Kibble White 09263100 Valve stem sealRef : KIBW00105A / 09263100

KIBBLEWHITE Valve Guide Seal (ref. 71040-4) — Solid Viton® valve guide seal designed to ensure sealing around the valve stem on motocross bikes. Designed for intake and exhaust applications, it features a tension spring to maintain constant contact with the stem and limit oil leaks into the combustion chamber.

• Brand: KIBBLEWHITE
• Manufacturer reference: 71040-4
• Material: Solid Viton® with tension spring
• Application: Exhaust | Intake
• Stem diameter: 5.50 mm
• Outer diameter: 0.455" (≈ 11.56 mm)
• Length: 0.333" (≈ 8.46 mm)
• Manufactured in: United States

This seal is intended for the preparation and maintenance of motocross cylinder heads where the sealing of the valve stem is critical. It is particularly suitable for YAMAHA YZ 450 F (B11) 2017, YAMAHA YZ 450 F 60th Anniversary (B11) 2016, and YAMAHA YZ 450 F (1SL) 2015 models, among other applications compatible with these dimensions.

Replace your worn guide seals to maintain proper lubrication of the valves and limit smoke and oil loss. Always check the dimensions before installation to ensure compatibility with your cylinder head.