Engineered to meet or exceed Yamaha's top-end sealing standards, this Top End Gasket Set provides reliable compression and gasket integrity for your YFM450 Kodiak rebuild. As an aftermarket replacement, it is designed to deliver OEM-like performance and durability across 2018–2023 Kodiak models. Includes all gaskets and seals required for a complete top-end refresh, helping you restore power and reliability after an engine build.

This kit is manufactured as Aftermarket Replacement and is designed to withstand the heat and pressures of modern Yamaha engines during a full top-end rebuild.

Comprehensive Vehicle Fitment

*Fitment verified for Yamaha YFM450 Kodiak 450 within the 2018–2023 model years. Additional fitment for 2019-2023 models is confirmed by aftermarket suppliers .*

Product Specifications

 

Kit Includes

• Head gasket

• Base gasket

• Upper end gaskets (includes valve cover and related upper-end seals)

• Exhaust gasket 

• Timing cover gasket

• Associated O-rings and seals as required

*These inclusions reflect typical top-end gasket kits and align with the reference sets used by major aftermarket suppliers for Yamaha YFM450 Kodiak builds.*

OEM Cross-Reference Information

OEM 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.

Why Choose This Top End Gasket Set?

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

• Direct-Fit Compatibility: Precision-engineered for Yamaha YFM450 Kodiak 450 models (2018–2023) including 4x4 Auto, EPS, and EPS SE variants .

• OEM Cross-Reference: Cross-references genuine Yamaha part numbers for confident replacement; compatible with additional gaskets like stator cover (5GH-15451-00) and clutch cover (5GH-15463-00) .

• Proven Aftermarket Support: Leading aftermarket brands manufacture compatible components, including Caltric exhaust gaskets  and Namura clutch cover gaskets .

• Multi-Layer Construction: High-quality gasket materials designed to withstand engine heat and pressure.

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

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

• Cost-Effective: Aftermarket replacement provides OEM-equivalent quality at a practical price point.

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 YFM450 Kodiak engine's sealing integrity with this quality aftermarket top end gasket set, designed to keep you riding with confidence.

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