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COMETIC Top End Gasket Kit 98Mm Yam — C3178-EST

Name: COMETIC Top End Gasket Kit 98Mm Yam — C3178-EST
Brand: COMETIC
SKU: WP68-31780E
Price: 89.95 USD
Availability: InStock

$89.95

Top End Gasket Kit 98Mm Yam.

In stock

SKU: WP68-31780E

Brands: COMETIC

Top End Gasket Kit 98Mm Yam

RAISES COMPRESSION FOR BETTER LOW END POWER
GRAPHITE GASKETS FEATURE A STEEL CORE, LAMINATED ON BOTH SIDES WITH FLEXIBLE GRAPHITE
FIBER GASKETS DESIGNED FOR MAXIMUM SEAL, FLEXIBILITY AND TORQUE RETENTION
O-RING GASKETS MEET OR EXCEED OEM SPECIFICATIONS

Manufacturer part C3178-EST
WPS part 68-31780E

WPS lists this part for the following vehicles. Match your exact model and year.

Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.

Compatible vehicle years, makes and models
Years	Make	Model
2007–2015	Yamaha	WR450F
2006–2009	Yamaha	YZ450F

Source: WPS vehicle-fitment data · WPS part 68-31780E · Checked November 12, 2026.

Weight	0.21 lbs
Dimensions	6 × 7 × 0.5 in

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Engine gaskets & seals
Match the engine and assembly; replace seals disturbed during access and check kit contents.
Engine oil
Only refill or replace fluids disturbed by the repair, using the specified grade and capacity.
Installation tools
Use the tools and torque procedure specified for your exact motorcycle.