Fuel System

A wedged float is a necessity for the circle racer. The wedge is designed so that when you are in a turn, and the fuel has sloshed up the side of the bowl, the fuel will ride up the wedge and allow...

Two Accelerator Pump Discharge Nozzles. Hole Size Straight Type Includes 4 Gaskets and 2 Nozzle Screws Genuine Holley Quality Parts

Calibrating the right air/fuel mixture is important to gain proper power and efficiency from your carburetor and engine. But for vehicles running E85 fuel, proper calibration is difficult if you...

Introducing the Holley EFI 8 Channel CANBus EGT Kit. Exhaust Gas Temperature data is critical information when your engine tune up is on the ragged edge. Knowing the exhaust temperature of each...

Holley's EFI Crank Trigger Kit is engineered to provide an accurate crank speed & position signal to Holley EFI systems in the most-demanding, high horsepower, racing applications. Crank position is...

Holley EFI HP and Dominator Cable Saver 18-10008 The achilles heel of the very popular Holley EFI HP and Dominator system is the Mini USB port which is easily damaged.  Tripping over the cable,...

The Terminator X Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The...

Fuel Bowl Screws, 2.5 in Long, Hex Head, Gaskets, Steel, Cadmium, Holley 4150 Carburetors, Set of 8

Fuel Bowl Sight Plug & Gasket Kit Standard Replacment Two Gaskets Fits All Holley Carburetors Two Brass Sight Plugs

These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimeters per minute" and are changeable for tuning purposes. The shape of the entry,...

Single-Stage Power Valve High Flow  Includes Gasket

An improved jet extension design that actually screws into the metering block. The main metering jet then threads into the end of the extension. The installation effectively moves the fuel entry...