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Marine Service & Oil Change Kits (Mercury Yamaha & Suzuki)
Service and Oil Change Kits
Shop marine service kits and oil change kits for scheduled maintenance, 100-hour service, annual service, and routine engine care. This category includes OEM parts and quality OEM specification aftermarket products from Pro Marine for Yamaha, Suzuki, Mercury, and Mercruiser applications.
Browse outboard and marine engine maintenance kits by brand and service type, including 4-stroke service kits, oil change kits, filters, spark plugs, drain gaskets, engine oil, and gear lube when applicable. Always review each kit listing for exact contents before ordering.
Shop Service and Oil Change Kit Categories
Suzuki 4 Stroke Service Kits 100-hour and annual Suzuki outboard service kits 
Suzuki Oil Change Kits Suzuki engine oil, filters, and oil service parts 
Mercury 4 Stroke Oil Change Kits Mercury 4-stroke oil change kits by horsepower range 
Mercury 4 Stroke Service Kits Mercury 100-hour and 300-hour maintenance kits 
Mercruiser 4 Stroke Oil Change Kits Mercruiser oil change kits and maintenance supplies 
Yamaha 4 Stroke Service Kits Yamaha 100-hour and annual outboard service kits 
Yamaha Oil Change Kits Yamaha engine oil, filters, and oil service kits Common Service Kit Items Found in This Category
- Engine oil and oil filters for routine 4-stroke maintenance
- Fuel filters, water separating filters, and related service parts
- Spark plugs for annual service and tune-up work
- Drain plug gaskets, O-rings, seals, and service washers
- Lower unit gear lube when included with the selected kit
- Thermostats, impeller-related parts, and cooling service items when applicable
- 100-hour, 300-hour, and annual service kits by engine model
Common Maintenance Problems and Where to Start
- Overdue annual service: start with the correct service kit for your engine brand, horsepower, and model range.
- Contaminated engine oil: use the correct oil change kit with the proper oil filter and drain gaskets.
- Milky or dark gear lube: inspect the lower unit and confirm whether your kit includes gear lube for service.
- Rough idle or hard starting: service spark plugs, fuel filters, and fuel system maintenance items.
- Unknown service history: perform a full 100-hour or annual service before troubleshooting deeper engine issues.
Frequently Asked Questions
What is the difference between a service kit and an oil change kit?
An oil change kit usually focuses on engine oil, the oil filter, and related drain gaskets. A service kit may include additional maintenance items such as fuel filters, spark plugs, seals, gaskets, gear lube when applicable, and other parts used during 100-hour or annual maintenance.
Do all service kits include gear lube?
No. Some kits include gear lube and some do not. Always check the individual kit description to confirm whether lower unit gear lube is included before ordering.
How do I find the correct service kit for my engine?
Start with your engine brand, horsepower, model number, serial number, and year range. Many kits are grouped by engine family or horsepower range, so confirming the exact engine information helps prevent ordering the wrong kit.
What is a 100-hour service kit?
A 100-hour service kit is designed to support routine scheduled maintenance commonly performed after 100 hours of operation or once per season. Contents vary by brand and engine model, but may include filters, spark plugs, gaskets, oil, and gear lube depending on the kit.
Are aftermarket service kits reliable?
Yes. Quality aftermarket service kits are commonly used by marine mechanics, boat owners, and rebuilders. Pro Marine provides quality OEM specification aftermarket products for marine maintenance, repair, and service applications.
Should I replace everything in the kit at once?
For scheduled maintenance, it is usually best to replace all included service items at the same interval. This helps create a known maintenance baseline and can prevent repeat service work later in the season.
Tip: Before ordering, compare your engine model and serial number to the kit listing and check whether the kit includes engine oil, gear lube, filters, spark plugs, and drain gaskets.
OEM Mercury 40-60HP 300 Hour Service Kit
Mercury 40-60HP 300 Hour Kit Standard Gearcase
The Mercury 8M0113483 300 Hour Service Kit is designed for compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with standard gearcases.
This 300 hour maintenance kit includes the routine service components commonly replaced during scheduled maintenance. Oil and gear lube are sold separately.
Compatible Applications
| Brand | Horsepower | Engine Type | Gearcase Type | Serial Range |
|---|---|---|---|---|
| Mercury | 40HP | FourStroke EFI Outboard | Standard Gearcase | 1C000001 & Higher |
| Mercury | 50HP | FourStroke EFI Outboard | Standard Gearcase | 1C000001 & Higher |
| Mercury | 60HP | FourStroke EFI Outboard | Standard Gearcase | 1C000001 & Higher |
This Mercury 300 hour service kit fits Mercury 40-60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with standard gearcases only.
If your engine has a BigFoot or Command Thrust gearcase, use the BigFoot / Command Thrust kits linked below instead.
What is Included
| Included Component | Application |
|---|---|
| Oil Filter | Engine oil filtration service |
| Fuel Filters | Fuel system maintenance |
| Spark Plugs | Ignition system maintenance |
| Water Pump Components | Cooling system service |
| Thermostat Components | Cooling system maintenance |
| Drain & Vent Seals | Gearcase service |
Prefer to Buy the Kit with 10W30 Oil & Gear Lube?
Mercury 300 Hour Kit With 10W30 Oil & Gear Lube
Prefer a complete maintenance package? Order the Mercury 8M0113483-L 300 Hour Service Kit with Mercury 10W30 engine oil and gear lube included.
View Complete KitOil Capacity & Recommended Oil Options
Mercury 40-60HP FourStroke EFI engines use approximately 4 quarts of engine oil, or 1 gallon.
| Oil Type | Product | Quantity Required |
|---|---|---|
| Mercury 10W30 | Mercury 10W30 Engine Oil - Quart | 4 quarts |
| Mercury 10W30 | Mercury 10W30 Engine Oil - Gallon | 1 gallon |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Quart | 4 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Gallon | 1 gallon |
| Mercury 10W30 Full Synthetic | Mercury 10W30 Full Synthetic - Gallon | 1 gallon |
| Mercury 25W40 | Mercury 25W40 Engine Oil - Quart | 4 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Quart | 4 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Gallon | 1 gallon |
Recommended Gear Lube
Gear Lube Quantity:
Standard gearcase applications use approximately
1 quart of gear lube.
| Gear Lube Type | Product |
|---|---|
| Mercury Premium Gear Lube 80W90 | Mercury Premium Gear Lube 80W90 - Quart |
| Mercury High Performance Gear Lube | Mercury High Performance Gear Lube - Quart |
BigFoot / Command Thrust 300 Hour Kits
300 Hour Kit - BigFoot / Command Thrust
Use this kit for Mercury 40-60HP EFI outboards with BigFoot or Command Thrust gearcases. Oil and gear lube sold separately.
