AutoMeter Pro-Comp Marine Boost / Vacuum Gauge - 30 in HG-20 psi - 2-1/16 in - White Face Gearshift The RJS Helmet Restraint is

The RJS Helmet Restraint is popular with the oval track racer

1975-1978 GMC C25 Standard Cab Pickup

10-5/8 x 12 in

1979-1988 Jeep J20

AutoMeter Pro-Comp Marine Boost / Vacuum Gauge - 30 in HG-20 psi - 2-1/16 in - White Face Gearshift The RJS Helmet Restraint isThe standard in the industry, AutoMeter's Mechanical Boost Vac gauges have found their way into more builds than any other. Using a patented, high precision bourdon tube meter movement, there isn't another gauge on the market that can lay claim to the levels of accuracy or durability you'll find here. A simple 1 8 in. NPT pressure connection requires no electrical hookup for operation. Appropriate 1 8 in. NPT fittings and line kits are available