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Single Plane EFI LS Intake Manifold. All GM LS Gen III or IV engines equipped with LS1/LS2/LS6 style cathedral port cylinder heads.Features: 2500-7000 RPM power band 4150 Square bore flange Optimized runner layout and constant cross sectional area...

Improve your installation experience by using our ignition adapter harness for your Sniper EFI product. Simply plug in both connectors, terminate the pink wire to a switched 12V ignition source, and you're all set.Features: Plug and Play Adapter f...

The Holley LS3 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equippedwith GM LS3/L92 cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ramintake manifolds are designed for fo...

This in-tank fuel pump module is a high-pressure unit that flows 350 liters per hour (LPH) and is capable of supporting electronic fuel injection (EFI) engines producing up to 750 horsepower. A pre-calibrated fuel-level sending unit designed to wo...

The heart of a fuel system begins with the fuel tank. When building a fuel system, swapping a carb, or converting to EFI, it is crucial that you do not contaminate your new parts with dirt, rust, and sludge from an old fuel tank. We offer a simpl...

Holley is now offering cost effective fabricated intake manifolds for LS, Small Block Chevy and Small Block Ford engines in carbureted and EFI versions.Features: Black Finish creates stealthy under-hood styling 3mm (1/8") thick T6061 sheet aluminu...

These cast aluminum EFI intake elbows allow the use of GM LS throttle bodies on any intake manifold w/ the 4500 mounting flange. Our design incorporates an optimized transition from the throttle body to the intake plenum for maximum airflow and di...

Terminated Vehicle Harness For Digital DashSpecs: Brand: Holley EFI Category: Electrical, Lighting and Body Emission Code: 5 Part Type: Dashboard Wiring Harness Product Type: Digital Dash Harness / Adapter / Module Sub Category: Wire, Cable ...

Holley is now offering budget friendly fabricated intake manifolds for LS, Small Block Chevy and Small Block Ford engines in carbureted and EFI versions!Features: Silver finish creates high impact under-hood styling 3mm (1/8") thick T6061 sheet al...

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 H...

This L5P tuning package supplies the programming interface, licensing and ECM calibration for owners sourcing their exhaust and EGR hardware separately. Vehicle fitment 2017–2026 Chevrolet Silverado and GMC Sierra 2500HD/3500HD pickups with 6.6L D...

When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life easier! The new Holley EFI Filter Regulator assembly...

This harness provides a plug and play upgrade solution for those seeking to convert to Coil-On-Plug. Additionally we have pre-installed a Power Tap for easy access to 12v, 5v Reference, and Sensor Grounds. The Ford MPFI C-O-P Main Harness has also...

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 cylind...

The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. ...

The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. ...