KIBBLEWHITE Valve Guide 40-40570

Valve guide wear directly impacts compression, oil consumption, and combustion efficiency—and Kibblewhite's engineered solution addresses all three. The Ampco-45 compound used in this guide delivers superior heat conductivity and wear resistance, keeping your valve train operating at peak precision under extreme temperatures and high RPM cycles. Whether you're rebuilding a high-mileage engine or upgrading a performance build, this U.S.-manufactured guide ensures reliable valve sealing and longevity.

• Ampco-45 copper alloy
• 80% copper content
• 5% nickel reinforcement
• Superior heat conductivity
• Exceptional wear resistance
• Made in USA
• MPN: 40-40570
• Precision engineered
• OEM-quality construction