AutoMeter Ultra-Lite II Mechanical Boost / Vacuum Gauge - 2-1/16 in. H77803FM Upgrade your existing Variable Speed

Upgrade your existing Variable Speed Controller and conveniently install it in your Rocker Switch panel

1977-1978 GMC K25

Often used when connecting sensors

Adjustable Tube Clamp

AutoMeter Ultra-Lite II Mechanical Boost / Vacuum Gauge - 2-1/16 in. H77803FM Upgrade your existing Variable SpeedThe 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