Process West Subaru WRX & STI (GD/GG)

• Front mount intercooler kits – bumper-mounted cores with matched piping for GD Bugeye, Blobeye and Hawkeye variants.
• Top mount intercoolers – bonnet-scoop-fed replacements for the factory TMIC, offered in black finish.
• Cold air intakes – standard and 72mm versions for GD WRX and STI.
• Silicone hoses and Y-pipes – including the silicon Y-pipe listed for GD and GRB/GVB STI.
• Hood scoop splitters – variant-specific splitters to direct air to a top mount core.
• TGV deletes and engine dress-up – billet tumble generator valve delete kits, dual injector TGV deletes and engine pulley garnishes.

The GD (sedan) and GG (wagon) chassis codes cover the 2001–2007 Impreza WRX and STI. Australian market build codes seen in these listings include GDA and GGA for the WRX and GDB for the STI.

• Bugeye – round headlight cars, roughly MY01–MY02.
• Blobeye – MY03–MY05 facelift.
• Hawkeye – MY06–MY07 facelift.

Bonnet scoop size and bumper shape differ between these facelifts, so check the exact variant named in each product title before ordering. Some items also specify an engine family such as EJ20 or EJ25, and others are listed for use alongside a particular Process West intercooler or intake manifold. If your car has been modified from standard, confirm clearance with any existing aftermarket parts.

Most of these parts require removal of the front bar, bonnet scoop, intake ducting or intake manifold, and several involve draining or disturbing coolant and fuel system components. Typical requirements include metric spanners and sockets, screwdrivers, hose clamps, a torque wrench and, for manifold or TGV work, fresh gaskets and thread sealant where specified by the manufacturer.

Installation by a professional workshop is recommended. Where a part alters airflow, boost routing or fuel delivery, a tune by a qualified tuner may also be required.

Q: Will a GD front mount kit fit my Bugeye and Hawkeye?
A: No – the kits are listed separately by facelift, so choose the one that names your variant.

Q: Do I need a hood scoop splitter with a top mount intercooler?
A: A splitter is listed as a separate item and is used to direct scoop air across the core; check the product title for your variant.

Q: Are these parts made in Australia?
A: Process West is an Australian brand; refer to the individual product page for manufacturing details.