On air cooled engines, having a oil cooler will serve many benefits! Morin Complete oil cooler kit will not only help keep the engine oil cool, which will also cool the engine, but it will also extend the engine life! Morin includes everything that is needed to make this oil cooler kit a true bolt on application! Highly recommended for big bore engines! Included with the kit is a extended head stud that will allow oil to flow from the cylinder oil passage to the oil cooler. Then after the oil cooler, the cooled oil will return to the head.