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Mercury Outboard Parts
Shop OEM and aftermarket Mercury outboard parts for maintenance, repair, troubleshooting, and complete engine rebuild projects. Browse Mercury marine parts by system, including cooling, fuel delivery, electrical and ignition, internal engine components, lower unit parts, steering, trim, and routine service items.
Pro Marine USA carries Mercury outboard engine parts for a wide range of 2-stroke, FourStroke, EFI, Optimax, Pro XS, SeaPro, and Verado applications. Use your engine horsepower, model, serial number, or OEM part number whenever possible to confirm fitment before ordering.
Shop Mercury Outboard Parts by System
- Complete Powerheads
- Control Cables & Boxes
- Cooling System
- Cowlings & Components
- Electrical System
- Engine Oil
- Engine Rebuild Kits
- Fuel & Carburetion System
- Intake System
- Internal Engine Components
- Lower Unit Components
- Oiling System
- Paints
- Service & Oil Change Kits
- Service Manuals
- Steering Systems
- Throttle Components
- Transom & Midsection
- Trim System
- Wizard Performance Parts
Find the Correct Mercury Outboard Part
Mercury outboard parts can vary by horsepower, engine family, model year, and serial number range. If you are unsure which component fits your engine, use the OEM parts lookup to locate the original Mercury part number from an engine diagram.
Once you have the OEM part number, search Pro Marine to find available genuine Mercury and aftermarket replacement options.
Use Our OEM Parts Lookup »Common Mercury Outboard Engine Families
Pro Marine supports many Mercury outboard applications across a wide horsepower range. Always confirm the engine serial number and model information before ordering parts.
- Portable and Midrange: Mercury 2.5HP through 60HP 2-stroke and FourStroke applications
- FourStroke and EFI: common 75HP through 300HP Mercury EFI and FourStroke platforms
- Pro XS: performance-oriented Mercury Pro XS outboards across multiple engine families
- Optimax: direct-injected 2-stroke Mercury Optimax engines, commonly 75HP through 250HP
- Verado: supercharged and naturally aspirated Mercury Verado applications from 135HP through current high-horsepower platforms
- SeaPro: commercial-duty Mercury SeaPro outboards used in professional and high-hour applications
Common Mercury Outboard Repair Areas
- Overheating: inspect the water pump, impeller, thermostat, poppet valve, cooling passages, and related cooling components.
- Hard starting or rough running: inspect fuel pumps, filters, injectors or carburetors, spark plugs, coils, sensors, and intake components.
- No spark or intermittent ignition: check ignition coils, stators, switch boxes, trigger assemblies, sensors, grounds, and wiring.
- Low compression or power loss: inspect pistons, rings, cylinders, bearings, gaskets, reeds, and internal engine components.
- Lower unit noise or water intrusion: inspect seals, bearings, gears, shafts, bearing carriers, and gear lube condition.
- Trim or steering problems: inspect trim motors, pumps, hydraulic components, steering cylinders, hoses, and related rigging parts.
Why Buy Mercury Outboard Parts from Pro Marine USA?
- OEM Mercury and aftermarket replacement options for many common applications.
- Parts for maintenance, repair, engine rebuilding, lower units, electrical systems, fuel systems, steering, trim, and rigging.
- OEM diagram and part-number lookup tools to help identify the correct part before ordering.
- Dealer pricing available for qualified marine repair businesses and dealers.
- Large inventory of Mercury service parts and hard-to-find marine engine components.
- Fast weekday shipping on qualifying in-stock orders.
Frequently Asked Questions
How do I find the correct Mercury outboard part?
Use the engine horsepower, model, serial number, and year whenever available. Mercury frequently uses serial-number ranges to identify engine families, so the serial number is often the most reliable way to confirm fitment.
Can I search Mercury parts by OEM part number?
Yes. Enter the Mercury OEM part number into the Pro Marine site search to locate available OEM and aftermarket replacement options. If you do not know the part number, use the OEM parts lookup first.
Do Mercury outboard parts vary by serial number?
Yes. Many Mercury components change by serial-number range even within the same horsepower or model family. Always compare the serial range listed for the part with your engine before ordering.
Do you carry parts for Mercury Optimax and Verado engines?
