Process West Silver Top Mount Intercooler w/ Shroud Subaru Forester XT 2004-2008

Product Fitment:

2004-2008 Subaru Forester XT

Note: 2004-2005 Forester XT Owners will need a 2002-2005 WRX style blow off valve and recirculation hose to use this intercooler.

The Process West Top Mount Intercooler Kit is engineered to improve cooling efficiency, reduce heat soak, and deliver more consistent performance for the Subaru Forester XT.

Rather than simply increasing intercooler size, Process West designed the core, splitter, and Y-pipe as a complete system to maximize airflow and charge-air distribution.

Key Features & Benefits

• High-efficiency 90mm bar-and-plate intercooler core
• Vehicle-specific splitter directs airflow across 100% of the core
• High-flow moulded silicone Y-pipe
• Improved charge-air distribution across the full intercooler
• Helps reduce intake temperatures and heat soak
• Supports more consistent throttle response and power under load
• Complete system designed for proper airflow and cooling efficiency

Optimized 90mm Core

Process West uses a 90mm core rather than the thicker 114mm designs found on some aftermarket intercoolers. Because air entering a top-mount system must make a sharp turn through the hood scoop, excessive core thickness can restrict airflow.

The 90mm design balances cooling capacity with airflow efficiency, allowing ambient air to move effectively through the core.

Full-Core Airflow

A larger intercooler provides little benefit if the factory ducting only directs air across part of the core. Process West addresses this with a custom-sized splitter designed to direct ambient airflow across the entire intercooler surface.

High-Flow Silicone Y-Pipe

The included Process West silicone Y-pipe is engineered to distribute compressed air evenly across the full width of the intercooler core, helping maximize cooling efficiency and reduce uneven flow.

Proven Performance

Back-to-back testing on a 2005 Subaru WRX showed:

• Process West system: 115.5 kW
• Factory intercooler: 107.5 kW
• Process West peak outlet temperature: 51°C
• Factory peak outlet temperature: 66°C

During repeated testing, the factory intercooler reached 84°C after three consecutive runs.

Real-world mountain driving showed an even greater difference:

• Process West system: maximum 43°C
• Factory intercooler: 72°C and still climbing

What's Included

• Process West 90mm top mount intercooler
• Vehicle-specific intercooler splitter
• High-flow silicone Y-pipe
• Required mounting hardware and fittings