PERRIN Top Mount Intercooler (TMIC) – 2008–2021 Subaru STI | Black

Eliminate heat soak and unlock more consistent power from your EJ257-powered Subaru STI with the PERRIN Top Mount Intercooler. The factory STI TMIC is a well-known restriction point — its limited core volume and inefficient design allows intake charge temperatures to climb rapidly under sustained boost, robbing power and increasing knock risk. PERRIN's TMIC replaces the factory unit with a significantly larger, more efficient intercooler core in a direct-fit package, delivering dramatically lower charge air temperatures and more consistent power output across repeated pulls and track sessions. Black powder coat finish for a clean, stealthy underhood appearance.

Key Features

• Significantly Increased Core Volume: Larger intercooler core than the factory STI TMIC — dramatically improved cooling capacity for lower charge air temperatures and reduced heat soak under sustained boost
• More Consistent Power: Lower, more stable intake charge temperatures translate to more consistent power output across repeated pulls, track sessions, and spirited street driving
• Direct Fit: Engineered as a direct replacement for the factory 2008–2021 Subaru STI top mount intercooler — uses OEM mounting points and connections for a straightforward installation
• Black Powder Coat Finish: Durable black powder coat finish for a clean, stealthy underhood appearance
• 2008–2021 STI Coverage: Fits the GR/GV (2008–2014) and VA (2015–2021) Subaru WRX STI chassis with the EJ257 engine
• PERRIN Quality: Manufactured by Perrin Performance — a trusted name in Subaru performance parts with decades of STI-specific engineering experience

Specifications

• Type: Top Mount Intercooler (TMIC)
• Finish: Black Powder Coat
• Fitment: 2008–2021 Subaru WRX STI — EJ257 (GR/GV and VA chassis)
• Installation: Direct OEM Replacement
• Part Number: PSP-ITR-302BK

Note: An ECU tune is strongly recommended after intercooler installation to take full advantage of reduced charge air temperatures and optimize boost and fuelling for the new intercooler. Professional installation recommended. Verify fitment for your specific STI chassis and build before ordering.