New reproduction 19651970 Corvette fan clutch. Correct for all big block equipped Corvettes. Includes "CK" stamped on clutch assembly. 2 5/16" water pump hub. Thermostatic fan clutch "locks" up as temperatures rise in the engine compartment. Features original "bar" style thermostat.

New modern design includes seals with greater leak resistance, ball bearings to insure no "wobble - smooth operation at high RPM levels. Thermostatic design is fully engaged at 165 degrees for maximum cooling efficiency.