-3/8-18 NPTF-, V8, Chevrolet small block, with factory gauges & aftermarket or 1981-up cylinder heads... see more-3/8-18 NPTF-, V8, Chevrolet small block, with factory gauges & aftermarket or 1981-up cylinder heads which have a smaller sending unit hole (correct resistance and connection, produces accurate gauge display)
Monte Carlo Note: Requires use of 2 of part #39668 HEADLIGHT BUCKET EXTENSION HARNESSMonte Carlo Note: Requires use of 2 of part #39668 HEADLIGHT BUCKET EXTENSION HARNESS