COMP Cams 3/8" Hi-Tech Poly Lock 21411507 cost effective tuning tools that

cost effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine

GM A-Body / G-Body 1965-88

check valves

These heli-coil design threads allow higher bolt torque and help keep your battery connected even in high vibration environments

Chevron pattern box quilting is utilized to produce a unique

COMP Cams 3/8" Hi-Tech Poly Lock 21411507 cost effective tuning tools thatThe best polylock for high end race applications, this Hi Tech polylock is designed for 3 8" Ultra Pro Magnum and Ultra Pro Magnum XD rockers. The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the race track. Because no matter what happens on a dyno or in a computer model, if