View Product
300 Hour Kit With Oil - BigFoot / Command Thrust
Complete 300 hour maintenance kit with oil and gear lube for compatible BigFoot and Command Thrust gearcase models.
View ProductWhat This Service Kit is Used For
The Mercury 8M0113483 service kit is used for 300 hour maintenance on compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards equipped with standard gearcases.
A 300 hour service includes more extensive maintenance than a basic 100 hour service and helps support fuel system performance, cooling system reliability, ignition performance, lubrication service, and long-term outboard protection.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
- Fits serial numbers 1C000001 and higher
- For standard gearcase models only
- Oil and gear lube sold separately
- Kit with 10W30 oil and gear lube available separately
- BigFoot / Command Thrust kits linked above
Service Kit Details
- Part Number: 8M0113483
- Application: Mercury 40-60HP FourStroke EFI Outboards
- Serial Range: 1C000001 & Higher
- Gearcase Type: Standard Gearcase
- Service Interval: 300 Hour Maintenance
- Oil and Gear Lube: Sold Separately
FAQ
What engines does this kit fit?
This kit fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
with serial numbers 1C000001 and higher equipped with standard gearcases.
Does this fit BigFoot or Command Thrust gearcases?
No. BigFoot and Command Thrust kits are linked above.
Does this kit include oil and gear lube?
Oil and gear lube are sold separately.
Is there a version with 10W30 oil and gear lube included?
Yes. The Mercury 8M0113483-L kit with 10W30 oil and gear lube
is linked above.
How much engine oil does this motor use?
Approximately 4 quarts or 1 gallon.
How much gear lube is required?
Approximately 1 quart for standard gearcase models.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0113483, 8M0113483-L, 8M0090559, 8M0090559-L, Mercury 40HP 300 hour kit, Mercury 50HP 300 hour kit, Mercury 60HP 300 hour kit, Mercury standard gearcase 300 hour kit, Mercury 40-60HP standard gearcase maintenance, Mercury serial 1C000001 300 hour kit, Mercury 300 hour kit oil and gear lube sold separately, Mercury 300 hour kit with 10W30, Mercury BigFoot 300 hour kit, Mercury Command Thrust 300 hour kit, Mercury FourStroke EFI 300 hour service
OEM Mercury 40-60HP 300 Hour Service Kit With Oil
Mercury 40-60HP 300 Hour Kit BigFoot / Command Thrust
The Mercury 8M0090559-L 300 Hour Service Kit is a complete maintenance package for Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with BigFoot or Command Thrust gearcases.
This 300 hour maintenance kit includes the required service components along with engine oil and gear lube for routine scheduled maintenance.
Compatible Applications
| Brand | Horsepower | Engine Type | Gearcase Type | Serial Range |
|---|---|---|---|---|
| Mercury | 40HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
| Mercury | 50HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
| Mercury | 60HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
This Mercury 300 hour service kit fits Mercury 40-60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with BigFoot or Command Thrust gearcases only.
If your engine has a standard gearcase, use the standard gearcase 300 hour kits linked below instead.
What is Included
| Included Component | Application |
|---|---|
| Oil Filter | Engine oil filtration service |
| Fuel Filters | Fuel system maintenance |
| Spark Plugs | Ignition system maintenance |
| Water Pump Components | Cooling system service |
| Thermostat Components | Cooling system maintenance |
| Mercury Engine Oil | Engine oil service |
| Mercury Gear Lube | Gearcase lubricant service |
Prefer to Choose a Different Oil?
Some customers prefer to purchase their own Mercury oil separately, including Mercury 25W40, Synthetic Blend, or Full Synthetic options.
If you prefer to select your own engine oil and gear lube, order the standard 300 hour kit below.
Order 8M0090559 - Oil and Gear Lube Sold SeparatelyIncluded Oil & Gear Lube Information
This kit includes Mercury engine oil and gear lube for the complete 300 hour maintenance service.
Mercury 40-60HP FourStroke EFI engines use approximately 4 quarts of engine oil, or 1 gallon.
BigFoot and Command Thrust gearcases may require different gear lube fill amounts than standard gearcases. Always verify fill quantity in your Mercury owner's manual.
Standard Gearcase 300 Hour Kits
300 Hour Kit - Standard Gearcase
Use this kit for Mercury 40-60HP EFI outboards with standard gearcases. Oil and gear lube sold separately.
View Product
300 Hour Kit With Oil - Standard Gearcase
Complete 300 hour maintenance kit with oil and gear lube for compatible standard gearcase models.
View ProductWhat This Service Kit is Used For
The Mercury 8M0090559-L service kit is used for 300 hour maintenance on compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards equipped with BigFoot or Command Thrust gearcases.
A 300 hour maintenance service is more extensive than a standard 100 hour service and commonly includes fuel system maintenance, cooling system service, spark plug replacement, water pump service, oil service, and gearcase maintenance.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
- Fits serial numbers 1C000001 and higher
- For BigFoot and Command Thrust gearcase models
- Includes engine oil and gear lube
- Complete maintenance package for scheduled service
- Alternative kit available for customers preferring different oils
- Standard gearcase kits linked above
Service Kit Details
- Part Number: 8M0090559-L
- Base Kit: 8M0090559
- Application: Mercury 40-60HP FourStroke EFI Outboards
- Serial Range: 1C000001 & Higher
- Gearcase Type: BigFoot / Command Thrust
- Service Interval: 300 Hour Maintenance
- Oil Included: Yes
- Gear Lube Included: Yes
FAQ
What engines does this kit fit?
This kit fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
with serial numbers 1C000001 and higher equipped with BigFoot
or Command Thrust gearcases.
Does this fit standard gearcase models?
No. This kit is for BigFoot and Command Thrust gearcases only.
Standard gearcase kits are linked above.
Does this kit include oil and gear lube?
Yes. This kit includes Mercury engine oil and gear lube.
What if I prefer a different oil?
Customers who prefer different Mercury oil options can order
the standard 8M0090559 kit and select their preferred oil separately.
How do I know if I have a BigFoot or Command Thrust gearcase?
