-3/8-18 NPTF-, all V8, Chevrolet small block, with factory gauges & aftermarket or 1981-up cylinder... see more-3/8-18 NPTF-, all 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)
all 1st design: VIN ending in 00001 to 27372, alarm switch located in driver side... see moreall 1st design: VIN ending in 00001 to 27372, alarm switch located in driver side front fender & alarm horn located in driver side rear fender
(includes complete car set of 4 seals, installs onto glass nib on back of headlight... see more(includes complete car set of 4 seals, installs onto glass nib on back of headlight bulb and over fiberoptic in headlight bulb connector to permit optimal light transfer)