OVERVIEW Holley's 2-Piece LS valve covers are a great way to update the look of your LS engine without the use of complicated adapter systems or the hassle of remote coil relocation. These...

If you are adding nitrous or boost to your 2010-2015 Camaro race car, Holley has the fuel pump upgrades for you! The fuel pump module design starts with a billet pump flange assembly and connects it...

If you are adding nitrous or boost to your 2010-2015 Camaro race car, Holley has the fuel pump upgrades for you! The fuel pump module design starts with a billet pump flange assembly and connects...

• This in-tank fuel pump module is a high-pressure unit that flows 255 liters per hour (LPH) and is capable of supporting electronic fuel injection (EFI) engines producing up to 550 horsepower ...

Do you need to upgrade your ignition system due to a recent Sniper EFI installation, but have no idea which option is best? Introducing HyperSpark Ignition, from Sniper EFI. The complete system...

2005-2016 GM Gen III/IV LS LS2 LS3 Vortec Truck & SUV Ignition Coil Sub Harness ***SOLD INDIVIDUALLY*** 2005 - 2016 LS/Vortec Coil Sub-Harness (GEN III/IV) Features: OEM connectors provide...

Holley's complete accessory systems for LT4 and LT5 applications have all accessories pulled up and in tight. Plus, they add the much needed hydraulic power steering solution. There are no...

GM Tuned Port / Holley Steathram Engine Harness

This harness is designed for LS1/6 Engines, from 1997-2004. This harness interfaces with 24x Crank and 1x Cam sensors.

This harness has been designed to interface with 58x crank and 4x cam sensors. These engines are commonly found in 2006+ Year Model vehicles with LS variants such as the: LS2,LS3,LS7,L76,L92, and L98...

Holley's new 6.86" Pro Dash delivers over 200 monitoring channels of reliable real-time data in a more compact, full HD package suitable for nearly any motorsports application. Be assured that...

Trust. Whether it's your engine builder, team members or EFI System, trust is earned, not given. When your expensive engine, sponsorship and reputation are on the line, trust your engine monitoring...