Verify your gearcase type using your Mercury model information
or owner's manual before ordering.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0090559-L, 8M0090559, 8M0113483, 8M0113483-L, Mercury 40HP 300 hour kit with oil, Mercury 50HP 300 hour kit with oil, Mercury 60HP 300 hour kit with oil, Mercury BigFoot 300 hour service kit, Mercury Command Thrust 300 hour kit, Mercury 40-60HP BigFoot maintenance kit, Mercury 40-60HP Command Thrust maintenance kit, Mercury serial 1C000001 300 hour service, Mercury standard gearcase 300 hour kit, Mercury 300 hour kit with oil and gear lube, Mercury FourStroke EFI 300 hour service
OEM Mercury 300-Hour Service Kit with Oil & Gear Lube
Mercury 8M0149931-L Service Kit for 4.6L V8 CMS SeaPro & ProXS Outboards
The Mercury 8M0149931-L 300-Hour Service Kit is an OEM maintenance kit for Mercury 4.6L V8 CMS (Conventional Mid Section) SeaPro and ProXS 4-stroke outboards.
This complete version includes the major 300-hour service replacement items, plus Mercury 10W30 engine oil and Mercury gear lube for a more complete maintenance package.
Compatible Applications
| Engine Family | Horsepower / Type | Midsection | Application Notes |
|---|---|---|---|
| Mercury SeaPro | 4.6L V8 FourStroke | CMS / Conventional Mid Section | Fits compatible Mercury V8 CMS SeaPro outboards |
| Mercury ProXS | 4.6L V8 FourStroke | CMS / Conventional Mid Section | Fits compatible Mercury V8 CMS ProXS outboards |
CMS stands for Conventional Mid Section. Always verify your engine model, serial number, and owner’s manual before ordering service kits or maintenance parts.
What is Included
- OEM Mercury oil filter
- OEM Mercury fuel filter
- Oil drain seal
- Spark plugs
- Thermostat
- Alternator belt
- Water pump repair kit
- Anodes
- Mercury 10W30 engine oil
- Mercury gear lube
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| Mercury OEM | 8M0149931-L |
| Related Kit Without Oil | 8M0149931 |
| Application | 300-Hour V8 CMS Service Kit with Oil & Gear Lube |
Prefer to Choose Your Own Oil?
This kit includes Mercury 10W30 engine oil and gear lube. Some customers prefer to choose a different Mercury oil viscosity or purchase fluids separately.
If you want the same 300-hour kit without oil and gear lube, see:
Related Anode Kit
This V8 CMS application uses the Mercury CMS aluminum anode kit. If you are replacing anodes separately or want a complete corrosion protection kit, see:
Mercury 8M0205953 Aluminum Anode Kit for CMS V6 / V8 Outboards
What This Service Kit is Used For
This Mercury 300-hour service kit is used for scheduled maintenance on compatible V8 CMS SeaPro and ProXS 4-stroke outboards.
Periodic maintenance helps protect your investment, support reliable operation, and keep your engine running longer and stronger.
Mercury packages the required 300-hour service replacement items together so customers do not have to order each part separately.
Key Features and Benefits
- Genuine OEM Mercury 300-hour maintenance kit
- Fits Mercury 4.6L V8 CMS SeaPro and ProXS 4-stroke outboards
- Includes oil filter, fuel filter, and oil drain seal
- Includes spark plugs, thermostat, and alternator belt
- Includes water pump repair kit and anodes
- Includes Mercury 10W30 engine oil and gear lube
- Convenient all-in-one maintenance package
- Produced to Mercury OEM specifications
Service Kit Details
- Brand: Mercury / Quicksilver
- Part Number: 8M0149931-L
- Part Type: 300-Hour Service Kit with Oil & Gear Lube
- Application: Mercury 4.6L V8 CMS SeaPro and ProXS FourStroke Outboards
- Midsection: CMS / Conventional Mid Section
- Includes Oil: Yes
- Includes Gear Lube: Yes
- Quantity Sold: Kit
FAQ
What engines does Mercury 8M0149931-L fit?
This kit fits Mercury 4.6L V8 CMS SeaPro and ProXS 4-stroke outboards.
Does this kit include engine oil?
Yes. This version includes Mercury 10W30 engine oil.
Does this kit include gear lube?
Yes. This version includes Mercury gear lube.
What parts are included in this 300-hour kit?
The kit includes an oil filter, fuel filter, oil drain seal, spark plugs,
thermostat, alternator belt, water pump repair kit, anodes, engine oil,
and gear lube.
Is there a version without oil?
Yes. Mercury 8M0149931 includes the same 300-hour service parts without
engine oil and gear lube.
Which anode kit goes with this engine?
This CMS application uses Mercury aluminum anode kit 8M0205953.
Is this an OEM Mercury kit?
Yes. This is a genuine Mercury / Quicksilver service kit produced to
Mercury OEM specifications.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Service kits should be verified for correct fitment before installation.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0149931-L, Mercury 300 hour service kit with oil, Mercury V8 CMS service kit, Mercury 4.6L V8 service kit, Mercury SeaPro 300 hour kit with oil, Mercury ProXS 300 hour kit with oil, Mercury CMS maintenance kit, Mercury oil filter fuel filter kit, Mercury spark plug service kit, Mercury water pump repair kit, Mercury thermostat service kit, Mercury alternator belt kit, Mercury anode service kit, Mercury 10W30 oil kit, Mercury gear lube kit, 8M0149931, 8M0205953
OEM Mercury 75-115HP 1.7L 300 Hour Service Kit
Mercury 75-115HP 1.7L FourStroke 300 Hour Kit - Serial 1B366823-2B094995
The Mercury 8M0097857 300 hour service kit is designed for Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
This OEM Mercury maintenance kit includes the major components commonly replaced during scheduled 300 hour maintenance intervals. This version does not include engine oil or gear lube.
Compatible Applications
| Brand | Horsepower | Engine Type | Serial Range |
|---|---|---|---|
| Mercury | 75HP, 90HP, 115HP | 1.7L FourStroke Outboard | 1B366823-2B094995 |
This 300 hour service kit is for Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
Always verify your engine serial number before ordering maintenance parts.
What is Included
| Included Component | Application |
|---|---|
| Oil Filter | Engine oil filtration service |
| Fuel Filter | Fuel system maintenance |
| Gearcase Drain Seals | Gearcase lubricant service |
| Spark Plugs (4) | Ignition system maintenance |
| Thermostat Kit | Cooling system maintenance |
| Water Pump Impeller Kit | Water pump service |
| Alternator Belt | Charging system maintenance |
| Anodes | Corrosion protection |
Oil Capacity & Recommended Oil Options
These Mercury 75-115HP 1.7L engines use approximately 6 quarts of engine oil, or 1 gallon plus 2 quarts.