Yes. Pro Marine carries parts for many Mercury Optimax, Verado, Pro XS, EFI, FourStroke, and SeaPro applications, including maintenance, fuel, electrical, cooling, internal engine, lower unit, steering, and rigging components.
Do you carry both OEM and aftermarket Mercury parts?
Yes. Pro Marine offers genuine Mercury parts along with aftermarket replacement parts for many common Mercury outboard maintenance, repair, and rebuild applications.
What Mercury outboard parts are commonly replaced during routine maintenance?
Common maintenance items include engine oil, oil filters, fuel filters, spark plugs, water pump kits, impellers, thermostats, gear lube, drain plug seals, anodes, and manufacturer-specific service kit components.
Fitment Tip: Mercury outboard parts often vary by serial-number range. Confirm your engine serial number and OEM part number whenever possible before ordering.
Genuine Mercury Marine OEM Engine Components
Genuine Mercury 8M0033476 Cylinder Head Gasket for Verado L6 225-300 HP Outboards
The Genuine Mercury 8M0033476 Cylinder Head Gasket is an original equipment manufacturer (OEM) replacement for select Mercury Verado 225, 250, 275, and 300 HP 2.6L Inline 6 (L6) 4-stroke outboard engines.
Manufactured for Mercury Marine applications, this factory replacement gasket is designed to seal the cylinder head to the engine block, helping maintain combustion chamber compression while separating the engine's cooling water and lubrication passages.
Mercury OEM part number 8M0033476 replaces earlier cylinder head gasket number 8M0024564 and cross references 880552007, 895374, 895374002, and 895374006.
This gasket is used during compatible Mercury Verado L6 cylinder head repairs, gasket replacement, and powerhead rebuilding. It is an appropriate choice when a Genuine Mercury factory replacement component is preferred.
Aftermarket Alternative Available: Pro Marine USA also stocks Pro Marine 24564P Cylinder Head Gasket for the same listed applications.
Product Information
- Pro Marine Item Number: 24564
- Manufacturer: Mercury Marine
- Brand: Genuine Mercury OEM
- Mercury OEM Part Number: 8M0033476
- Previous OEM Number: 8M0024564
- Additional Cross References: 880552007, 895374, 895374002, 895374006
- Product Type: Cylinder Head Gasket
- Engine Family: Mercury Verado
- Engine Configuration: Inline 6 Cylinder (L6)
- Displacement: 2.6 Liter
- Engine Type: 4-Stroke Outboard
- Listed Horsepower: 225 HP, 250 HP, 275 HP, 300 HP
- Application: Cylinder Head to Engine Block
- Condition: New
- Aftermarket Alternative: Pro Marine 24564P
OEM and Cross Reference Numbers
Genuine Mercury 8M0033476 is the listed factory replacement for the following Mercury Verado L6 cylinder head gasket part numbers.
| Manufacturer | Part Number | Description |
|---|---|---|
| Mercury Marine | 8M0033476 | Genuine Mercury OEM Cylinder Head Gasket |
| Mercury Marine | 8M0024564 | Previous OEM Part Number |
| Mercury Marine | 880552007 | Earlier Cross Reference |
| Mercury Marine | 895374 | Earlier Cross Reference |
| Mercury Marine | 895374002 | Earlier Cross Reference |
| Mercury Marine | 895374006 | Earlier Cross Reference |
Mercury OEM Replacement Information
Mercury OEM 8M0024564 has been superseded by 8M0033476. If your engine parts diagram references an earlier gasket number, confirm the replacement against your engine serial number before ordering.
What This Part Is Used For
The Mercury Verado L6 cylinder head gasket creates the sealing interface between the cylinder head and engine block.
This gasket helps maintain combustion pressure within the cylinders while preventing cooling water and engine oil from leaking between internal passages.
Genuine Mercury 8M0033476 is used during cylinder head service and compatible Verado L6 engine repairs.
Common Repair Applications
- Mercury Verado L6 cylinder head gasket replacement
- 225 HP Inline 6 Verado engine repairs
- 250 HP Inline 6 Verado engine repairs
- 275 HP Inline 6 Verado engine repairs
- 300 HP Inline 6 Verado engine repairs
- Cylinder head removal and reinstallation
- Repairs involving combustion compression leakage
- Repairs involving cooling water intrusion
- Compatible Mercury Verado powerhead rebuilding
Important Fitment Note
Genuine Mercury 8M0033476 is listed for select Mercury Verado 225, 250, 275, and 300 HP Inline 6 (L6) 4-stroke outboards within the specified serial number ranges.
