Precision Works Billet TGV Housing Subaru WRX 01-07 & STi 08-17

Precision Works Billet TGV Housings – 2001–2007 Subaru WRX / 2008–2017 STI

Improve airflow and clean up the intake side of your Subaru EJ build with the Precision Works Billet TGV Housing Kit. Designed as a performance replacement for the restrictive factory TGV assemblies, these housings provide a smoother, higher-flow path between the intake manifold and cylinder heads while retaining compatibility with factory-style fuel rail mounting locations.

Each housing is precision-machined from 6061-T6 billet aluminum using a 5-axis CNC process, providing excellent consistency, strength, and fitment. An anodized silver finish adds corrosion resistance while giving the engine bay a clean, purpose-built appearance.

Whether you're upgrading the fuel system on a street car or putting together a higher-boost EJ build, these housings provide a solid foundation without forcing you into a completely custom fuel rail arrangement.

Features
CNC-machined from billet 6061-T6 aluminum
Designed to replace the restrictive factory TGV housings
Improved airflow path to the cylinder heads
Precision 5-axis CNC machining
Anodized silver finish
Retains factory fuel rail mounting points
Compatible with both 11 mm and 13 mm injectors
Supplied as a matched pair
Includes O-ring gaskets and installation hardware
Excellent choice for upgraded turbo and high-flow EJ builds
Injector & Fuel Rail Compatibility

One of the biggest advantages of this version of the Precision Works TGV housing is its flexibility when putting together your fuel system.

The housings support both:

11 mm injectors
13 mm injectors

They also retain the factory fuel rail mounting locations, allowing you to build the fuel system around compatible OEM-style or aftermarket fuel rail configurations without requiring a completely custom mounting solution.

Always verify injector and fuel rail compatibility with the rest of your fuel system before installation.

What's Included

Each kit includes:

Two Precision Works billet TGV housings
O-ring gaskets
Installation hardware
Vehicle Fitment

Designed for:

2001–2007 Subaru WRX
2008–2017 Subaru STI
Built for Modified EJ Applications

As airflow and power demands increase, reducing unnecessary restrictions in the intake tract becomes increasingly important. Replacing the factory TGV assemblies with a purpose-built billet housing provides a cleaner path into the cylinder heads while giving you additional flexibility when selecting injectors and fuel-system components.

These are a great addition to builds using upgraded turbochargers, larger intercoolers, higher-capacity injectors, aftermarket fuel systems, built engines, or other modifications intended to substantially increase airflow and horsepower.

For street, track, drag, or other performance-oriented EJ builds, the Precision Works Billet TGV Housings provide a straightforward way to upgrade the factory intake runner assemblies with a strong, precision-machined solution.

Professional installation and proper ECU calibration are recommended when modifying the TGV, intake, or fuel system.