Yamaha Motors

Cylinder Head Gasket 6H4-11181-A2-00

Country of Origin:

Japan

Satisfaction rating

(3 Ratings)

Genuine OEM product

Product	Price	Rating	Comment
Yamaha Motors 6H4-11181-A2-00 Cylinder Head Gasket (viewing this product) Genuine OEM product	$42.39~~$52.99~~ In stock 5+ in stock	Best	Genuine Yamaha Japan-made gasket with a composite sealing body and properly formed metal fire rings around all three cylinders for high-pressure combustion sealing. The precise OEM die-cut oil/coolant passages and controlled thickness/material spec make it the lowest-risk choice for a labor-intensive head gasket replacement.
Genuine Yamaha Japan-made gasket with a composite sealing body and properly formed metal fire rings around all three cylinders for high-pressure combustion sealing. The precise OEM die-cut oil/coolant passages and controlled thickness/material spec make it the lowest-risk choice for a labor-intensive head gasket replacement.
GLM Marine 34930 Head Gasket (34930) Aftermarket product	$37.50~~$46.88~~ In stock Only 2 remaining	Better	Marked "VICTOR REINZ" "AFM 20" with a stated 1.20 mm thickness, giving clear traceability to a known premium gasket sheet material and consistent spec control. Fire rings and all bolt/fluid cutouts match the OEM pattern closely, making it a high-quality direct-fit alternative (verify thickness is correct for your exact engine version).
Marked "VICTOR REINZ" "AFM 20" with a stated 1.20 mm thickness, giving clear traceability to a known premium gasket sheet material and consistent spec control. Fire rings and all bolt/fluid cutouts match the OEM pattern closely, making it a high-quality direct-fit alternative (verify thickness is correct for your exact engine version).
Recmar REC6H4-11181-00 CYLINDERHEAD GASKET (REC6H4-11181-00) Aftermarket product	$24.53~~$27.26~~ In stock Only 1 remaining	Good	Matches the OEM geometry and includes metal fire rings, so it should fit and function as a replacement. The composite surface looks more granular and the metal-to-composite interface appears slightly less refined than the OEM, which reduces confidence for a critical, high-load sealing application.
Matches the OEM geometry and includes metal fire rings, so it should fit and function as a replacement. The composite surface looks more granular and the metal-to-composite interface appears slightly less refined than the OEM, which reduces confidence for a critical, high-load sealing application.
Peach Motors PM-6H4-11181-A2-00 Gasket, Cylinder Head Aftermarket product	$43.55 In stock 5+ in stock	Good	Appears nearly identical to the OEM in shape, composite texture, and metal fire ring construction, with the same bolt-hole and coolant/oil passage layout. However, there are no visible material-grade or thickness markings and it is not OEM-sourced, so long-term sealing consistency is harder to confirm versus Yamaha or clearly specified sheet-material gaskets.
Appears nearly identical to the OEM in shape, composite texture, and metal fire ring construction, with the same bolt-hole and coolant/oil passage layout. However, there are no visible material-grade or thickness markings and it is not OEM-sourced, so long-term sealing consistency is harder to confirm versus Yamaha or clearly specified sheet-material gaskets.
Sierra Marine 18-3830 HEAD GASKET YAMAHA Aftermarket product	$43.95 No longer availableSearch Nationwide Inventory	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

$42.39~~$52.99~~

You save 20%($10.60)