Mercury manufactured several Verado engine configurations, including Inline 4, Inline 6, V6, V8, and V10 models. Cylinder head gaskets are not interchangeable between all Verado engine families.
Verify your engine horsepower, complete serial number, and required OEM gasket number before ordering.
Compatible Mercury Verado Applications
Genuine Mercury 8M0033476 is listed for select 2.6L Inline 6 Verado outboards in the following horsepower configurations.
| Engine Family | Horsepower | Configuration |
|---|---|---|
| Mercury Verado L6 | 225 HP | 2.6L Inline 6, 4-Stroke |
| Mercury Verado L6 | 250 HP | 2.6L Inline 6, 4-Stroke |
| Mercury Verado L6 | 275 HP | 2.6L Inline 6, 4-Stroke |
| Mercury Verado L6 | 300 HP | 2.6L Inline 6, 4-Stroke |
Mercury Verado L6 Serial Number Fitment
The following serial number ranges are included in the supplied Mercury Verado L6 application data.
| Serial Number From | Serial Number Through | Engine Application |
|---|---|---|
| 1B517434 | 2B144122 | Verado L6 |
| 2B034840 | 2B144122 | Verado L6 |
| 1B830170 | 2B144122 | Verado L6 |
| 2B144123 | 2B577715 | Verado L6 |
| 2B144123 | 2B578935 | Verado L6 |
| 0T980000 | 1B226999 | Verado L6 |
| 1B227000 | 1B381711 | Verado L6 |
| 0P409357 | 0P464487 | Verado L6 |
| 0P520553 | 2B144122 | Verado L6 |
Why Mercury Serial Numbers Matter
Mercury Verado L6 engines were produced in different horsepower ratings and production configurations. Multiple serial number ranges may appear for the same replacement part.
A serial number falling within one of the listed ranges should be checked against the exact engine model and Mercury OEM parts diagram. Serial range alone does not establish compatibility with every Verado engine.
Pro Marine Aftermarket Cylinder Head Gasket Available
Looking for an aftermarket alternative? Pro Marine USA also offers its own replacement cylinder head gasket for the listed Mercury Verado L6 applications.
Pro Marine 24564P - Aftermarket Cylinder Head Gasket
Pro Marine aftermarket replacement cylinder head gasket for select Mercury Verado 225, 250, 275, and 300 HP Inline 6 outboards.
Pro Marine Part: 24564P
Cross Reference: Mercury 8M0033476
Engine Family: Verado 2.6L L6
Brand: Pro Marine Aftermarket
Common Symptoms of a Failed Cylinder Head Gasket
A failed cylinder head gasket can allow combustion gases, engine oil, or cooling water to leak between internal engine passages.
Possible symptoms include:
- Loss of cylinder compression
- Engine overheating
- Cooling water entering the combustion chamber
- Water contamination in engine oil
- Rough idle or engine misfires
- Reduced engine performance
- Difficulty starting
- Combustion gases entering the cooling system
- Visible damage to the original head gasket
These symptoms can have multiple possible causes. Perform appropriate diagnostic testing before determining that the cylinder head gasket requires replacement.
Installation and Service Tips
Replacing a Mercury Verado L6 cylinder head gasket requires removal of the cylinder head and inspection of the engine's sealing surfaces.
Follow the Mercury service manual for your exact engine serial range and configuration.
Recommended Installation Practices
- Confirm the complete Mercury engine serial number.
- Verify that the engine is a compatible 2.6L Inline 6 Verado.
- Confirm the required Mercury OEM gasket number.
- Allow the engine to cool before disassembly.
- Follow the correct cylinder head removal procedure.
- Inspect the cylinder head and block sealing surfaces.
- Check for warpage, cracks, corrosion, and other damage.
- Remove old gasket material without damaging sealing surfaces.
- Keep debris out of cylinders and internal engine passages.
- Install the gasket in the correct orientation.
