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 Year Range Make Chassis Code Model Trim Engine / Trans / Etc Notes 2018-2023 Subaru GT Crosstrek – 2L H4 – 2018-2023 Subaru GT Crosstrek Convenience 2L H4 – 2018-2020 Subaru GT Crosstrek Limited 2L H4 – 2021-2023 Subaru GT Crosstrek Limited 2.5L H4 – 2021-2023 Subaru GT Crosstrek Outdoor 2.5L H4 – 2018-2023 Subaru GT Crosstrek Premium 2L H4 – 2018-2020 Subaru GT Crosstrek Sport 2L H4 – 2021-2023 Subaru GT Crosstrek Sport 2.5L H4 – 2018-