Chevy 10 ½ inch clutch bell housing. It is cast # 3840383 which is the same as a 403 bell. This bell is correct for all Chevelle, Camaro, Corvette & Nova V8 cars (except 64 to 67 Nova) from the mid 60s through the 70s with 10 ½ inch clutch. Does not fit Impala (no provision for pivot ball). No cracks, repairs, snapped bolts, or stripped threads. Buyer be sure of your needs. Great idea to have spare parts before you need them. Payment in 5 days plus FREE shipping and handling to the lower 58.