We have re-engineered the cooler with a different cooling bundle configuration that uses copper tubes instead of the stainless steel from the OEM to improve the cooling of the engine's glycol. We have also added a machined lip to assure there is no problem with sealing to the cover. The rest of the cooler is stainless steel and coated with an engine enamel for durability. This is a drop in replacement. Please call us before ordering this part. This part cannot be returned. These parts are made to order. A discount is available for orders of 2 or more. Warranty is 1 year commercial and 2 year pleasure. Read Less