The Aeroflow Subaru oil cooler delete stud is designed to remove the original oil cooler unit completely. This will allow the use of a aftermarket oil cooler with a aftermarket sandwich adapter. The oil filter adapter allows the oil filter to screw directly to the cylinder block if you dont wish to run any oil cooler. This kit will require a 2 pipe outlet water pump or a 5/8" silicone block off cap must be purchased to block off the unused water pipe. This stud replaces the OEM Subaru part number 15010AA090. Made from Stainless Steel.