Description
Valve guide wear compromises cylinder head sealing and increases oil consumption—a problem that compounds with high-performance engine builds and extended track sessions. The KIBBLEWHITE 40-40120 valve guide is engineered with Ampco-45 compound specifically formulated to resist the thermal cycling and abrasive wear that stock guides cannot tolerate. Choose this guide when precision fitment and longevity matter.
- Ampco-45 copper alloy
- 80% copper content
- 5% nickel reinforcement
- Superior heat conductivity
- Exceptional wear resistance
- U.S.A. manufactured
- MPN: 40-40120






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