ARP 206-5002 Main Bolt Kit for MGB 5 ymm_16 this innovative design comes directly

this innovative design comes directly from race-proven exhaust systems

enhancing the driving sensation as revs rise

Standard 1/8”- 27 NPT inlet/outlet with included ¼” push-to-lock hose fittings for easy installation

Montclair 1964-1968

ARP 206-5002 Main Bolt Kit for MGB 5 ymm_16 this innovative design comes directlyFar superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under head radius and rolled threads for the utmost reliability. The threads are rolled after heat treating, which makes them about 1000% longer fatigue life than most main bolts, which are threaded prior to heat