-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)
use when installing a driver side mount axial compressor on the passenger side, in place... see moreuse when installing a driver side mount axial compressor on the passenger side, in place of a correct passenger side mount axial compressor (from Air Conditioning Harness compressor connector to compressor)