Fits GM LS applications 1997-2015, Center hole diameter 2.070 (1 pc rear main seal), Internal balance, 168 tooth ring gear, Clutch bolt patterns: GM metric diaphragm 11 7/8" clutches with 12.625" bolt circle, 10mm – 1.5 thread, GM 11", 12" clutches with 12.625" bolt circles, 3/8-16 thread.
