Genuine Mercury Head Gasket Verado L6 225-300 HP 8M0033476

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.

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.

Mercury Verado L6 Serial Number Fitment

The following serial number ranges are included in the supplied Mercury Verado L6 application data.

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

View Pro Marine Aftermarket Gasket

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

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.

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.

Apply for Dealer Pricing

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

Genuine Mercury 8M0033476, Mercury 8M0024564, Mercury 880552007, Mercury 895374, Mercury 895374002, Mercury 895374006, Mercury Verado OEM head gasket, Genuine Mercury Verado head gasket, Mercury Verado cylinder head gasket, Mercury Verado L6 head gasket, Mercury Verado Inline 6 head gasket, Mercury Verado 2.6L head gasket, Mercury Verado 225HP head gasket, Mercury Verado 250HP head gasket, Mercury Verado 275HP head gasket, Mercury Verado 300HP head gasket, Mercury Verado 225-300 HP head gasket, Mercury 225 Verado cylinder head gasket, Mercury 250 Verado cylinder head gasket, Mercury 275 Verado cylinder head gasket, Mercury 300 Verado cylinder head gasket, Mercury 6 cylinder head gasket, Mercury 4 stroke head gasket, Mercury L6 cylinder head gasket, Mercury outboard cylinder head gasket, Verado powerhead head gasket, Verado powerhead repair, Mercury Verado engine rebuild, Mercury Verado cylinder head repair, Mercury Verado compression loss, Mercury Verado cooling water intrusion, Mercury OEM engine parts, factory Mercury head gasket, original Mercury head gasket, Pro Marine 24564, Pro Marine 24564P aftermarket alternative