Description
Kibblewhite KPMI, intake valve guide. C630 bronze. STD
17-23 M8
C630 Bronze. Standard size: 0.4750″ O.D. (12.07mm); .2347″ I.D. (5.96mm); 1.655″ OAL (42.04mm). 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.