This kit does not include engine oil.
| Oil Type | Product | Quantity Required |
|---|---|---|
| Mercury 10W30 | Mercury 10W30 Engine Oil - Quart | 6 quarts |
| Mercury 10W30 | Mercury 10W30 Engine Oil - Gallon | 1 gallon + 2 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Quart | 6 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Gallon | 1 gallon + 2 quarts |
| Mercury 10W30 Full Synthetic | Mercury 10W30 Full Synthetic - Gallon | 1 gallon + 2 quarts |
| Mercury 25W40 | Mercury 25W40 Engine Oil - Quart | 6 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Quart | 6 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Gallon | 1 gallon + 2 quarts |
Gear Lube Recommendations
This service requires approximately 1 quart of gear lube.
This kit does not include gear lube.
| Gear Lube Type | Product | Quantity Required |
|---|---|---|
| Mercury Premium Gear Lube 80W90 | Mercury Premium Gear Lube - Quart | 1 quart |
| Mercury High Performance Gear Lube | Mercury High Performance Gear Lube - Quart | 1 quart |
Want the Complete Kit With Oil & Gear Lube?
300 Hour Kit With 10W30 Oil & Gear Lube
The complete Mercury 8M0097857-L service kit includes 10W30 engine oil and gear lube along with the major 300 hour maintenance components.
View Kit With Oil & Gear LubeWhat This Service Kit is Used For
The Mercury 8M0097857 service kit is used for major 300 hour maintenance on compatible Mercury 75-115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
This maintenance interval commonly includes ignition system maintenance, cooling system service, water pump service, fuel filtration, corrosion protection, and gearcase service.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards
- For serial numbers 1B366823 through 2B094995
- Includes spark plugs, thermostat kit, impeller kit, alternator belt, and anodes
- Includes all parts Mercury recommends for scheduled 300 hour service
- Produced to Mercury Marine OEM specifications
- Does not include oil or gear lube
- Allows customers to choose preferred Mercury oil options separately
Service Kit Details
- Part Number: 8M0097857
- Application: Mercury 75-115HP 1.7L FourStroke Outboards
- Serial Range: 1B366823-2B094995
- Service Interval: 300 Hour Maintenance
- Oil Included: No
- Gear Lube Included: No
- Oil Capacity: Approximately 6 quarts, or 1 gallon plus 2 quarts
- Gear Lube Quantity: Approximately 1 quart
FAQ
What engines does this service kit fit?
This kit fits Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
Does this kit include engine oil?
No. Engine oil is sold separately.
Does this kit include gear lube?
No. Gear lube is sold separately.
What maintenance items are included?
This kit includes an oil filter, fuel filter, gearcase drain seals, spark plugs,
thermostat kit, water impeller kit, alternator belt, and anodes.
How much oil does the engine use?
Approximately 6 quarts, or 1 gallon plus 2 quarts.
Is there a version with oil and gear lube included?
Yes. The Mercury 8M0097857-L kit with 10W30 oil and gear lube is linked above.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0097857, Mercury 75HP 300 hour service kit, Mercury 90HP 300 hour service kit, Mercury 115HP 300 hour service kit, Mercury 1.7L FourStroke maintenance kit, Mercury serial 1B366823, Mercury serial 2B094995, Mercury spark plug kit, Mercury thermostat kit, Mercury impeller kit, Mercury alternator belt, Mercury anodes, Mercury 10W30 oil, Mercury 25W40 oil, Mercury Premium Gear Lube, Mercury High Performance Gear Lube, 8M0097857-L
OEM Mercury 150HP EFI 300 Hour Service Kit With 10W30 Oil & Gear Lube
Mercury 150HP FourStroke EFI 300 Hour Kit - Serial 1B905505-Present
The Mercury 8M0094233-L 300 hour service kit is designed for Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
This complete OEM Mercury maintenance kit includes the major components commonly replaced during scheduled 300 hour service intervals along with Mercury 10W30 engine oil and Mercury gear lube.
Compatible Applications
| Brand | Horsepower | Engine Type | Serial Range |
|---|---|---|---|
| Mercury | 150HP | FourStroke EFI Outboard | 1B905505 & Higher |
This 300 hour service kit is for Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
Always verify your engine serial number before ordering maintenance parts.
What is Included
| Included Component | Application |
|---|---|
| Oil Filter | Engine oil filtration service |
| Fuel Filters | Fuel system maintenance |
| Gearcase Drain Seals | Gearcase lubricant service |
| Spark Plugs (4) | Ignition system maintenance |
| Thermostat Kit | Cooling system maintenance |
| Water Pump Impeller Kit | Water pump service |
| Alternator Belt | Charging system maintenance |
| Anodes | Corrosion protection |
| Mercury 10W30 Engine Oil | 1 gallon plus 3 quarts included |
| Mercury Gear Lube | Gearcase lubricant included |
Oil & Gear Lube Included
Engine oil included: Mercury 10W30 engine oil - 1 gallon plus 3 quarts.
Gear lube included: Mercury gear lube for gearcase service.
Want to Use a Different Oil?
300 Hour Kit Without Oil
Some customers prefer using a different oil viscosity, synthetic blend, full synthetic oil, or already have oil and gear lube available. The standard Mercury 8M0094233 300 hour service kit without oil or gear lube is available separately.
View Kit Without OilWhat This Service Kit is Used For
The Mercury 8M0094233-L service kit is used for major 300 hour maintenance on compatible Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
This service interval commonly includes ignition system maintenance, cooling system service, water pump service, corrosion protection, fuel filtration, and engine oil service.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 150HP FourStroke EFI outboards
- For serial numbers 1B905505 and higher
- Includes spark plugs, thermostat kit, impeller kit, and anodes
- Premium Mercury oil and fuel filters
- Heavy-duty corrosion-resistant filter housings
- Includes Mercury 10W30 engine oil
- Includes Mercury gear lube
- Convenient all-in-one maintenance package
Service Kit Details
- Part Number: 8M0094233-L
- Base Mercury Kit Number: 8M0094233
- Application: Mercury 150HP FourStroke EFI Outboards
- Serial Range: 1B905505 & Higher
- Service Interval: 300 Hour Maintenance
- Oil Included: Yes - Mercury 10W30
- Oil Quantity Included: 1 gallon plus 3 quarts
- Gear Lube Included: Yes
- Included Components: Oil filter, fuel filters, gearcase drain seals, spark plugs, thermostat kit, water impeller kit, alternator belt, anodes, 10W30 oil, gear lube
FAQ
What engines does this service kit fit?
