Corvette ZR-1 alternator for 1990-1995 model years. Complete with 6 groove pulley. Brand new (NOS) never mounted, Sparkling condition.This alternator has the larger, somewhat squarish housing, not round like regular corvette, it is the one used with the special LT5 engine. Ready to mount. Good high performance part to have as a spare. Leave name and number in email response for the same from me. If post is up item is for sale. thank you for your interest.