Universal fit
No vehicle selection needed.
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Vehicle fitment
This part is listed to fit the following vehicles.
In Melbourne? Fit it in our workshop.
We fit parts in-house at the RevZone workshop. Book a time and bring your car in.
Description
Designed for use with the 2002 STI high-flow bonnet scoop.
The goal for the Process West Top Mount Intercooler was simple: engineer the best-performing aftermarket top-mount on the market. By fixing the common aftermarket failures, like poor ducting and inefficient core thickness, we built a cooling solution that sets a new standard for the Subaru platform.
The critical factor: proper ducting
A common mistake is supplying a larger intercooler without the ducting to support it. With the factory shroud in place, roughly half of an upgraded core sees no ambient airflow. This kit includes a custom-sized splitter so the whole core receives direct ambient air.
Optimal core thickness: 90mm
Many competitors push 114mm (4.5") cores on a 'bigger is better' pitch. For a top-mount, where air makes a sharp 90 degree turn through a bonnet scoop, too much thickness just creates resistance. Our 90mm (3.5") core lets the air breathe through it instead of hitting a wall, for lower outlet temps and more consistent power.
High-flow silicone Y-pipe
Standard aftermarket Y-pipes often favour one side of the core. Our custom-moulded silicone Y-pipe gives even charge-air distribution across the entire entry tank.
Proven performance
- Power: 115.5kW, up from the factory 107.5kW (back-to-back on an '05 WRX)
- Dyno outlet temp: 51 degrees C peak vs 66 degrees C stock
- Three back-to-back heavy-load runs: factory climbed to 84 degrees C; the PW unit stayed far more stable
- Spirited mountain driving: stock peaked at 72 degrees C and kept climbing; the PW system never exceeded 43 degrees C
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.