AutoMeter Sport-Comp II Mechanical Boost / Vacuum Gauge - 2-1/16 in. RG20003L A single wire 1/8” NPT

A single wire 1/8” NPT temperature sender is included

User selectable standard or metric display ( -30in/Hg~35PSI / -1~2

The smooth curves and increased diameter of this exhaust system helps remove restriction and keeps exhaust gas flowing smoothly for increased horsepower

1987-1989 GMC R3500

Fuel injected engines: METHANOL up to 1

AutoMeter Sport-Comp II Mechanical Boost / Vacuum Gauge - 2-1/16 in. RG20003L A single wire 1/8” NPTThe 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? NPT pressure connection requires no electrical hookup for operation. Includes 1 8? NPT fittings and nylon line kit. Modern white LED