Green LED Gauge AutoMeter 8505 Gen 3 Dodge Factory Match Mechanical Boost Gauge AutoMeter Direct-fit DASH Panel Factory matched LED through-the-dial lighting provides clear visibility during nighttime use and matches OEM instrumentation 8405 Gauge, Boost, 2 1/16", 60psi, Mechanical, Ford Factory Match No electrical system required for gauge operation - compatible with every street or race vehicle Mechanical boost gauges have become the staple in boost pressure monitoring for all types of engines, gasoline, diesel, or otherwise. Ultra-precise bourdon tube... Special factory match design blends seamlessly with original equipment instruments featuring soft green LED lighting and illuminated pointers for maximum visibility. AutoMeter 8504 - GAUGE, BOOST, 2 1/16 , 35PS, MECHANCAL, RAM GEN 3 F Gauge kit includes 1/8” nylon line, 1/8” NPT compression fittings, 1/4” NPT adapter, mounting hardware, and detailed instructions for installation