Engineered to meet or exceed Yamaha's top-end sealing standards, this gasket kit is designed to provide a reliable seal in the cylinder head for the YFM350 Bruin (2004–2006) and YFM350 Grizzly (2007–2014). The kit includes Top End Gasket only, ensuring a precise, factory-style seal without extra components. This aftermarket replacement part is ideal for engine rebuilds, helping restore compression, minimise leaks, and maintain consistent performance across the specified models.

Comprehensive Vehicle Fitment

*Compatible with Yamaha YFM350 Bruin 2WD/4WD (2004–2006) and YFM350 Grizzly 2WD/4WD (2007–2014). Always cross-reference with your service manual and OEM schematics to confirm exact fitment for your machine.*

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 YFM350 engine, this Winderosa kit typically includes:

• Cylinder head gasket

• Cylinder base gasket

• Intake gaskets

• Exhaust gasket(s)

• Valve stem seals (included in complete kits)

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

Note: This specific kit is for Top End Gasket Only. Complete rebuild kits with additional components are available from multiple suppliers as listed in the cross-reference section .

Why Choose This Aftermarket Top End Gasket Kit?

• Direct-Fit Compatibility: Precision-engineered for Yamaha YFM350 Bruin (2004–2006) and YFM350 Grizzly (2007–2014) models, confirmed by multiple aftermarket suppliers .

• OEM Cross-Reference: Cross-references genuine Yamaha part numbers 1UY-11181-01-00  and 4KB-11351-00-00 for confident replacement.

• Proven Aftermarket Support: Multiple respected aftermarket brands manufacture compatible gasket kits:

  • Cometic offers top-end gasket sets made in the USA with Extreme Sealing Technology (EST) that meets and exceeds OEM specifications .

  • Athena provides precision-engineered cylinder head gaskets with high precision laser cutting technology, completely eliminating production burrs .

  • Wiseco delivers OEM+ quality gasket kits inspected for quality and accuracy, manufactured by leading gasket suppliers .

• Complete Rebuild Options: For comprehensive engine rebuilding, complete top-end kits including cylinder, piston, rings, and camshaft are available from multiple suppliers .

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

• Prevents Leaks: Proper sealing 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.

• Some aftermarket kits may require additional sealant or omit specific gaskets like the chain tensioner gasket—verify contents against your needs .

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 YFM350 Bruin or Grizzly engine's sealing integrity with this quality 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