Radium Engineering

The best Radium Engineering parts for a turbocharged Subaru start with a catch can kit. PCV and dual catch can kits for the WRX and STI trap oil vapor before it reaches the intake tract. From there, Radium's fuel system hardware — V2 fuel pump hangers and fuel rail plumbing kits — supports bigger power goals.

Radium Engineering machines its parts from billet aluminum for cars that get driven hard. This collection covers their core Subaru lineup: PCV and dual catch can kits with Fluid Lock caps, master cylinder braces that firm up brake pedal feel, V2 fuel pump hangers for high-flow pumps, and parallel fuel rail plumbing kits for EJ-series builds.

What to look for: pick the catch can kit made for your engine — FA20DIT/FA24 WRX kits differ from EJ STI kits, and listings note the year range. Fuel pump hangers are hardware only, so budget for the pump itself. All products here are Radium Engineering.

Browse related collections: Fuel Systems and Oil System. Popular picks include the Radium Engineering [22-26 WRX] Catch Can Kit PCV, the Radium Engineering [15-21 WRX] Dual Catch Can Kit, the Radium V2 Fuel Pump Hanger, and the Radium Fuel Rail Plumbing Kit (Parallel). Also read our guide on whether aftermarket parts affect your warranty.

Do I need a tune after installing a catch can?

No — a catch can doesn't change airflow metering or fueling, so it installs without a tune. Fuel system upgrades like pump hangers and rail kits pair best with a tune once you're making more power.

Which catch can kit fits my WRX?

The [15-21 WRX] and [22-26 WRX] kits are engine-specific, so match the kit to your car. Dual kits cover both PCV and crankcase sides; single PCV kits cover the most common problem area.

Does the fuel pump hanger include the pump?

No — the V2 fuel pump hanger is hardware only and does not include pumps. The listing names the compatible high-flow pumps, so order the pump separately.

How hard is installation?

Catch can kits are a straightforward driveway job with basic hand tools, usually under two hours. Fuel pump hangers and rail plumbing kits involve the fuel system — depressurize the lines and work in a ventilated space.