stainless steel 65-81 pontiac V8 heater hose nipple fitting to head GTO T/A

This is the fitting that is pressed into the rear of the passenger side cylinder head that the heater hose attaches to.  This is a new piece that is CNC machined of high-grade 416 stainless steel with correct interference fit.  This fitting is used on all V8 Pontiac 326 350 389 400 421 428 455 engines from 65-81.  

Unlike the o-ring style, this coil spring design regulates large fluctuations in flow (maintains 5-6 gallons/minutes) and is compatible with stamped impellers, cast impellers, high volume pumps, and street/strip pumps.

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