Radium Engineering Fuel Feed Line Kit | 2015-2021 Subaru WRX (20-0266)

The FA20 WRX's factory feed line was budgeted for stock boost, not for what comes next.

The Radium Engineering Fuel Feed Line Kit for the 2015-2021 Subaru WRX upgrades the fuel supply path on the FA20 DIT platform: replacing the restrictive factory feed routing with high-flow hose and proper fittings between the chassis hard line and the engine's fuel system, built from components resistant to all fuel types including E85. The supporting upgrade that lets pump and rail investments actually deliver.

What You'll Feel

• The feed path no longer the quiet restriction in an upgraded FA20 fuel system
• All-fuel confidence through the line, E85 blends included
• Purpose-selected fittings replacing improvised adapters at every junction
• A clean, factory-quality install following the chassis routing

Features

• Upgraded fuel feed line kit for the 2015-2021 WRX (FA20 DIT)
• High-flow hose and fittings resistant to all fuels including E85
• Interfaces the chassis fuel supply with the engine-side fuel system
• Complements Radium pump hanger and fuel system upgrades on the platform

The Details

Fuel systems fail at their narrowest point, and on the 2015+ WRX the factory feed plumbing becomes that point once pump upgrades raise the available flow: the direct-injection FA20's HPFP can only pressurize what the low-pressure side delivers, making the feed line the bridge between in-tank capability and engine-side demand. This kit rebuilds that bridge with hose and fittings rated for the duty, installing along the factory routing. Pair it with a Radium WRX pump hanger upstream and the platform's fueling picture completes. Standard install disciplines apply, with quick connect O-rings lightly oiled and AN flares installed dry, hand tight plus 1/4 to 1/2 turn.

Kit Includes

• Fuel feed hose and fittings for the 2015-2021 WRX (20-0266)

Applications

• 2015-2021 Subaru WRX (FA20 DIT)
• Complements Radium fuel pump hanger installations