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COMP Cams Pro Magnum hydraulic roller lifters are built for Chevrolet small‑block and Gen III/LS engines, optimized to perform at higher engine speeds and resist 'pumping up' at high RPM. These individual OE‑style drop‑in hydraulic roller lifters require an adjustable valve train and must be pre‑loaded to .002"–.004" for proper operation, helping maintain valve control under demanding conditions.
COMP Cams Lifter CS OE Drop-In Hydraulic Roller S
