Oil is the lifeblood of an engine, and in a hardworking diesel engine like the 2008 - - 2010 6.4L Powerstroke, keeping that oil cool is essential to the engine's health and running. The stock 2008 - - 2010 Powerstroke liquid - to - liquid oil cooler uses engine coolant to draw heat away from the oil and vent it through the engine radiator. It's a stout design that typically performs well for daily driven trucks. However, after over 10 years of service, many of those stock coolers have seen better days. A clogged or leaking oil cooler can reduce the oil's ability to transfer heat to the coolant, causing thinning and a loss of protection for critical engine components. That's why Mishimoto is proud to offer a stock replacement 2008 - - 2010 Ford 6.4L Powerstroke oil cooler. This replacement cooler, complete with new seals and O - rings will restore your 6.4L Powerstroke's oil cooling and protect your engine from unnecessary wear. This cooler is a direct fit and provides all the cooling a daily driven 6.4L needs at an affordable price point. For even more protection, check out our 2008 - - 2010 Ford 6.4L Powerstroke Coolant Filter Kit. Like all Mishimoto 6.4L Powerstroke products, this stock replacement oil cooler is backed by our Mishimoto Lifetime Warranty for a lifetime of worry - free driving.