Flywheel to Crankshft mounting bolts from ARP made from heat treated 8740 chrome moly steel with a black oxide finish. These bolts are commonly used on 2013 on Chevy L1/LT4 engines with M11x1.5 metric crank threads.
M11x1.5, 29mm U.H.L. 12pt Socket
Supplied in pack of 8