Fuel System Components

Fuel System Components: Move Enough Fuel to Match the Power You're Building

The job of fuel system components is simple to state and unforgiving to get wrong: deliver enough clean fuel, at stable pressure, to feed the injectors under load. When you add boost, a bigger turbo, or run flex fuel, the stock pump and lines often can't keep up, and you lean out where it hurts. The parts in this category address that chain - lift pumps, in-tank fuel hats, pressure kits, flex-fuel upgrades, and complete fuel system packages that swap the weak links together instead of one at a time.

What ThreePiece stocks

There are 49 products here from 13 brands, priced from $14 to $1,841 - the current range for what's in stock, not a standing offer. Radium Engineering leads the count, followed by Fleece Performance, with TwinPower, Industrial Injection, AirDog, Snow Performance, COBB, BD Diesel, Fuelab, Sinister Diesel and Skunk2 Racing also represented.

Coverage runs from model years 1978 through 2024. Of the products carrying fitment data, common applications include the Subaru WRX, Cadillac CTS, Toyota Supra, Chevrolet Camaro, Chevrolet Silverado, GMC Sierra, Ford Powerstroke and Harley-Davidson Big Twin and XL. Diesel trucks are well covered - Silverado and Sierra 2500/3500 and Ford Powerstroke show up repeatedly.

How to choose

Pick by how far you're going. If you want one boxed solution, a complete package like the COBB 08-21 Subaru STI Fuel System Package or the COBB WRX CAN Flex Fuel Upgrade with Fuel Pressure Kit pairs the pump and pressure hardware so you're not guessing at compatibility.

For diesel trucks, lift-pump-based kits like the Fleece Performance Dodge Cummins Upgrade Kit with PowerFlo Lift Pump and the Fleece Powerstroke PowerFlo kit feed the injection pump reliably at higher flow. For high-horsepower gas trucks, a multi-pump fuel hat such as the Snow Performance F150 Xtreme 3-pump hat or the Snow Performance GM Half-Ton triple-pump hat gives you serious in-tank capacity. The trade-off is straightforward: full packages and triple-pump hats cost more up front but leave less to source separately; single components are cheaper if you already have the rest.

What else you need with it

Plumbing rarely comes complete. Plan for Fittings and Adapters to tie hoses and rails together, and check the standalone Fuel Pumps category if you're replacing a pump alone rather than a full kit. If the engine is coming apart at the same time, Gasket Kits keep reassembly clean. All of these sit under the broader Engine Components section.

Fitment and ordering

Because only some listings carry vehicle data, confirm your year, make and model before you buy. Call fitment help at 813-535-5801 or reach us through contact us if you're unsure. All orders ship free, and Affirm and Katapult financing is available on larger kits.

Fuel System Components: Move Enough Fuel to Match the Power You're Building

The job of fuel system components is simple to state and unforgiving to get wrong: deliver enough clean fuel, at stable pressure, to feed the injectors under load. When you add boost, a bigger turbo, or run flex fuel, the stock pump and lines often can't keep up, and you lean out where it hurts. The parts in this category address that chain - lift pumps, in-tank fuel hats, pressure kits, flex-fuel upgrades, and complete fuel system packages that swap the weak links together instead of one at a time.

What ThreePiece stocks

There are 49 products here from 13 brands, priced from $14 to $1,841 - the current range for what's in stock, not a standing offer. Radium Engineering leads the count, followed by Fleece Performance, with TwinPower, Industrial Injection, AirDog, Snow Performance, COBB, BD Diesel, Fuelab, Sinister Diesel and Skunk2 Racing also represented.

Coverage runs from model years 1978 through 2024. Of the products carrying fitment data, common applications include the Subaru WRX, Cadillac CTS, Toyota Supra, Chevrolet Camaro, Chevrolet Silverado, GMC Sierra, Ford Powerstroke and Harley-Davidson Big Twin and XL. Diesel trucks are well covered - Silverado and Sierra 2500/3500 and Ford Powerstroke show up repeatedly.

How to choose

Pick by how far you're going. If you want one boxed solution, a complete package like the COBB 08-21 Subaru STI Fuel System Package or the COBB WRX CAN Flex Fuel Upgrade with Fuel Pressure Kit pairs the pump and pressure hardware so you're not guessing at compatibility.

For diesel trucks, lift-pump-based kits like the Fleece Performance Dodge Cummins Upgrade Kit with PowerFlo Lift Pump and the Fleece Powerstroke PowerFlo kit feed the injection pump reliably at higher flow. For high-horsepower gas trucks, a multi-pump fuel hat such as the Snow Performance F150 Xtreme 3-pump hat or the Snow Performance GM Half-Ton triple-pump hat gives you serious in-tank capacity. The trade-off is straightforward: full packages and triple-pump hats cost more up front but leave less to source separately; single components are cheaper if you already have the rest.

What else you need with it

Plumbing rarely comes complete. Plan for Fittings and Adapters to tie hoses and rails together, and check the standalone Fuel Pumps category if you're replacing a pump alone rather than a full kit. If the engine is coming apart at the same time, Gasket Kits keep reassembly clean. All of these sit under the broader Engine Components section.

Fitment and ordering

Because only some listings carry vehicle data, confirm your year, make and model before you buy. Call fitment help at 813-535-5801 or reach us through contact us if you're unsure. All orders ship free, and Affirm and Katapult financing is available on larger kits.