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OEM Mercury EFI Oil Pump
Mercury 2.5L / 3.0L EFI Oil Pump Assembly
This OEM Mercury oil pump assembly fits select Mercury and Mariner 150HP-250HP EFI outboards along with compatible 240 EFI SportJet applications.
Mercury part number 8M0185615 supersedes several earlier EFI oil pump assemblies and is used on multiple Mercury 2.5L and 3.0L EFI powerhead platforms.
Compatible Applications
| Horsepower / Model | Engine Family | Engine Type | Application Notes |
|---|---|---|---|
| 150 EFI | Mercury / Mariner 2.5L | EFI 2-Stroke | Select serial-number applications |
| 175 EFI | Mercury / Mariner 2.5L | EFI 2-Stroke | Select EFI powerhead applications |
| 200 EFI | Mercury / Mariner 2.5L | EFI 2-Stroke | Select high-performance EFI models |
| 200 EFI | Mercury / Mariner 3.0L | EFI 2-Stroke | Select 3.0L EFI applications |
| 225 EFI | Mercury / Mariner 3.0L | EFI 2-Stroke | Select offshore and EFI applications |
| 250 EFI | Mercury / Mariner 3.0L | EFI 2-Stroke | Select 3.0L EFI applications |
| 225X EFI Pro Max | Mercury Racing 3.0L | High Performance EFI | Select Pro Max applications |
| SeaPro / Marathon | Mercury 3.0L | Commercial EFI | Select commercial-duty applications |
| 240 EFI / 240 EFI M2 | Mercury SportJet | EFI Jet Drive | Select SportJet powerhead applications |
Always verify your engine serial number before ordering internal engine lubrication components.
OEM Part Numbers & Supersessions
| Type | Part Number |
|---|---|
| Current Mercury OEM Number | 8M0185615 |
| Mercury Supersession | 8M0128081 |
| Mercury Supersession | 8M0101630 |
| Mercury Supersession | 879892T |
| Mercury Supersession | 879892T03 |
| Mercury Supersession | 879892T04 |
| Mercury Supersession | 879892T05 |
What This Oil Pump is Used For
This Mercury EFI oil pump circulates engine oil throughout the powerhead to lubricate crankshaft bearings, rods, pistons, internal rotating assemblies, and other critical engine components.
Proper oil pressure and oil flow are essential for protecting Mercury EFI 2-stroke engines from premature wear and engine damage.
Oil pump wear, contamination, internal scoring, or oil pressure problems can contribute to serious powerhead damage if not repaired promptly.
Oil pumps are commonly replaced during complete engine rebuilds, oil-pressure diagnosis, or major EFI powerhead repair work.
Key Features and Benefits
- OEM Mercury EFI oil pump assembly
- Fits select Mercury and Mariner 2.5L and 3.0L EFI outboards
- Compatible with 240 EFI SportJet applications
- Replaces multiple earlier Mercury oil pump assemblies
- Supports proper engine oil pressure and lubrication
- Critical internal engine lubrication component
- OEM Mercury fit and compatibility
- Common replacement during powerhead rebuild service
Oil Pump Details
- Brand: Mercury Marine
- Part Number: 8M0185615
- OEM Supersessions: 8M0101630, 8M0128081, 879892T, 879892T03, 879892T04, 879892T05
- Applications: Mercury / Mariner EFI 2-Stroke Outboards
- Compatible Engines: 2.5L & 3.0L EFI Platforms
- Compatible Models: EFI, Pro Max, SportJet, SeaPro, Marathon
- System: Engine Lubrication System
- Use: Engine oil circulation and oil pressure supply
FAQ
What engines does this oil pump fit?
This oil pump fits select Mercury and Mariner 150HP-250HP EFI 2-stroke outboards and 240 EFI SportJet models using the listed OEM numbers.
What OEM numbers does this replace?
This pump replaces Mercury part numbers 8M0101630, 8M0128081, 879892T, 879892T03, 879892T04, and 879892T05.
What does an oil pump do?
The oil pump circulates engine oil throughout the engine to lubricate and protect internal moving components.
What are symptoms of a failing oil pump?
Low oil pressure, internal engine noise, warning alarms, or poor lubrication can indicate oil pump problems.
