Peterson Fluid SystemsTemperature Port Adapter Fitting - 5/8-18 in Female to 12 AN Male O-Ring - Black 111012 eliminating the gasket

eliminating the gasket

1966-1973 Chevrolet El Camino

pipe diameter X 13

1959-1959 GMC FM350

but with "Pro-Flo" under head design

Peterson Fluid SystemsTemperature Port Adapter Fitting - 5/8-18 in Female to 12 AN Male O-Ring - Black 111012 eliminating the gasketPeterson's Temp Port Fittings incorporate a standard AN port plug with an O Ring seal along with a standard 5 8 18 temperature sender port or a pipe port for other gauge senders. Peterson Fluid Systems is the choice of champions for wet and dry sump oiling systems. Peterson Fluid Systems offers a complete system from their class leading oil pumps to their championship winning oil tanks, oil and fuel filters, and accessory drives. Peterson Fluid System