This kit fits Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
Does this kit include engine oil?
Yes. This version includes Mercury 10W30 engine oil.
How much oil is included?
This kit includes 1 gallon plus 3 quarts of Mercury 10W30 engine oil.
Does this kit include gear lube?
Yes. Mercury gear lube is included for the gearcase service.
Is there a version without oil and gear lube?
Yes. The Mercury 8M0094233 service kit without oil is linked above.
What maintenance items are included?
This kit includes oil and fuel filters, spark plugs, thermostat kit,
impeller kit, alternator belt, anodes, gearcase seals, oil, and gear lube.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0094233-L, 8M0094233, Mercury 150HP 300 hour kit with oil, Mercury 150HP EFI maintenance kit, Mercury FourStroke service kit, Mercury 150HP serial 1B905505, Mercury thermostat kit, Mercury impeller kit, Mercury spark plugs, Mercury alternator belt, Mercury anode kit, Mercury 10W30 oil, Mercury gear lube, Mercury EFI 300 hour maintenance
OEM Mercury 40-60HP 300 Hour Service Kit
Mercury 40-60HP 300 Hour Kit BigFoot / Command Thrust
The Mercury 8M0090559 300 Hour Service Kit is for compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with BigFoot or Command Thrust gearcases.
This 300 hour maintenance kit includes the service components commonly replaced during extended scheduled maintenance. Oil and gear lube are sold separately.
Compatible Applications
| Brand | Horsepower | Engine Type | Gearcase Type | Serial Range |
|---|---|---|---|---|
| Mercury | 40HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
| Mercury | 50HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
| Mercury | 60HP | FourStroke EFI Outboard | BigFoot / Command Thrust | 1C000001 & Higher |
This Mercury 300 hour service kit fits Mercury 40-60HP FourStroke EFI outboards with serial numbers 1C000001 and higher and BigFoot or Command Thrust gearcases only.
If your motor has a standard gearcase, use the standard gearcase 300 hour kit linked below instead.
Prefer to Buy the Kit with Oil & Gear Lube?
Mercury 300 Hour Kit With Oil & Gear Lube - BigFoot / Command Thrust
Prefer a complete maintenance package? Order the Mercury 8M0090559-L 300 Hour Service Kit with engine oil and gear lube included.
View Complete KitOil Capacity & Recommended Oil Options
Mercury 40-60HP FourStroke EFI engines use approximately 4 quarts of engine oil, or 1 gallon.
| Oil Type | Product | Quantity Required |
|---|---|---|
| Mercury 10W30 | Mercury 10W30 Engine Oil - Quart | 4 quarts |
| Mercury 10W30 | Mercury 10W30 Engine Oil - Gallon | 1 gallon |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Quart | 4 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Gallon | 1 gallon |
| Mercury 10W30 Full Synthetic | Mercury 10W30 Full Synthetic - Gallon | 1 gallon |
| Mercury 25W40 | Mercury 25W40 Engine Oil - Quart | 4 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Quart | 4 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Gallon | 1 gallon |
Recommended Gear Lube
Gear Lube Quantity:
BigFoot and Command Thrust gearcases may require more gear lube than standard gearcases.
Always verify the fill quantity in your Mercury owner's manual before servicing.
| Gear Lube Type | Product |
|---|---|
| Mercury High Performance Gear Lube | Mercury High Performance Gear Lube - Quart |
| Mercury Premium Gear Lube 80W90 | Mercury Premium Gear Lube 80W90 - Quart |
Standard Gearcase 300 Hour Kits
300 Hour Kit - Standard Gearcase
Use this 300 hour kit for compatible Mercury 40-60HP EFI models with standard gearcases. Oil and gear lube sold separately.
View Product
300 Hour Kit With Oil - Standard Gearcase
Complete 300 hour kit with 10W30 oil and gear lube for compatible standard gearcase models.
View ProductWhat This Service Kit is Used For
The Mercury 8M0090559 service kit is used for 300 hour maintenance on compatible Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards with serial numbers 1C000001 and higher equipped with BigFoot or Command Thrust gearcases.
A 300 hour service is a more complete maintenance interval than a basic 100 hour service and helps support fuel system performance, cooling system reliability, ignition performance, lubrication service, and long-term outboard protection.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
- For serial numbers 1C000001 and higher
- For BigFoot and Command Thrust gearcase models
- Oil and gear lube sold separately
- Kit with oil and gear lube available separately
- Standard gearcase 300 hour kits linked above
Service Kit Details
- Part Number: 8M0090559
- Application: Mercury 40-60HP FourStroke EFI Outboards
- Serial Range: 1C000001 & Higher
- Gearcase Type: BigFoot / Command Thrust
- Service Interval: 300 Hour Maintenance
- Oil and Gear Lube: Sold Separately
FAQ
What engines does this 300 hour kit fit?
This kit fits Mercury 40HP, 50HP, and 60HP FourStroke EFI outboards
with serial numbers 1C000001 and higher equipped with BigFoot or
Command Thrust gearcases.
Does this kit fit standard gearcase models?
No. This kit is for BigFoot and Command Thrust gearcase models.
Standard gearcase 300 hour kits are linked above.
Does this kit include oil and gear lube?
Oil and gear lube are sold separately.
Is there a version with oil and gear lube included?
Yes. The Mercury 8M0090559-L kit with oil and gear lube is linked above.
How do I know which 300 hour kit to order?
Choose this kit for BigFoot or Command Thrust gearcases. Choose the
standard gearcase kit if your motor does not have a BigFoot or Command
Thrust gearcase.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0090559, 8M0090559-L, 8M0113483, 8M0113483-L, Mercury 40HP 300 hour kit, Mercury 50HP 300 hour kit, Mercury 60HP 300 hour kit, Mercury 40-60HP 300 hour service kit, Mercury BigFoot 300 hour kit, Mercury Command Thrust 300 hour kit, Mercury 40-60HP BigFoot service kit, Mercury 40-60HP Command Thrust service kit, Mercury serial 1C000001 300 hour kit, Mercury 1C000001 and higher maintenance kit, Mercury standard gearcase 300 hour kit, Mercury 300 hour kit oil and gear lube sold separately
OEM Mercury 75-115HP 1.7L 300 Hour Service Kit With Oil & Gear Lube
Mercury 75-115HP 1.7L FourStroke 300 Hour Kit - Serial 1B366823-2B094995
The Mercury 8M0097857-L 300 hour service kit is designed for Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
This OEM Mercury maintenance kit includes the major components commonly replaced during scheduled 300 hour maintenance intervals along with Mercury 10W30 engine oil and Mercury gear lube.
