Holiday Sale

Holley Tall LS Valve Covers with Chevrolet Logo - Satin Black 241-402 Includes Lengthened Hardware, OE Style Baffle System, and Billet Fill Cap Based on our existing tall LS valve covers, the GM Licensed Tall LS valve covers eliminate the factory...

Holley Terminator GM LS 58x MPFI Kit w/ DBW & Trans Control 550-613 Features: For GM LS2/3 engines and 2007 to current 4.8/5.3/6.0 truck engines with 58x crank reluctor, drive-by-wire, and 4L60/4L80E transmissions Kit includes everything you need to...

Holley Terminator X 42 LB/HR EV6 Fuel Injectors 522-428XFM Terminator X Flow Matched High Impedance Fuel Injectors are dynamic flow matched within 1%, resulting in extremely precision and consistent injector characteristics. These injectors provide...

Holley Terminator X GM Gen V LT Early Standalone ECU & Wire Harness 550-1600 Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete...

Holley Terminator X GM Gen V LT Late Standalone ECU & Wire Harness 550-1601 Take control of your GM Gen V LT1, L83, or L86 engine with Terminator X! Do not settle for a factory ECU with a cumbersome tuning interface when you can have complete control...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-903 - 24x/EV1 Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine,...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-904T - 24x/EV1 Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-916T - 24x/EV1 Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-917T - 24x/EV1 Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine,...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-928T - 58x/EV6 Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control...

Holley Terminator X GM LS Standalone ECU & Wire Harness 550-931T - 24x/EV1 Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine,...

Holley Terminator X Max Gen IV GM LS Standalone ECU & Wire Harness 550-933 - 58x/Bosch EV1/DBW Take control of your LS engine with Terminator X Max! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete...