Victory Product Design - BMW E46 Competition Oil Cooler Kit. After successfully building oil cooler kits for the E36 engines we have developed a kit for the E46 6 cylinder engines. This is a must have for anyone that races or has a high horsepower application and needs the added security of having cool engine oil. About the Kit - The kit is designed to be a bolt on component that is easily installed.As oil is the lifeblood to your engine, keeping it cool will reduce viscosity breakdown and prevent premature wear. With the oil cooler kit this is accomplished by routing the engine oil from the standard oil filter housing to an externally mounted aluminum radiator mounted below the front bumper. To prevent high pressure losses to the radiator, large inside diameter (.50 inch) stainless steel braided hoses are used. Anodized Aluminum aircraft style connectors are used to join the hoses at both ends. To prevent damage to surrounding rubber hoses, an abrasion resistant cover is used.At the heart of the system is our race proven billet aluminum adapter cap (patent pending) that features two large diameter ports in the top for routing oil to and from the oil cooler. A third auxiliary 1/8" NPT port can be used for mounting an oil pressure/temperature gage or routing oil to a turbo or supercharger. When it comes time to change your oil, no special filters are required as the kit uses a standard BMW filter. Added protection to the radiator and hoses is achieved by having the engine oil filtered upon leaving the adapter cap. This is a small but important feature in the unforeseen event that an engine fails and sends metal particles into the oil pan, thus eliminating the added cost of replacing the radiator and oil lines. How much temperature drop will you see?Temperature drops will typically range from 12-30 degrees depending on ambient and driving conditions. The kit comes with stainless steel braided hoses with anodized aluminum fittings, a custom billet machined filter adapter, standard BMW oil filter, high performance Setrab radiator, abrasion resistant overbraid cover, and all mounting fasteners, and instructions.