Compatible Applications
| Brand | Horsepower | Engine Type | Serial Range |
|---|---|---|---|
| Mercury | 75HP, 90HP, 115HP | 1.7L FourStroke Outboard | 1B366823-2B094995 |
This 300 hour service kit is for Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
Always verify your engine serial number before ordering maintenance parts.
What is Included
| Included Component | Application |
|---|---|
| Oil Filter | Engine oil filtration service |
| Fuel Filter | Fuel system maintenance |
| Gearcase Drain Seals | Gearcase lubricant service |
| Spark Plugs (4) | Ignition system maintenance |
| Thermostat Kit | Cooling system maintenance |
| Water Pump Impeller Kit | Water pump service |
| Alternator Belt | Charging system maintenance |
| Anodes | Corrosion protection |
| Mercury 10W30 Engine Oil | 1 gallon plus 2 quarts included |
| Mercury Gear Lube | Gearcase lubricant included |
Oil & Gear Lube Included
Engine oil included: Mercury 10W30 engine oil - 1 gallon plus 2 quarts.
Gear lube included: Mercury gear lube for gearcase service.
Want to Use a Different Oil?
300 Hour Kit Without Oil & Gear Lube
Some customers prefer using a different oil viscosity, synthetic blend, full synthetic oil, or already have oil and gear lube available. The standard Mercury 8M0097857 300 hour service kit without oil or gear lube is available separately.
View Kit Without OilWhat This Service Kit is Used For
The Mercury 8M0097857-L service kit is used for major 300 hour maintenance on compatible Mercury 75-115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
This maintenance interval commonly includes ignition system maintenance, cooling system service, water pump service, fuel filtration, corrosion protection, engine oil service, and gearcase lubricant replacement.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards
- For serial numbers 1B366823 through 2B094995
- Includes spark plugs, thermostat kit, impeller kit, alternator belt, and anodes
- Includes all parts Mercury recommends for scheduled 300 hour service
- Includes Mercury 10W30 engine oil
- Includes Mercury gear lube
- Convenient all-in-one maintenance package
Service Kit Details
- Part Number: 8M0097857-L
- Base Mercury Kit Number: 8M0097857
- Application: Mercury 75-115HP 1.7L FourStroke Outboards
- Serial Range: 1B366823-2B094995
- Service Interval: 300 Hour Maintenance
- Oil Included: Yes - Mercury 10W30
- Oil Quantity Included: 1 gallon plus 2 quarts
- Gear Lube Included: Yes
FAQ
What engines does this service kit fit?
This kit fits Mercury 75HP, 90HP, and 115HP 1.7L FourStroke outboards with serial numbers 1B366823 through 2B094995.
Does this kit include engine oil?
Yes. This version includes Mercury 10W30 engine oil.
How much oil is included?
This kit includes 1 gallon plus 2 quarts of Mercury 10W30 engine oil.
Does this kit include gear lube?
Yes. Mercury gear lube is included for the gearcase service.
Is there a version without oil and gear lube?
Yes. The Mercury 8M0097857 service kit without oil and gear lube is linked above.
What maintenance items are included?
This kit includes an oil filter, fuel filter, gearcase drain seals,
spark plugs, thermostat kit, water pump impeller kit,
alternator belt, anodes, engine oil, and gear lube.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0097857-L, 8M0097857, Mercury 75HP 300 hour service kit, Mercury 90HP 300 hour service kit, Mercury 115HP 300 hour service kit, Mercury 1.7L FourStroke maintenance kit, Mercury serial 1B366823, Mercury serial 2B094995, Mercury spark plug kit, Mercury thermostat kit, Mercury impeller kit, Mercury alternator belt, Mercury anodes, Mercury 10W30 oil, Mercury gear lube, Mercury Premium Gear Lube, Mercury High Performance Gear Lube
OEM Mercury 150HP EFI 300 Hour Service Kit
Mercury 150HP FourStroke EFI 300 Hour Kit - Serial 1B905505-Present
The Mercury 8M0094233 300 hour service kit is designed for Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
This complete OEM Mercury maintenance kit includes the major components commonly replaced during scheduled 300 hour service intervals. This version does not include engine oil or gear lube.
Compatible Applications
| Brand | Horsepower | Engine Type | Serial Range |
|---|---|---|---|
| Mercury | 150HP | FourStroke EFI Outboard | 1B905505 & Higher |
This service kit is designed for Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
Always verify your engine serial number before ordering maintenance parts.
What is Included
| Included Component | Application |
|---|---|
| Oil Filter | Engine oil filtration service |
| Fuel Filters | Fuel system maintenance |
| Gearcase Drain Seals | Gearcase lubricant service |
| Spark Plugs (4) | Ignition system maintenance |
| Thermostat Kit | Cooling system maintenance |
| Water Pump Impeller Kit | Water pump service |
| Alternator Belt | Charging system maintenance |
| Anodes | Corrosion protection |
Oil Capacity & Recommended Oil Options
This Mercury 150HP EFI engine uses approximately 7 quarts of engine oil, or 1 gallon plus 3 quarts.
This kit does not include engine oil.
| Oil Type | Product | Quantity Required |
|---|---|---|
| Mercury 10W30 | Mercury 10W30 Engine Oil - Quart | 7 quarts |
| Mercury 10W30 | Mercury 10W30 Engine Oil - Gallon | 1 gallon + 3 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Quart | 7 quarts |
| Mercury 10W30 Synthetic Blend | Mercury 10W30 Synthetic Blend - Gallon | 1 gallon + 3 quarts |
| Mercury 10W30 Full Synthetic | Mercury 10W30 Full Synthetic - Gallon | 1 gallon + 3 quarts |
| Mercury 25W40 | Mercury 25W40 Engine Oil - Quart | 7 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Quart | 7 quarts |
| Mercury 25W40 Synthetic Blend | Mercury 25W40 Synthetic Blend - Gallon | 1 gallon + 3 quarts |
Gear Lube Recommendations
This service requires approximately 1 quart of gear lube.
Mercury High Performance Gear Lube and Mercury Premium Gear Lube are both compatible options depending on your application and operating conditions.
| Gear Lube Type | Product | Quantity Required |
|---|---|---|
| Mercury High Performance Gear Lube | Mercury High Performance Gear Lube - Quart | 1 quart |
| Mercury Premium Gear Lube 80W90 | Mercury Premium Gear Lube - Quart | 1 quart |
Complete Your Service
300 Hour Kit With Oil & Gear Lube
Complete Mercury 300 hour kit with 10W30 oil and gear lube included.
