KPMI, EXHAUST VALVE GUIDE. C630 BRONZE. +.010"

KPMI, exhaust valve guide. C630 bronze. +.010"

C630 bearing bronze is a tough nickel-aluminum-bronze alloy typically used in high performance and racing applications where rapid heat transfer from the valve to head is important. Note: Standard non-oversize dimensions (for reference only) are 0.5650" O.D. (14.35mm); 0.3085" I.D. (7.84mm); 1.77" OAL (44.96mm).

Fits: > 57-83 XL(NU)