Product Fitment:
2002-2007 Subaru WRX
2004-2007 Subaru STI
The IAG Performance Aluminum Coolant Expansion Tank is engineered for Subaru builders seeking a clean, race-inspired engine bay. Designed to relocate the coolant expansion tank to the passenger side front strut tower, this tank frees up critical space on the intake manifold—ideal for rotated turbo kit setups on 2004–2007 Subaru WRX and STI models.
Key Features:
Optimized for Race Builds:
Relocates the expansion tank to the passenger-side strut tower, creating space for rotated turbo piping and custom setups.
Durable All-Aluminum Construction:
Made from 1/8" thick sheet metal aluminum, waterjet cut, precision bent, and TIG welded for maximum strength and reliability.
AN & Barb Fittings Pre-Welded:
-8 AN turbo coolant return fitting
-8 AN drain outlet fitting
0.25" barb fitting for overflow
Designed to accommodate high-performance plumbing needs.
Clean Appearance with Custom Finish:
Powder-coated in black or red with a laser-engraved IAG logo for a professional, finished look.
Direct Mounting Solution:
Includes integrated mounting brackets and hardware for a secure and straightforward installation.
Cap Compatibility:
Designed to reuse your OEM coolant expansion tank cap.
Includes:
(x1) IAG Custom Aluminum Expansion Tank (Black or Red)
(x2) Mounting Bolts
Installation Notes:
Requires custom hoses and fittings – not compatible with OEM hoses
Not compatible with COBB airbox
May require relocation of boost solenoid valves
Professional installation recommended
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