View Product
Mercury Aluminum Anode Kit
OEM Mercury aluminum anode kit for corrosion protection on compatible 150HP EFI outboards.
View ProductWhat This Service Kit is Used For
The Mercury 8M0094233 service kit is used for major 300 hour maintenance on compatible Mercury 150HP FourStroke EFI outboards.
This service interval typically includes ignition system maintenance, cooling system service, water pump service, corrosion protection, oil filtration, and fuel system maintenance.
Key Features and Benefits
- OEM Mercury 300 hour service kit
- Fits Mercury 150HP FourStroke EFI outboards
- For serial numbers 1B905505 and higher
- Includes spark plugs, thermostat kit, impeller kit, and anodes
- Premium Mercury oil and fuel filters
- Heavy-duty corrosion-resistant filter housings
- Does not include oil or gear lube
- Compatible with Mercury 10W30 and 25W40 oils
Service Kit Details
- Part Number: 8M0094233
- Application: Mercury 150HP FourStroke EFI Outboards
- Serial Range: 1B905505 & Higher
- Service Interval: 300 Hour Maintenance
- Oil Included: No
- Gear Lube Included: No
- Oil Capacity: Approximately 7 quarts
- Gear Lube Capacity: Approximately 1 quart
FAQ
What engines does this service kit fit?
This kit fits Mercury 150HP FourStroke EFI outboards with serial numbers 1B905505 and higher.
Does this kit include engine oil?
No. Engine oil is sold separately.
Does this kit include gear lube?
No. Gear lube is sold separately.
How much engine oil does this engine use?
Approximately 7 quarts, or 1 gallon plus 3 quarts.
How much gear lube is required?
Approximately 1 quart of gear lube is required.
Is there a version with oil and gear lube included?
Yes. The Mercury 8M0094233-L service kit includes 10W30 oil and gear lube.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Maintenance kits must be new, unused, and in original packaging.
- Opened oil and lubricants may not be returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0094233, Mercury 150HP 300 hour kit, Mercury 150HP EFI service kit, Mercury FourStroke maintenance kit, Mercury 150HP serial 1B905505, Mercury spark plug kit, Mercury thermostat kit, Mercury impeller kit, Mercury alternator belt, Mercury anode kit, Mercury Premium Gear Lube, Mercury High Performance Gear Lube, 8M0094233-L, 8M0107549
OEM Mercury 300-Hour Service Kit Without Oil
Mercury 8M0149931 Service Kit for 4.6L V8 CMS SeaPro & ProXS Outboards
The Mercury 8M0149931 300-Hour Service Kit is an OEM maintenance kit for Mercury 4.6L V8 CMS (Conventional Mid Section) SeaPro and ProXS 4-stroke outboards.
This kit includes the major 300-hour service replacement items in one box, including the oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, water pump repair kit, and anodes. Engine oil and gear lube are sold separately.
Compatible Applications
| Engine Family | Horsepower / Type | Midsection | Application Notes |
|---|---|---|---|
| Mercury SeaPro | 4.6L V8 FourStroke | CMS / Conventional Mid Section | Fits compatible Mercury V8 CMS SeaPro outboards |
| Mercury ProXS | 4.6L V8 FourStroke | CMS / Conventional Mid Section | Fits compatible Mercury V8 CMS ProXS outboards |
CMS stands for Conventional Mid Section. Always verify your engine model, serial number, and owner’s manual before ordering service kits or maintenance parts.
What is Included
- OEM Mercury oil filter
- OEM Mercury fuel filter
- Oil drain seal
- Spark plugs
- Thermostat
- Alternator belt
- Water pump repair kit
- Anodes
What is Not Included
- Engine oil is sold separately
- Gear lube is sold separately
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| Mercury OEM | 8M0149931 |
| Related Kit With 10W30 Oil | 8M0149931-L |
| Application | 300-Hour V8 CMS Service Kit Without Oil |
Want the Kit With 10W30 Oil?
Some customers prefer the convenience of ordering the 300-hour kit with Mercury 10W30 engine oil included.
If you want the complete kit with 10W30 oil, see:
Related Anode Kit
This V8 CMS application uses the Mercury CMS aluminum anode kit. If you are replacing anodes separately or want a complete corrosion protection kit, see:
Mercury 8M0205953 Aluminum Anode Kit for CMS V6 / V8 Outboards
Choose Your Engine Oil & Gear Lube
This service kit does not include oil or gear lube, allowing customers to choose their preferred Mercury oil option.
Most applications use either 1 gallon plus 3 quarts or 7 individual quarts of engine oil, plus 1 quart of Mercury gear lube. Always verify fluid capacity in your owner’s manual.
| Oil Type | Size | Part Number | Link |
|---|---|---|---|
| Mercury FC-W 10W30 | 1 Quart | 858045K01 | View Product |
| Mercury FC-W 10W30 | 1 Gallon | 8M0078626 | View Product |
| Mercury 10W30 Synthetic Blend | 1 Quart | 8M0142141 | View Product |
| Mercury 10W30 Synthetic Blend | 1 Gallon | 8M0142151 | View Product |
| Mercury 25W40 | 1 Quart | 858048K01 | View Product |
| Mercury 25W40 Synthetic Blend | 1 Quart | 858055K01 | View Product |
| Mercury 25W40 Synthetic Blend | 1 Gallon | 8M0078630 | View Product |
| Mercury High Performance Gear Lube | 1 Quart | 858064K01 | View Product |
What This Service Kit is Used For
This Mercury 300-hour service kit is used for scheduled maintenance on compatible V8 CMS SeaPro and ProXS 4-stroke outboards.
Periodic maintenance helps protect your investment, support reliable operation, and keep your engine running longer and stronger.
Mercury packages the required 300-hour service replacement items together so customers do not have to order each part separately.
Key Features and Benefits
- Genuine OEM Mercury 300-hour maintenance kit
- Fits Mercury 4.6L V8 CMS SeaPro and ProXS 4-stroke outboards
- Includes oil filter, fuel filter, and oil drain seal
- Includes spark plugs, thermostat, and alternator belt
- Includes water pump repair kit and anodes
- Engine oil and gear lube sold separately
- Convenient all-in-one maintenance parts package
- Produced to Mercury OEM specifications
Service Kit Details
- Brand: Mercury / Quicksilver
- Part Number: 8M0149931
- Part Type: 300-Hour Service Kit Without Oil
- Application: Mercury 4.6L V8 CMS SeaPro and ProXS FourStroke Outboards
- Midsection: CMS / Conventional Mid Section
- Includes Oil: No
- Includes Gear Lube: No
- Quantity Sold: Kit
FAQ
What engines does Mercury 8M0149931 fit?
