Starter ring gear for IH 152, 196 or 266, 304, 345, 392 V8 engines.Although this item is specifically designed for manual transmission flywheels this item could be used on automatic transmission flex plates.OD (Inches) 16.033ID (Inches) 15.103Pitch 12/14Width (Inches) .365Teeth 192Chamfer NoneIH part number 151116R1