Mishimoto MMRT-WRX-01EBK Aluminum Coolant Expansion Tank - Black for 2002-2007

Vehicle Fitment

• 2002-2007 Subaru WRX (2.0L H4 turbo, AWD)
• 2004-2016 Subaru WRX STI (2.5L H4 turbo, AWD)
• 2004-2006 Subaru Baja Turbo; 2008 Forester XT 2.5L; 2005 Forester XT Premium/Limited
• 2005-2006 Saab 9-2X Aero

Features

• TIG-welded aluminum construction for superior durability
• Barb-style fittings - leak-resistant and OEM-cap compatible
• 50 % more coolant capacity than stock plastic tank
• Anodized black finish for race-inspired aesthetics
• Matches Mishimoto aluminum radiator for cohesive engine bay look
• Direct-fit - no modifications or cutting required
• Includes mounting bracket, hardware, reinforced hose
• Backed by Mishimoto's Lifetime Warranty

Specifications

• Material: 100 % TIG-welded aluminum
• Finish: black anodized (other colors available separately)
• Fitment without radiator cap issues - compatible with OEM radiator cap
• Fluid capacity: approx. 776 cc (~50 % over stock) :contentReference[oaicite:0]{index=0}
• Dimensions: ~159 mm W x 98 mm H (6.25" x 3.85") :contentReference[oaicite:1]{index=1}
• Weight: approx. 6.5 lb :contentReference[oaicite:2]{index=2}
• Barb fittings - ensure tight, OEM-level hose seal

Included Components

• 1x Aluminum expansion tank (black anodized)
• 1x Mounting bracket
• 1x Reinforced hose
• Barb fittings
• Clamps & mounting hardware
• Installation instructions
• 1x Mishimoto Lifetime Warranty card

Product Description

The Mishimoto MMRT-WRX-01EBK black anodized aluminum coolant expansion tank is a direct-fit upgrade for numerous Subaru models (2002-2007 WRX, 2004-2016 STI) plus select Foresters, Baja Turbos, and Saab 9-2X Aer0s. Manufactured from durable TIG-welded aluminum, it resists cracks and failures common in aging stock plastic tanks while providing a 50 % larger coolant reservoir to help reduce boilover during high-heat conditions.

Designed to bolt in place with OEM-compatibility and barbed fittings, this tank requires no modifications or trimming during installation. It also integrates seamlessly with Mishimoto's aluminum radiator, offering a sleek and cohesive performance look. The included mounting kit and reinforced hose make installation straightforward and clean. Weighing around 6.5 lb, it's both lightweight and robust.

Perfect for enthusiasts seeking reliability and engine-bay aesthetics, this tank is ideal for daily drivers, rally builds, track vehicles, or lifted rigs running tough. Backed by Mishimoto's Lifetime Warranty and verified fitment across multiple sources, the MMRT-WRX-01EBK ensures long-term confidence and enhanced cooling performance.