AutoMeter Ultra-Lite Mechanical Boost Analog Gauge is one of the hottest instruments in motorsports. Their aluminum construction greatly reduces their weight, while their satin anodized aluminum faces and black accents make them easy to read. This quality-engineered mechanisms offer proven durability and unbeatable style. It has become the staple in boost pressure monitoring for all types of engines, gasoline, diesel or otherwise. This ultra-precise bourdon tube meter movement ensures accuracy and durability. A simple 1/8-inch NPT pressure connection requires no electrical hookup for operation. It includes 1/8-inch NPT fittings and nylon line kit.