The stock liquid-to-liquid oil cooler uses engine coolant to draw heat away from the oil and vent it through the engine radiator. Its a stout design that typically performs well for daily driven trucks. However, after over 12 years of service, many of those stock coolers have seen better days. A clogged or leaking oil cooler can reduce the oils ability to transfer heat to the coolant, causing thinning and a loss of protection for critical engine components. Thats why Mishimoto is proud to offer a stock replacement compatible with the 2003-2007 Ford 6.0L Powerstroke. This replacement cooler, complete with new seals and o-rings will restore your 6.0L Powerstrokes oil cooling and protect your engine from unnecessary wear. This cooler is a direct fit and provides all the cooling a daily driven 6.0L needs at an affordable price point. For even more protection, check out our Coolant Filter Kit and Catch Can Kit also compatible with the 2003-2007 Ford 6.0L Powerstroke. Like all Mishimoto products, this stock replacement oil cooler is backed by our Mishimoto Lifetime Warranty for a lifetime of worry-free driving.