HKS Oil Cooler Kit. The K20C engine generates 320ps with 2.0 displacement; therefore, the vehicle is equipped with a water-cooled oil cooler to stabilize the extreme high engine output. However, under circuit driving, the temperature of both oil and water rise sharply because adequate heat radiation cannot be obtained, and fail safe mode becomes activated. Adding HKS air cooling type oil cooler kit provides high heat exchange efficiency to suppress the temperature rise not only of the oil but also the water. HKS oil cooler kit includes a special aluminum air guide. Newly developed 48mm wide 9-layer oil cooler core and special air duct to extract the maximum performance are utilised and mounted to the inside of the inner fender. The oil pump’s pulsation noise generated by increase of engine rotation sometimes transmits to the vehicle interior through the high pressure-resistant stainless mesh hose. HKS oil cooler kit has the insulator to substantially reduce this pulsation noise. The attachment has a thermostat to restrain excessive cooling of the part. Vehicle modification required to install this kit is minimised. (Modification of back of the bumper, inner fender, and brake duct are only required.)