-20%

In stock

5+ in stock

Qty

Guaranteed fitment for 5 different models

This is an OEM part manufactured by Yamaha Motors

30 day return policy

PartX Alternatives — This part: Best

Ratings provided by PartX™

Product	Price	Rating	Comment
Yamaha Motors 6H4-11181-A2-00 Cylinder Head Gasket (viewing this product) Genuine OEM product	$44.03~~$51.80~~ In stock 5+ in stock	Best	Genuine Yamaha Japan-made gasket with a composite sealing body and properly formed metal fire rings around all three cylinders for high-pressure combustion sealing. The precise OEM die-cut oil/coolant passages and controlled thickness/material spec make it the lowest-risk choice for a labor-intensive head gasket replacement.
Genuine Yamaha Japan-made gasket with a composite sealing body and properly formed metal fire rings around all three cylinders for high-pressure combustion sealing. The precise OEM die-cut oil/coolant passages and controlled thickness/material spec make it the lowest-risk choice for a labor-intensive head gasket replacement.
GLM Marine 34930 Head Gasket (34930) Aftermarket product	$37.50~~$46.88~~ In stock Only 2 remaining	Better	Marked "VICTOR REINZ" "AFM 20" with a stated 1.20 mm thickness, giving clear traceability to a known premium gasket sheet material and consistent spec control. Fire rings and all bolt/fluid cutouts match the OEM pattern closely, making it a high-quality direct-fit alternative (verify thickness is correct for your exact engine version).
Marked "VICTOR REINZ" "AFM 20" with a stated 1.20 mm thickness, giving clear traceability to a known premium gasket sheet material and consistent spec control. Fire rings and all bolt/fluid cutouts match the OEM pattern closely, making it a high-quality direct-fit alternative (verify thickness is correct for your exact engine version).
Recmar REC6H4-11181-00 CYLINDERHEAD GASKET (REC6H4-11181-00) Aftermarket product	$24.53~~$27.26~~ In stock Only 1 remaining	Good	Matches the OEM geometry and includes metal fire rings, so it should fit and function as a replacement. The composite surface looks more granular and the metal-to-composite interface appears slightly less refined than the OEM, which reduces confidence for a critical, high-load sealing application.
Matches the OEM geometry and includes metal fire rings, so it should fit and function as a replacement. The composite surface looks more granular and the metal-to-composite interface appears slightly less refined than the OEM, which reduces confidence for a critical, high-load sealing application.
Peach Motors PM-6H4-11181-A2-00 Gasket, Cylinder Head Aftermarket product	$43.55 In stock 5+ in stock	Good	Appears nearly identical to the OEM in shape, composite texture, and metal fire ring construction, with the same bolt-hole and coolant/oil passage layout. However, there are no visible material-grade or thickness markings and it is not OEM-sourced, so long-term sealing consistency is harder to confirm versus Yamaha or clearly specified sheet-material gaskets.
Appears nearly identical to the OEM in shape, composite texture, and metal fire ring construction, with the same bolt-hole and coolant/oil passage layout. However, there are no visible material-grade or thickness markings and it is not OEM-sourced, so long-term sealing consistency is harder to confirm versus Yamaha or clearly specified sheet-material gaskets.
Sierra Marine 18-3830 HEAD GASKET YAMAHA Aftermarket product	$43.95 No longer availableSearch Nationwide Inventory	Unknown	We are working hard to determine a rating based on all available information, including product and manufacturing specifications.
We are working hard to determine a rating based on all available information, including product and manufacturing specifications.

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Product Questions ⁰

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3 Product Reviews

Engine: yamaha 50 hp Shopping experience: very good fast service easy to order with them Repair difficulty: Easy Repair time: 1 to 2 hours replace head gasket&thermostat

roy french — Jul 13, 2023

Engine: yamaha 40 Repair difficulty: Professional Repair time: More than 4 hours

Juri suvorov — Jun 22, 2015

Engine: yamaha 40 Shopping experience: wery well Repair difficulty: Professional Repair time: More than 4 hours

Juri suvorov — May 27, 2015

Parts Fitment

Please verify fitment before ordering.

Brand	Product Line	Model
Yamaha Motors	International	25
Yamaha Motors	International	40
Yamaha Motors	International	50
Yamaha Motors	Outboard	40
Yamaha Motors	Outboard	50

Supersession Chain

Name	SKU	Superseding SKU
Cylinder Head GasketViewing this product	6H4-11181-A2-00	Current
Obsolete Yamaha Part	6H4-11181-A1-00	6H4-11181-A2-00
Cylinder Head Gasket	6H4-11181-A0-00	6H4-11181-A1-00
6H4-11181-A0-00	6H4-11181-00-00	6H4-11181-A0-00

Aftermarket Interchange

Name	SKU	Price	Brand
Gasket, Cylinder Head	PM-6H4-11181-A2-00	$43.55	Peach Motors
CYLINDERHEAD GASKET (REC6H4-11181-00)	REC6H4-11181-00	$24.53	Recmar
Head Gasket (34930)	34930	$37.50	GLM Marine
HEAD GASKET YAMAHA	18-3830	$43.95	Sierra Marine