This oil cooler was designed specifically for Harley-Davidson to out-perform all other coolers in the industry. The cooler features a unique "Turbulator" system that evenly distributes oil across the cooling chambers. The air fins are designed to efficiently dissipate heat. The oil cooler has been designed to simplify installation and enhance performance. The large heat exchanger provides excellent cooling efficiency. The kit features a one-piece adapter plate with integrated thermostat that allows oil lines to connect to the oil filter bracket. Thermostat activates at 185°F (85°C). Kit comes complete with mounting hardware and precut oil lines.