OptiTorque TorqueMaster Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - GM LS-Series 10413 10301 1/8" NPT Female to -3AN

1/8" NPT Female to -3AN Male Use to connect #3 (-3AN) braided stainless steel line to AutoMeter Mechanical gauges and Electric Pressure gauge senders

We feature Hastings Tough Guy Racing Piston Rings at low everyday prices

Symmetrical design makes multiple configurations possible

(2) Nut-Ring Flanges & Gaskets

1979-1986 Mercury Marquis

OptiTorque TorqueMaster Series Cylinder Head Stud Kit - 12 Point Nuts - Chromoly - GM LS-Series 10413 10301 1/8" NPT Female to -3ANProduct Description: Cylinder Head Stud Kit TorqueMaster Series 12 Point Nuts Chromoly Black Oxide GM LS Series OptiTorque produces premium quality fasteners for a wide range of automotive applications. From stock rebuilds to hard core racing builds, OptiTorque fasteners are USA made and designed, featuring premium materials and designed to meet or exceed OEM specs.