Namura Top End Gasket Kit for Yamaha YZ400F, WR400F, YZ426F & WR426F 1998-2002

Top End Gasket Kit for Yamaha

This Namura top end gasket kit is designed for Yamaha YZ400F, WR400F, YZ426F, and WR426F models from 1998-2002, providing seals for cylinder head and cylinder installations.

Overview

This top end gasket kit for Yamaha YZ400F, WR400F, YZ426F, and WR426F covers 1998-2002 model years, containing the gaskets needed for a top end rebuild. It includes the head gasket, base gasket, and other sealing components to ensure a reliable seal after piston or cylinder work. The kit is a convenient solution for restoring engine compression and preventing leaks.

Built For Performance

• Includes head, base, and valve cover gaskets
• Manufactured to OEM specifications for fit and seal
• Constructed from high-temperature resistant materials
• Complete kit minimizes the need for separate gasket purchases
• Supports proper torque retention and compression sealing

Fits These Machines

• for Yamaha YZ400F (1998-2002)
• for Yamaha WR400F (1998-2002)
• for Yamaha YZ426F (1998-2002)
• for Yamaha WR426F (1998-2002)

On-The-Job Use

• Engine top end rebuilds
• Piston and ring replacement
• Cylinder head removal and reinstallation

Good To Know

Q: Does this kit include the gaskets for both the cylinder head and base? A: Yes, the kit contains the head gasket, base gasket, and valve cover gasket to cover the full top end assembly.

Q: Can this kit be used on other Yamaha models with similar engines? A: It is specifically designed for the 400/426cc four-stroke engines in the listed models; always verify compatibility with your engine code.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.