CSF 08-14 Subaru WRX / STI / 15-21 WRX 1-Row 31mm High-Performance Radiator - Black

With over five decades of specialized experience in radiator manufacturing, CSF stands as a leader in delivering high-quality cooling solutions. The CSF 08-14 Subaru WRX / STI / 15-21 WRX 1-Row 31mm High-Performance Radiator in black is engineered to meet the demanding cooling requirements of both street and track environments, ensuring your Subaru performs at its peak under all conditions.

This radiator is designed with a focus on durability, efficiency, and seamless integration. It features a 2-Row core utilizing CSF’s proprietary B-Tube Technology, which distinguishes it from conventional radiators that employ oval-shaped "O" tubes. Instead, CSF’s "B" shaped tubes are precision-formed and seam-brazed, allowing the use of thinner and lighter aluminum that enhances cooling efficiency without compromising structural integrity. 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 enabled by the B-tubes optimizes coolant circulation, which is critical for maintaining engine temperatures during high-performance operation.

Complementing the advanced core design, the radiator incorporates ultra-efficient 6.5mm tall multi-louvered fins. These fins are meticulously aligned to maximize airflow through the core, enhancing heat dissipation. Each fin specification is carefully calculated and validated through rigorous testing in CSF’s wind-tunnel laboratory, ensuring optimal thermal performance and reliability.

The CSF WRX/STI radiator is a true "Drop-in fit" component, engineered to require no modifications during installation. This ensures a straightforward replacement process, preserving the original vehicle setup. The mounting brackets are CNC machined and welded to provide exceptional strength and durability, while the inlet and outlet connections are designed to match OEM specifications. This compatibility allows for the reuse of original hoses or aftermarket alternatives, offering flexibility and convenience for the installer.

Key Features

• High-Performance Core with CSF’s Exclusive B-Tube Technology for Enhanced Cooling Efficiency
• Ultra-Efficient 6.5mm Tall Multi-Louvered Fins Maximizing Surface Area Contact and Airflow
• 100% All-Aluminum TIG-Welded Construction Ensuring Durability and Lightweight Design
• CNC Machined Mounting Brackets for Precise Fitment and Long-Term Reliability
• Innovative "Multi-Fit" Combo Pipe and Plug Design Included for Versatile Installation
• True "Drop-in Fit" Design Requiring No Modifications for Easy Installation
• Individually Leak and Pressure Tested to Guarantee Quality and Performance
• Black Finish Providing a High-End Stealth Appearance
• Designed for Manual Transmission Applications Only
• Supersedes CSF Part Number #7028

This radiator is suitable for a wide range of Subaru models, including but not limited to the 2008-2014 WRX and STI, as well as the 2015-2021 WRX. Its robust design and precise engineering make it an ideal upgrade for enthusiasts seeking improved cooling performance in both daily driving and competitive motorsport scenarios.

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.