Kibblewhite KPMI, exhaust valve guide. C630 bronze. STD

Description

Kibblewhite KPMI, exhaust valve guide. C630 bronze. STD

17-23 M8

C630 bearing bronze. Standard size: 0.4750″ O.D. (12.07mm); 0.2342″ I.D. (5.95mm); 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.

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