Holley Semi-Truck Custom Gauges
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Holley®Single Channel EGT Controller (554-188A)Universal Single Channel EGT Controller by Holley®. Exhaust Gas Temperature data is critical information when your engine tune up is on the ragged edge. Knowing the exhaust temperature can help you identify potential horsepower left on...High quality at an affordable priceExpertly made from premium materials$149.95 - Holley®Tachometer Input Conditioner (554-131)Universal Tachometer Input Conditioner by Holley®. Designed to eliminate jittery tach signals when using points/tach pin B5 to provide RPM to the 7" Standalone Digital Dash Tachometer Input Conditioner by Holley provides efficient and...Engineered to enhance your vehicle's performanceMade to stringent quality standards$39.95