- Follow Mercury's specified cylinder head tightening sequence.
- Use the correct torque and tightening procedure.
- Replace additional seals or fasteners when required by the service manual.
- Inspect the cooling system for conditions that may have caused the original failure.
- Check engine operation and cooling performance after reassembly.
Important Cylinder Head Installation Warning
Proper installation requires correct surface preparation, cylinder head inspection, and the manufacturer's specified tightening procedure.
Do not install a new cylinder head gasket over warped, cracked, or improperly prepared sealing surfaces. Improper installation can result in compression loss, cooling water leakage, overheating, and engine damage.
Key Features and Benefits
- Genuine Mercury OEM: Original equipment manufacturer replacement cylinder head gasket.
- Verado L6 Compatibility: Listed for select Mercury 2.6L Inline 6 outboard engines.
- 225-300 HP Applications: Covers the specified 225, 250, 275, and 300 HP engine configurations.
- Mercury Part Number 8M0033476: Listed replacement for earlier Mercury 8M0024564 applications.
- Factory Replacement Component: Intended for compatible cylinder head service and repairs.
- Combustion Chamber Sealing: Provides the gasket interface between the cylinder head and engine block.
- Aftermarket Alternative Available: Pro Marine 24564P is offered separately.
- Dealer Pricing Available: Qualified marine businesses can apply for wholesale pricing.
Frequently Asked Questions
Is Mercury 8M0033476 a Genuine OEM cylinder head gasket?
Yes. Mercury 8M0033476 is a Genuine Mercury Marine OEM cylinder head gasket for compatible Verado L6 outboards.
Does Mercury 8M0033476 replace 8M0024564?
Yes. Mercury 8M0033476 is the listed replacement for earlier OEM number 8M0024564.
What Mercury Verado engines use this gasket?
This gasket is listed for select Mercury Verado 225, 250, 275, and 300 HP 2.6L Inline 6 4-stroke outboards within the specified serial ranges.
Does this gasket fit Mercury Verado 225 HP engines?
Yes, on compatible 225 HP L6 models within the listed serial number applications.
Does this gasket fit Mercury Verado 250 HP engines?
Yes, on compatible 250 HP L6 models within the listed serial number applications.
Does this gasket fit Mercury Verado 275 HP engines?
Yes, on compatible 275 HP L6 models within the listed serial number applications.
Does this gasket fit Mercury Verado 300 HP engines?
Yes, on compatible 300 HP L6 models within the listed serial number applications.
Will this gasket fit a Mercury Verado V8 or V10?
No. This listing is for compatible 2.6L Inline 6 Verado applications, not Mercury Verado V8 or V10 engines.
Is there an aftermarket replacement for Mercury 8M0033476?
Yes. Pro Marine USA offers Pro Marine 24564P as an aftermarket alternative for the listed applications.
How do I confirm the correct head gasket for my Verado?
Locate your Mercury engine serial number and compare it with the applicable Mercury parts diagram. Confirm that the diagram identifies 8M0033476 or a listed replacement number.
Dealer Discounts & Store Policies
Wholesale Marine Parts Pricing
Pro Marine USA supplies Genuine Mercury OEM and aftermarket marine engine parts, cylinder head gaskets, internal engine components, rebuild parts, and maintenance products to marine repair shops, dealerships, technicians, and retail customers.
Qualified marine businesses can apply for a Pro Marine dealer account to access wholesale pricing on eligible marine engine parts.
Shipping Information
- Free shipping on orders over $100 within the continental United States.
- In-stock orders received before 5:30 PM EST ship the same business day, Monday-Friday.
- Shipping options available through UPS, USPS, and FedEx.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Eligible returns are accepted within 30 days.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before returning merchandise.
Need Help Confirming Mercury Verado Fitment?
If you are unsure whether Genuine Mercury 8M0033476 is the correct cylinder head gasket for your Mercury Verado outboard, contact Pro Marine USA with your engine horsepower and complete serial number.
Contact Pro Marine USA or call 941-721-3000.
Searchable Part Numbers
24564, 24564P, 8M0033476, 8M0024564, 880552007, 895374, 895374002, 895374006, 27-8M0033476, 27-8M0024564, 27-895374006
Searchable Terms
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