CSF 2nd Gen Subaru Forester XT (MT) High-Performance All-Aluminum Radiator - Silver

The CSF 2nd Gen Subaru Forester XT (MT) High-Performance All-Aluminum Radiator in Silver represents a pinnacle of engineering excellence and reliability tailored specifically for the demanding needs of Forester XT enthusiasts. Developed in response to direct feedback from CSF’s Australian Distributor, ProSpeed Racing, and other dealers who experienced shortcomings with alternative radiator options, this radiator embodies a commitment to superior cooling performance and durability.

With over five decades of expertise in radiator manufacturing, CSF delivers a product that ensures optimal thermal management for your Forester XT’s turbocharged 2.5L H4 engine paired with a manual transmission. Whether your driving involves spirited street performance or competitive track environments, this high-performance radiator is engineered to maintain ideal engine temperatures, enhancing both power delivery and engine longevity.

At the heart of this radiator lies a 2-row core utilizing CSF’s proprietary B-Tube Technology. Unlike conventional oval “O” shaped tubes, the B-Tube design features a uniquely engineered “B” shaped tube that is seam brazed for superior strength and heat transfer efficiency. This innovative design allows the use of thinner, lighter aluminum material while increasing the heat transfer surface area by approximately 15% compared to traditional tubes. The result is a dual liquid laminar flow that significantly improves cooling capacity within the same spatial constraints.

Complementing the advanced core design are ultra-efficient multi-louvered fins, meticulously aligned to maximize airflow through the radiator. Each fin’s dimensions and arrangement are precisely calculated and validated through rigorous wind-tunnel testing to ensure optimal heat rejection under diverse operating conditions.

Installation is straightforward and user-friendly, with a true “drop-in fit” design that requires no modifications. The CNC-machined and welded OE-style mounting brackets provide exceptional durability, while the inlet and outlet connections are engineered to match original equipment specifications, allowing seamless integration with OEM or aftermarket hoses.

Product Details

Design & Engineering

CSF’s reputation as a leading manufacturer of high-performance Subaru radiators is well established, with a history of producing private label oil coolers, intercoolers, and other cooling components for premier Subaru tuning companies. Whether your Forester XT is used for track racing, rally competition, overlanding adventures, or spirited driving on winding roads, this radiator is designed to maintain optimal engine temperatures, thereby enhancing performance and reliability.

Upgrading to this high-performance radiator is particularly critical when converting from a factory-style top-mount intercooler to a front-mount intercooler system. The front placement of the intercooler can restrict airflow and raise the temperature of air passing through the radiator, factors that can compromise cooling efficiency. CSF’s radiator addresses these challenges by providing enhanced cooling capacity to compensate for increased air restriction and elevated intake temperatures.

CSF vs OEM

The original equipment (OE) radiator supplied by Subaru features a plastic tank and a single-row aluminum core, which, while durable, is not optimized for high horsepower applications or rigorous driving conditions. Turbocharged engines such as the EJ25 generate significant heat, making effective cooling essential for engine longevity and consistent performance.

CSF’s radiator core measures 42mm in thickness with two rows, more than doubling the size of the OEM core’s 16mm single row. This increased thickness and additional cooling row, combined with a larger fluid capacity, substantially improve the system’s ability to absorb and dissipate heat. The exclusive B-Tube Technology further enhances heat transfer efficiency by approximately 15% compared to standard oval welded tubes. The multi-louvered fin design maximizes airflow, ensuring superior cooling even under demanding conditions.

Constructed entirely from TIG-welded aluminum, this radiator offers enhanced structural integrity and resistance to wear, ensuring longevity and reliability under the stresses of high-performance driving. The unit mounts directly in the factory location without any need for cutting or modification, preserving the vehicle’s original configuration.

Features

• 2-Row -

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

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