CSF 08-14 Subaru WRX & STI w/ built-in Oil Cooler All-Aluminum Radiator

With over five decades of expertise in radiator manufacturing, CSF stands as a trusted leader in high-performance cooling solutions. The CSF 08-14 Subaru WRX & STI All-Aluminum Radiator with built-in oil cooler is engineered to maintain optimal engine temperatures, ensuring your vehicle performs reliably under both street and track conditions. This radiator is an essential upgrade for high horsepower builds and race vehicles that demand superior cooling efficiency in rigorous motorsports environments.

At the core of this radiator lies a 2-Row 42mm design featuring CSF’s proprietary B-Tube Technology. Unlike conventional oval-shaped "O" tubes, CSF’s "B" shaped tubes are precision-engineered and seam-brazed to create a stronger, lighter, and more thermally efficient structure. This innovative design increases the heat transfer surface area by approximately 15% compared to standard tubes, effectively delivering the cooling capacity of two smaller tubes within the same spatial constraints. The dual liquid laminar flow achieved through these B-tubes enhances coolant circulation, further optimizing heat dissipation.

Complementing the advanced tube design are ultra-efficient multi-louvered fins, meticulously aligned to maximize airflow through the radiator core. Each fin’s dimensions and configuration are carefully calculated and validated in CSF’s wind tunnel testing facility to ensure maximum heat rejection performance. This attention to detail results in a radiator that excels in both thermal management and durability.

The CSF WRX/STI radiator offers a true “drop-in fit” installation, requiring no modifications to your vehicle. All brackets are CNC machined and welded to OE specifications, providing superior strength and longevity. The inlet and outlet connections are designed to match original equipment manufacturer (OEM) fittings, allowing seamless integration with existing OEM hoses or compatible aftermarket components. This ensures a hassle-free upgrade while maintaining the integrity of your vehicle’s cooling system.

Key Features

• 2-Row 42mm Core (Dual Core) incorporating CSF’s Exclusive B-Tube Technology for enhanced heat transfer and structural strength
• Ultra-efficient fin design with 6.5mm fin height and multi-louvered pattern to maximize surface area contact and airflow
• CNC machined “Quick-Connect” inlet and outlet connections for precise fitment and ease of installation
• CNC machined brackets and fittings engineered for exceptional durability and exact OE compatibility
• All-aluminum race-style drain plug for reliable fluid drainage and maintenance
• One-hour “Mirror Finish” hand polish providing superior corrosion resistance and aesthetic quality
• “Drop-in fit” design that accepts all OEM attaching components including quick connect hoses, AC condenser, mounting brackets, and fan shroud without modification

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