Aluminum Coolant Expansion Tank
InfoVehicle Info Needed
MISHIMOTOPART NUMBER: 690-MMRT-WRX-01E

Aluminum Coolant Expansion Tank

$18895
ShippingShips on 09/08/2026
Lowest PriceLowest Price Guarantee

Subaru
LGT/WRX/STI
    Aluminum Coolant Expansion Tank
  • 2002-2007 Subaru WRX
  • 2004-2016 Subaru WRX STI
  • Polished Aluminum Finish
  • MFG p/n MMRT-WRX-01E

    Features:
  • Direct fit for the 2002-2007 Subaru WRX and 2004-2016 Subaru WRX STI
  • 50% greater capacity than stock plastic expansion tank
  • 100% aluminum, fully-welded construction for maximum durability during repeated cold and hot transitions
  • Leak-free welded barb fittings
  • Fits with stock and Mishimoto radiator caps
  • Polished aluminum finish matches the Mishimoto Subaru WRX/STI Performance Aluminum Radiator
  • Mishimoto Lifetime Warranty





    Superior Styling Over Stock Tanks

    Add some reliability and engine bay styling to your vehicle with an aluminum expansion tank from Mishimoto. All Mishimoto Expansion Tanks feature internal baffles to prevent coolant starvation from overflow ports on the engine. Also, during high-speed cornering, braking, and acceleration, the internal baffles reduce coolant sloshing. The engineers at Mishimoto have included a sight tube to allow for proper observation of hot and cold coolant levels, making engine maintenance much easier.

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    Eventually, you’ll have to consider the health of your plastic expansion tank. Plastic is prone to failure after years of constant temperature exchange cycles. Each Mishimoto tank is constructed from durable, TIG-welded aluminum for optimal durability and longevity. All Mishimoto tanks reuse the stock expansion tank cap.

Part TypeCoolant Overflow and Recovery Tank
Product LineMishimoto Aluminum Coolant Expansion Tanks
BrandMISHIMOTO
Package Height6.5
Package Width8.6
Package Length8.9
Weight2.16 PG
Part CategoryPerformance Parts
Part FitmentDirect Fit
Vendor Part NumberMMRT-WRX-01E
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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