Holley EFI

Holley EFI Wiring Shop just keeps getting better! We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley...

The best crimping tool available for making custom wiring harnesses. Constructed with a heavy duty hardened steel frame with molded non-slip hand grips. An adjustable ratchet mechanism produces consistent factory style high quality crimps. Bringing...

Stainless Steel Fuel Rail Crossover Chevrolet Big Block V8 with Holley MPI Manifolds

Getting a high powered drag car to hook is the key to low elapsed times and win lights. Whether small tire radial car or a full out Pro-Mod, all racecars will benefit from Holley's new Time-Based Traction Management feature. Designed exclusively for...

The LS3/L92 Lo-Ram manifolds top-feed base intake manifold is designed with a low height to aid the packaging of a plenum mounted air-to-water intercooler for forced induction (supercharged or turbocharged) engine applications with peak power at...

Left and right, bright clear anodized, extruded aluminum fuel rails for Chevrolet Small Block V8 with Holley MPI Manifolds.

Holley EFI Fuel Injectors feature a precision lapped disc valve, high-quality brass windings, and high-temp O-rings. These injectors provide excellent linearity with no discernible "bounce" at low pulse widths as commonly found in other injectors. They...

The Holley EFI Can Adapter/Power Harness adapts two pin Holley main harness CAN connectors to new style 4 pin CAN devices.Features90 PPH

The Holley LS1/2/6 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifold and rail kits will work with OE (Original Equipment) or aftermarket cylinder...

Holley EFI Wiring Shop just keeps getting better! We have one goal, to provide you a one stop solution for all of your wiring components needs. From connectors and pins to wire loom and tools! We have everything you need to build or service your Holley...

Replacement fuel rail kits designed for the Lo-Ram intake manifolds with dual injector per cylinder design. Finished in black anodizing, the high volume rails include the mounting hardware and have 3/4"-16 o-ring ports (8AN). The fuel rail kits come with...

PN 558-420 contains 5 extra input/output wires that the base Terminator EFI harness does not contain. It contains Input wires for Inputs 1-4. It contains one wire for Output 2. These inputs and outputs can perform features and functions that must be...