Koyo presents a top - notch full aluminum radiator. It's a perfect fit for multiple Subaru models including the STI (2008 - 2021), WRX (2008 - 2021 with manual transmission), Legacy GT (2005 - 2012 with manual), Impreza (2008 - 2011 with manual), Crosstrek (2013 - 2017 with manual), Forester XT (2009 - 2013 with manual), and Outback XT (2005 - 2009 with manual). The radiator features a core depth of 1.41', height of 13.38', and width of 26.65', weighing 12.1 pounds. Note that the radiator cap is not included. It offers true plug - and - play installation, no engine modifications needed, and retains mounts for stock fan shrouds and fans. Hand - crafted heliarc welds strengthen aluminum connections. Precise tube and fin alignment ensure optimal coolant flow and efficient heat transfer. The upper radiator hose may need trimming for clearance. We recommend the Koyo SK - C13 radiator cap, though the OE cap will also work. For automatic transmission owners, this radiator lacks an internal transmission cooler, so an auxiliary cooler is required for installation.
Using this Koyo radiator is easy. First, make sure your car matches the fitment details we've provided. When installing, since it's a plug - and - play design, you can simply fit it in without modifying the engine. Just keep in mind that you may need to trim the upper radiator hose for proper clearance. As for the radiator cap, you can use the recommended Koyo SK - C13 or an OE cap. If you have an automatic transmission, don't forget to get an auxiliary transmission cooler. For maintenance, regularly check the coolant level. Inspect the radiator for any signs of leaks or damage. Clean the fins gently to keep the heat transfer efficient. And that's all you need to know to keep your radiator in great shape and your car running smoothly.
