Compatible with 5.9L Cummins [Non-Common Rail] - DK Engine Parts Oil Cooler Kit . This is an aftermarket oil cooler that replaces the OEM style oil cooler. Our parts will meet the specifications and productivity of genuine parts. All parts come with a minimum of a 1-year warranty. If a problem occurs at the fault of the parts, we will replace the parts at no charge to the customer. This kit contains: One Oil Cooler Oil Cooler and 3 Gaskets.