This kit fits Mercury 4.6L V8 CMS SeaPro and ProXS 4-stroke outboards.
Does this kit include engine oil?
No. This version does not include engine oil.
Does this kit include gear lube?
No. Gear lube is sold separately.
What parts are included in this 300-hour kit?
The kit includes an oil filter, fuel filter, oil drain seal, spark plugs,
thermostat, alternator belt, water pump repair kit, and anodes.
Is there a version with oil included?
Yes. Mercury 8M0149931-L includes the same 300-hour service kit with
10W30 engine oil.
Which anode kit goes with this engine?
This CMS application uses Mercury aluminum anode kit 8M0205953.
Is this an OEM Mercury kit?
Yes. This is a genuine Mercury / Quicksilver service kit produced to
Mercury OEM specifications.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Service kits should be verified for correct fitment before installation.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0149931, Mercury 300 hour service kit, Mercury V8 CMS service kit, Mercury 4.6L V8 service kit, Mercury SeaPro 300 hour kit, Mercury ProXS 300 hour kit, Mercury CMS maintenance kit, Mercury oil filter fuel filter kit, Mercury spark plug service kit, Mercury water pump repair kit, Mercury thermostat service kit, Mercury alternator belt kit, Mercury anode service kit, 8M0149931-L, 8M0205953, 858045K01, 8M0078626, 8M0142141, 8M0142151, 858048K01, 858055K01, 8M0078630, 858064K01
OEM Mercury 300-Hour V6 Service Kit Without Oil
Mercury 8M0149930 Service Kit for 3.4L V6 FourStroke Outboards
The Mercury 8M0149930 300-Hour Service Kit is designed for Mercury 3.4L V6 FourStroke outboards.
This OEM Mercury maintenance package includes the major 300-hour service replacement components in one convenient box including the oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, anodes, and water pump repair kit. Engine oil and gear lube are sold separately.
Compatible Applications
| Engine Family | Engine Size | Engine Type | Application Notes |
|---|---|---|---|
| Mercury FourStroke | 3.4L V6 | FourStroke Outboards | Fits compatible Mercury 3.4L V6 FourStroke outboards |
Always verify your exact engine model and serial number before ordering maintenance kits or replacement service parts.
What is Included
- OEM Mercury oil filter
- OEM Mercury fuel filter
- Oil drain seal
- Spark plugs
- Thermostat
- Alternator belt
- Anodes
- Water pump repair kit
What is Not Included
- Engine oil is sold separately
- Gear lube is sold separately
OEM Part Numbers & Cross References
| Brand / Type | Part Number |
|---|---|
| Mercury OEM | 8M0149930 |
| Related Kit With Oil | 8M0149930-L |
| Application | 300-Hour V6 Service Kit Without Oil |
Want the Kit With Oil & Gear Lube?
Some customers prefer the convenience of receiving the complete 300-hour service kit with Mercury 10W30 engine oil and gear lube included.
If you want the complete version with oil and gear lube, see:
Related Anode Kit
Mercury 3.4L V6 FourStroke outboards use the Mercury aluminum anode kit shown below.
For replacement aluminum anodes, see:
Mercury 8M0205955 Aluminum Anode Kit
Choose Your Engine Oil & Gear Lube
This service kit does not include engine oil or gear lube, allowing customers to choose their preferred Mercury oil option.
Most applications use either 1 gallon plus 3 quarts or 7 individual quarts of engine oil, plus 1 quart of Mercury gear lube. Always verify fluid capacity in your owner’s manual.
| Oil Type | Size | Part Number | Link |
|---|---|---|---|
| Mercury FC-W 10W30 | 1 Quart | 858045K01 | View Product |
| Mercury FC-W 10W30 | 1 Gallon | 8M0078626 | View Product |
| Mercury 10W30 Synthetic Blend | 1 Quart | 8M0142141 | View Product |
| Mercury 10W30 Synthetic Blend | 1 Gallon | 8M0142151 | View Product |
| Mercury 25W40 | 1 Quart | 858048K01 | View Product |
| Mercury 25W40 Synthetic Blend | 1 Quart | 858055K01 | View Product |
| Mercury 25W40 Synthetic Blend | 1 Gallon | 8M0078630 | View Product |
| Mercury High Performance Gear Lube | 1 Quart | 858064K01 | View Product |
What This Service Kit is Used For
This Mercury 300-hour maintenance kit is designed for scheduled service on compatible Mercury 3.4L V6 FourStroke outboards.
Regular maintenance helps support long-term reliability, cooling system performance, fuel system operation, and corrosion protection.
Mercury packages the required 300-hour service components together to simplify maintenance and reduce the need to source parts individually.
Key Features and Benefits
- Genuine OEM Mercury 300-hour maintenance kit
- Fits Mercury 3.4L V6 FourStroke outboards
- Includes oil filter, fuel filter, and oil drain seal
- Includes spark plugs, thermostat, alternator belt, and water pump repair kit
- Includes aluminum anodes
- Engine oil and gear lube sold separately
- Convenient all-in-one maintenance package
- Produced to Mercury OEM specifications
Service Kit Details
- Brand: Mercury / Quicksilver
- Part Number: 8M0149930
- Part Type: 300-Hour Service Kit Without Oil
- Application: Mercury 3.4L V6 FourStroke Outboards
- Includes Oil: No
- Includes Gear Lube: No
- Quantity Sold: Kit
FAQ
What engines does Mercury 8M0149930 fit?
This kit fits Mercury 3.4L V6 FourStroke outboards.
Does this kit include engine oil?
No. This version does not include engine oil.
Does this kit include gear lube?
No. Gear lube is sold separately.
What parts are included in this 300-hour service kit?
The kit includes an oil filter, fuel filter, oil drain seal,
spark plugs, thermostat, alternator belt, water pump repair kit,
and anodes.
Which anode kit goes with this engine?
This application uses Mercury aluminum anode kit 8M0205955.
Is there a version with oil and gear lube included?
Yes. Mercury 8M0149930-L includes the same 300-hour maintenance parts
with Mercury 10W30 engine oil and gear lube.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Service kits should be verified for correct fitment before installation.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
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