CSF uses new technology packed into a compact two-row design for better cooling capacity without the added weight. More efficient B-tubes have greater surface area for cooling (15% cooling capacity increase in fin technology alone) and a precision multi-louvered fin to increase heat rejection performance and surface area contact. Additionally, this CSF part has more total cooling tubes, and due to the efficient B-Tube shape, airflow through the core is improved as well. These technical features all contribute to improved cooling efficiency over OE-type performance upgrades, as well as other standard “performance” aluminum tanked radiators which are nothing more than aluminum tanks on a traditional stock core.Made in Indonesia in the same factory that produces CSF parts for aftermarket and car line production for several European cars. This part is a much higher level of quality than the typical Chinese factory parts. All CSF radiators come with a two year warranty against defects in craftsmanship.
Replace your old, dried out factory radiator hoses with the COBB Tuning Silicone Radiator Hoses. Constructed of 3-ply reinforced silicone, these hoses will not only look better but also last longer. Silicone hoses have a higher operating temperature range, making them a must for any car that may see extended periods of aggressive driving or track time. COBB branding is found at both ends of the hose.
Keep your engine cooler by upgrading to the COBB 1.1 Bar Coolant Reservoir Cap. This higher pressure cap increases the effective boiling temperature of the coolant in your vehicle’s cooling system. The higher temperature allows the cooling system to absorb more heat. The cap increases pressure and does allow temperature to go up about 10 degrees before fluid boils, but does not reduce temperature. Avoiding boiling makes head gasket failure less likely.
Use the 1.1 Bar Coolant Reservoir Cap for the coolant expansion tank which sits atop the intake manifold on every turbocharged Subaru we support.
The Subaru Cooling Kit includes the CSF 2-Row Subaru Aluminum Radiator, Silicon Radiator Hoses, and COBB 1.1 Bar Coolant Reservoir Cap for 2008-2014 WRX and 2008-2018 STI.
CSF 2-Row Subaru Aluminum Radiator
Silicon Radiator Hoses
COBB 1.1 Bar Coolant Reservoir Cap