KIBBLEWHITE Exhaust Valve Guide 80-80780

Valve guide wear directly compromises combustion chamber seal and engine performance—this KIBBLEWHITE exhaust valve guide maintains precise bore tolerances and thermal stability under sustained high-RPM operation. Built from Ampco-45, a copper-nickel alloy engineered for racing applications, it delivers superior heat dissipation and wear resistance compared to cast iron alternatives. If you're rebuilding a high-performance engine or replacing guides on a race motor, this U.S.-manufactured component ensures repeatability and longevity.

• Material: Ampco-45 alloy
• Copper content: 80%
• Nickel content: 5%
• Heat conductivity: Excellent
• Wear resistance: High
• MPN: 80-80780
• Origin: Made in USA
• Application: Exhaust valve
• Installation: Professional machining