Cylinder Head Gasket – Fits Yamaha 200-250 HP V6 4-Stroke Outboards (Replaces 6P2-11181-00-00)
Cylinder Head Gasket – Fits Yamaha 200-250 HP V6 4-Stroke Outboards (Replaces 6P2-11181-00-00) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Cylinder Head Gasket – Fits Yamaha 200-250 HP V6 4-Stroke Outboards...
Product Details
This is a replacement Cylinder Head Gasket – Fits Yamaha 200-250 HP V6 4-Stroke Outboards specifically designed for the starboard (right) side of Yamaha 4-Stroke V6 F200, F225, and F250 outboard motors manufactured between 2005 and 2019. It ensures a precise seal for optimal engine compression and performance.
This part directly replaces Yamaha OEM part 6P2-11181-00-00 and is an interchange for WSM 506-37, EMP 27-00656, and Mercury Marine 8M6010320.
- Installation Location: Starboard (Right) Side
- Material: High-strength multi-layer metal/composite construction
- Source: Manufactured in Japan to OEM specifications
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 6P2-11181-00-00 | |
| WSM | 506-37 | |
| EMP | 27-00656 | |
| Mercury Marine | 8M6010320 | HEAD GSKT STBD |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha owners, this part is specific to V6 4-stroke models from 200 to 250 HP built between 2005 and 2019.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F200 V6 | 200 | 4-Stroke | 2005–2019 | 6P2-11181-00-00 | Cylinder Head Gasket 1 (Starboard side) |
| Yamaha | F225 V6 | 225 | 4-Stroke | 2005–2019 | 6P2-11181-00-00 | Cylinder Head Gasket 1 (Starboard side) |
| Yamaha | F250 V6 | 250 | 4-Stroke | 2005–2019 | 6P2-11181-00-00 | Cylinder Head Gasket 1 (Starboard side) |
Technical Specs
- Product Type
- Cylinder Head Gasket
- Installation
- Starboard (Right) Side
- Fuel Type
- Gasoline
- Housing Material
- Multi-layer Metal/Composite
- Dimensions
- 47.5" L x 30.0" W x 0.5" H
- Other Technical Attributes
- OEM Japan Manufactured
- Warranty
- 30-day return policy (OEM parts)
What’s in the Box
- 1 x Gasket, Cylinder Head 1 (6P2-11181-00-00)
Installation Notes
- Ensure the engine is cool and disconnect the battery. Drain the cooling system and engine oil.
- Disconnect all electrical connectors, fuel lines, and hoses from the cylinder head. Remove the valve cover and timing belt/chain.
- Following the manufacturer's service manual, loosen the cylinder head bolts in the specified sequence to prevent warping.
- Carefully lift the cylinder head off the engine block. Clean both the block and head surfaces thoroughly, removing all old gasket material and carbon deposits.
- Place the new gasket into position, ensuring it aligns with the locating dowels. Do not use any sealant unless explicitly required by the manufacturer.
- Reinstall the cylinder head and tighten the bolts in the correct sequence and to the specified torque values using a calibrated torque wrench.
- Reassemble all remaining components in the reverse order of removal. Refill coolant and oil before starting the engine.
Troubleshooting & FAQ
How do I know this gasket fits my exact engine?
Verify your engine model, horsepower, and year against the "Engine & Model Compatibility" table. This gasket is specifically for the starboard (right) side of Yamaha 200-250 HP V6 4-stroke outboards from 2005–2019.
What are common signs of a failed head gasket?
Symptoms of a bad head gasket include engine overheating, a milky appearance in the engine oil, white smoke from the exhaust (burning coolant), loss of power, and visible coolant or oil leaks from the engine block/head seam.
When should a head gasket be replaced?
There is no fixed replacement interval. Head gaskets are typically replaced during an engine rebuild or when signs of failure, such as those listed above, are diagnosed.
Is this gasket for the port or starboard side of the engine?
This part is designed exclusively for the starboard (right) side of the engine block. A different part number is required for the port (left) side.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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