Mishimoto Performance Aluminum Radiator Manual Transmission

2002-2007 Subaru WRX/STI

Ships for free in the 48 states

SKU: MMRAD-WRX-01We price match!

Out of Stock


  • All aluminum construction
  • Improves the cooling efficiency
  • Direct replacement for your OEM unit
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Mishimoto Performance Aluminum Radiator Manual Transmission


  • The full aluminum construction is highly robust
  • Your OEM radiator has plastic upper and bottom tank sections that are the breaking points due to multiple heat cycles and soft construction
  • Because these are all aluminum, they can easily be repaired by a fabricator if there ever should be a leak
  • Improves the overall cooling efficiency in hot climates, high-performance driving conditions, or stop-and-go traffic
  • More than likely be the last radiator you will have to purchase



  • Full aluminum construction provides increased heat and pressure tolerance, improved heat dissipation, increased durability, and improved cooling efficiency
  • Manufactured with TIG-welded end tanks for improved strength and extended service
  • 100% brazed aluminum core for maximum reliability
  • Increased coolant capacity directly results in improved cooling efficiency
  • Included 1.3 BAR radiator cap raises the boiling point of engine coolant to provide a safer and more efficient system
  • Designed to original equipment specifications



  • The radiator cap provided with this particular radiator should replace the stock cap that is located n the expansion tank
  • Your factory issued/stock radiator cap should be the one used on the Mishimoto Radiator
  • The Mishimoto radiator cap is a two-way valve, and when compared to the stock single valve, there is a difference in construction, and cannot be used on the radiator
  • If you try to use the provided Mishimoto cap on the radiator, then you risk overheating



As our beloved 02-07 WRX and STI models are showing their age, the OEM radiator may have seen better days and that's why you're here. The OEM radiator has upper and lower plastic tanks that endure multiple heat cycles and will expand under pressure. Eventually, a hairline crack will happen and will only get worse and leave you stranded when you've overheated. Take care of the problem before it gets worse. The Mishimoto unit features all-aluminum construction and a thicker core to improve the cooling efficiency while being one of the last, if not the last radiators you will buy. This is a direct drop-un unit to be an excellent replacement for your OEM unit. 

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