This is a heavy duty single roller chain that uses an improved alloy steel and the sideplates have an increased thickness to improve strength
This chain can be used on all LS engines and can be used with stock gears.
Replacement for GM Part #'s: 12646386 and 12586482
Description
Performance Heavy Duty Timing Chain - Replaces 12646386 This is a heavy duty single roller chain that uses an improved alloy steel and the sideplates have an increased thickness to improve strength. This chain can be used on all LS engines and can be used with stock gears. Replacement for GM Part 12646386 125864