Should engine serial number be verified before ordering?
Yes. Mercury used multiple oil pump variations depending on engine family and production range.
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.
- Internal engine lubrication components should be installed only by qualified technicians.
- 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
8M0185615, 8M0128081, 8M0101630, 879892T, 879892T03, 879892T04, 879892T05, Mercury oil pump, Mercury EFI oil pump, Mercury 2.5L oil pump, Mercury 3.0L oil pump, Mercury SportJet oil pump, Mercury Pro Max oil pump, Mercury SeaPro oil pump, Mercury Marathon oil pump, OEM Mercury oil pump
8M0128081
8M0185615
879892T
879892T03
879892T04
879892T05
383491
45134A1
4513412
6329012
7404812
78376A6
7837612
8M0071838
847207
835083
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
8M0149930, Mercury V6 300 hour service kit, Mercury 3.4L V6 maintenance kit, Mercury FourStroke maintenance kit, Mercury spark plug service kit, Mercury thermostat service kit, Mercury water pump repair kit, Mercury alternator belt kit, Mercury anode service kit, Mercury oil filter fuel filter kit, Mercury 10W30 oil, Mercury gear lube, 8M0149930-L, 8M0205955
8M0168208
OEM Mercury 300-Hour Verado Service Kit Without Oil
Mercury 8M0149932 Service Kit for 4.6L V8 Verado & Verado SeaPro Outboards
The Mercury 8M0149932 300-Hour Service Kit is designed for Mercury 4.6L V8 Verado and Verado SeaPro outboards using the AMS (Advanced MidSection).
This OEM Mercury maintenance package includes the major 300-hour 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 | Midsection | Application Notes |
|---|---|---|---|
| Mercury Verado | 4.6L V8 FourStroke | AMS / Advanced MidSection | Fits compatible Mercury Verado AMS outboards |
| Mercury Verado SeaPro | 4.6L V8 FourStroke | AMS / Advanced MidSection | Fits compatible Mercury Verado SeaPro AMS outboards |
AMS stands for Advanced MidSection. Always verify your exact engine model and serial number before ordering.
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 | 8M0149932 |
| Related Kit With Oil | 8M0149932-L |
| Application | 300-Hour Verado AMS 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:
Mercury 8M0149932-L 300-Hour Verado AMS Service Kit With Oil
Related AMS Anode Kit
Mercury Verado AMS and Verado SeaPro AMS outboards use a different anode configuration than CMS models.
For replacement AMS 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 Verado and Verado SeaPro AMS outboards.
Regular maintenance helps support long-term reliability, proper cooling, fuel system performance, 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 4.6L V8 Verado and Verado SeaPro AMS outboards
- Includes oil filter, fuel filter, and oil drain seal
- Includes spark plugs, thermostat, alternator belt, and water pump repair kit
- Includes AMS 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: 8M0149932
- Part Type: 300-Hour Service Kit Without Oil
- Application: Mercury 4.6L V8 Verado & Verado SeaPro AMS Outboards
- Midsection: AMS / Advanced MidSection
- Includes Oil: No
- Includes Gear Lube: No
- Quantity Sold: Kit
FAQ
What engines does Mercury 8M0149932 fit?
This kit fits Mercury 4.6L V8 Verado and Verado SeaPro AMS 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 AMS anodes.
What is AMS?
AMS stands for Advanced MidSection and is used on Mercury Verado
and certain Mercury Racing applications.
Which anode kit goes with this engine?
This AMS application uses Mercury aluminum anode kit 8M0205955.
Is there a version with oil and gear lube included?
Yes. Mercury 8M0149932-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
8M0149932, Mercury Verado 300 hour service kit, Mercury AMS service kit, Mercury Verado SeaPro service kit, Mercury 4.6L V8 maintenance kit, Mercury Verado maintenance kit, Mercury AMS maintenance kit, Mercury spark plug service kit, Mercury thermostat service kit, Mercury water pump repair kit, Mercury alternator belt kit, Mercury anode service kit, Mercury 10W30 oil, Mercury gear lube, 8M0149932-L, 8M0205955
48045
54870
73813
73813A1
73813F1
8M0058164
861678A1
97401
97401A2
97401A8