Description
KIBBLEW KPMI, intake valve guide. C630 bronze. STD
57-83 XL(NU)
C630 bearing bronze. Standard size: 0.5650″ O.D. (14.35mm); 0.3085″ I.D. (7.84mm); 1.77″ OAL (44.96mm). 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.