Engineered to meet or exceed Yamaha's top-end sealing standards, this Winderosa Branded Top End Gasket Kit provides all essential gaskets and seals needed for a reliable top-end rebuild on the Yamaha YFM550 Grizzly (2009–2014). As an aftermarket replacement, it is designed to deliver OEM-compatible fit and performance, helping restore compression, prevent leaks, and maintain engine integrity during maintenance or rebuilds. This kit is ideal for safeguarding your Yamaha's performance during high-load operation and long rides.

Comprehensive Vehicle Fitment

 

Product Specifications

 

OEM & Aftermarket Cross-Reference Information

OEM and aftermarket cross-reference numbers are provided for reference purposes only. These part numbers are commonly referenced for Yamaha top-end gasket sets and may appear across multiple aftermarket suppliers. Always verify fitment using your machine's exact model, year, and original part number before ordering.

What's Included

Based on standard top-end gasket kits for the YFM550 engine, this Winderosa kit typically includes:

• Cylinder head gasket

• Cylinder base gasket

• Valve cover gasket

• Exhaust gasket

• Intake gaskets

• Timing cover gasket

• Related O-rings and seals as required for complete top-end sealing

Why Choose This Winderosa Top End Gasket Kit?

• Direct-Fit Compatibility: Precision-engineered for Yamaha YFM550 Grizzly models (2009–2014) across all variants including 4x4, EPS, Hunter, and Special Editions .

• OEM Cross-Reference: Cross-references genuine Yamaha part numbers 28P-11181-00-00, 1S3-11351-00-00, and 3B4-15451-00-00 for confident replacement .

• Proven Aftermarket Support: Winderosa is one of the most popular brands in the powersports industry, offering high-quality engine parts and OEM upgrades. Their gasket kits are trusted by factory teams in the USA and are manufactured to meet strict quality standards .

• Verified Compatibility: Leading aftermarket brands including Moose Offroad, Athena, and Vertex all manufacture compatible top-end gasket kits for these models, confirming robust aftermarket support .

• Complete Top-End Coverage: Includes all essential gaskets for cylinder head, base, valve cover, exhaust, intake, and timing covers.

• Restores Compression: New head and base gaskets ensure proper cylinder sealing for optimal engine performance.

• Prevents Leaks: Complete sealing kit prevents oil seepage and maintains clean engine operation.

Installation Notes:

• Ensure all mating surfaces are clean and free from old gasket material before installation.

• Follow manufacturer torque specifications and tightening sequences for cylinder head bolts.

• Use new gaskets only—do not reuse old gaskets once removed.

• Check valve clearance after head installation and adjust if necessary.

• Verify all components are properly seated before reassembling the top end.

• After installation, run the engine and check for any signs of leaks.

Why Upgrade?
Worn or damaged gaskets can cause compression loss, oil leaks, and contamination—leading to poor performance and potential engine damage. Restore your Yamaha YFM550 Grizzly engine's sealing integrity with this quality Winderosa aftermarket top end gasket set, designed to keep you riding with confidence.

Order your top end gasket kit today and get back on the trail with confidence.