AutoMeter Traditional Chrome - Mechanical Boost / Vacuum Gauge - 2-1/16 in. H776427XXL the upper insulator will now

the upper insulator will now be white instead of yellow

inlets/standoffs to convert to 3/4 x 16 thread

such as ALL42150

Three 2-5/8 in Holes

AutoMeter Traditional Chrome - Mechanical Boost / Vacuum Gauge - 2-1/16 in. H776427XXL the upper insulator will nowThe 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. Features: Traditional