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Air and Fuel› Air and Fuel Cooling Systems and Components

Percussion West

Top Mount Intercooler with Silicone Y-Pipe

$1,101.00 $1,035.93 Save $65.07

SKU: PRW PWTMIC06B

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Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Process West top mount intercooler is a direct-fit replacement designed for 2008-2021 Subaru STI models. It utilizes a large bar and plate core measuring 530mm x 193mm x 90mm to improve thermal efficiency by reducing charge temperatures in vehicles running higher boost or larger turbochargers.

This upgrade kit includes a custom silicone Y-pipe to ensure even air distribution from the turbo compressor outlet. The system serves as a direct replacement for the factory component.
Show original supplier description
The Process West top mount intercooler is a performance-focused cooling solution engineered as a direct replacement for the OEM unit in 2008-2021 Subaru STI vehicles. By incorporating a high-capacity bar and plate core measuring 530mm x 193mm x 90mm, this intercooler is specifically designed to manage increased thermal loads associated with larger aftermarket turbochargers and higher boost pressures, helping to prevent heat soak and maintain consistent power delivery. Central to the performance of this kit is the included silicone Y-pipe. While standard aftermarket Y-pipes often suffer from uneven airflow distribution due to their structural design, the Process West Y-pipe is specifically sculpted to provide balanced charge air delivery across the entire surface area of the intercooler. This improvement ensures that the full cooling potential of the core is utilized. As a direct-fit replacement, this unit maintains a factory-style mounting configuration, simplifying the installation process. It serves as an essential upgrade for Subaru owners seeking to optimize their induction system efficiency and thermal management.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandPercussion West
Part NumberPRW PWTMIC06B
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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