R35 GT-R can suffer from high differential oil temperatures when under high load conditions such as circuit driving. High differential oil temperature may affect the lubrication properties of the oil and/or the LSD’s performance. HKS Diff Oil Cooler Kit was developed to solve these problems. HKS Diff Oil Cooler can maintain the differential oil temperature, LSD performance and prevent the oil degradation.

Features:
・ Oil Cooler Core Size: 200×132×48 (Cooling Fin). This core was designed specifically for R35.
・ Core installation position is inside the rear under cover. With a special air duct, it can let air into the core and cool it efficiently.
・ The air duct is made of CFRP to match the factory rear under cover.
・ Highly durable AQP Racing Hoses are used for oil piping.
・ HKS original Oil Pump is included in the kit for reliable operation and accurate oil flow maintenance.
・ Relay box, harnesses, and ON/OFF switch to install the oil pump are included in the kit.



In-house test was conducted in Fuji International Speedway. The test result showed that the differential oil temperature dropped by approximately 37℃. The result also showed that the DCT oil temperature dropped by approximately 5℃, and coolant temperature by approximately 3℃.