1970-1981 with automatic transmission, all 1982. This is a high torque, lighter weight starter to replace the original, heavy starter. This new starter fits Corvettes with 168 tooth flywheel. To mount this starter 2 bolts (3/8-16 x 4 5/16 with 10mm shank) & gaskets are supplied. Supplied with 4 post solenoid, needed for Corvettes with convention 'points' ignition. Later C3 Corvettes will have electronic ignition, and on these vehicles the solenoid relay post is not used.
Electrical components such as starters are non-returnable parts.
Always refer to a factory service manual when diagnosing engine service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.