CSF 2nd Gen Crosstrek / 5th Gen Impreza High-Performance All-Aluminum Radiator

The CSF 2nd Gen Crosstrek / 5th Gen Impreza High-Performance All-Aluminum Radiator is engineered to meet the rigorous demands of both everyday driving and challenging off-road conditions. Designed specifically for the Subaru Crosstrek and Impreza models equipped with the 2.0L (FB20) and 2.5L (FB25) naturally aspirated engines, this radiator addresses the increased thermal loads encountered during activities such as off-roading and overlanding. These conditions often impose additional strain on the engine due to factors like traction loss, steep inclines, and the extra weight of gear, resulting in elevated operating temperatures that can exceed the cooling capacity of the factory radiator.

To ensure optimal engine performance and reliability, CSF developed this high-performance radiator featuring a robust 42mm 2-row aluminum core. This design significantly enhances the radiator’s fluid capacity, enabling more efficient heat dissipation. A key innovation incorporated into this radiator is CSF’s exclusive B-Tube Technology, which improves heat transfer efficiency by approximately 15% compared to conventional oval welded tubes. Complementing this, the radiator employs super-efficient multi-louvered fins that maximize airflow through the core, further optimizing cooling performance.

Effective cooling is essential in off-road scenarios where vehicle speeds are generally lower, and the radiator relies heavily on fan-assisted airflow rather than natural air movement. While factory fans provide a reasonable airflow, it is typically less than what is experienced during city driving. The larger and more efficient core of the CSF radiator ensures that engine temperatures remain within safe operating limits, even under demanding conditions. Additionally, the increased core size offers improved resilience when the radiator is exposed to dust, dirt, or mud, common in off-road environments. Although any radiator’s efficiency may be compromised under such conditions, having a greater overall cooling capacity mitigates the risk of overheating.

Durability and structural integrity are paramount in this design. The radiator’s end tanks are crafted from high-grade aluminum and are TIG welded directly to the core, providing superior strength and eliminating common failure points associated with OEM radiators that use crimped plastic end tanks. This all-aluminum construction not only enhances durability but also contributes to efficient heat transfer and long-term reliability.

Installation is straightforward and user-friendly, as the CSF radiator is engineered as a true plug-and-play, drop-in replacement. This means no modifications, trimming, or cutting are required, facilitating a seamless upgrade to your vehicle’s cooling system without the need for specialized tools or expertise.

Features

• 42mm Thick 2-Row Ultra-High-Performance Aluminum Core for Enhanced Cooling Capacity
• Cooling Tubes Utilizing CSF’s Exclusive B-Tube Technology for Approximately 15% Improved Heat Transfer
• 6.5mm Tall Multi-Louvered Fins Designed to Maximize Surface Area and Airflow Efficiency
• CNC Machined Mounting Brackets and OEM-Style Inlet/Outlet for Precise Fitment
• 100% All-Aluminum Construction with TIG Welding for Superior Strength and Durability
• Smooth Satin Finish Providing Corrosion Resistance and Aesthetic Appeal
• True Plug-and-Play “Drop-in Fit” Installation Requiring No Modifications
• Individually Leak and Pressure Tested to Ensure Quality and Reliability
• Backed by a 2-Year Limited Warranty for Peace of Mind

Applications

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.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.