CSF MK6 Ford Fiesta ST High-Performance All-Aluminum Radiator

The 1.6L EcoBoost engine of the Ford Fiesta ST is renowned for delivering remarkable power relative to its size, making the vehicle an exhilarating drive. However, the stock cooling system has historically presented challenges, with overheating issues arising even under standard operating conditions. To address these concerns effectively, the installation of a High-Performance All-Aluminum Radiator from CSF is highly recommended.

With over five decades of expertise in radiator manufacturing, CSF stands as a leader in delivering superior cooling solutions. The CSF High-Performance All-Aluminum Radiator is engineered to maintain optimal engine temperatures, ensuring that your Fiesta ST performs reliably whether on the street or the racetrack. This radiator is indispensable for vehicles with high horsepower builds and race cars that demand enhanced cooling capabilities under strenuous motorsport conditions.

At the core of this radiator lies a 2-Row design incorporating CSF's proprietary B-Tube Technology. Unlike conventional oval-shaped "O" type tubes, the B-Tubes are precision-engineered in a distinctive "B" shape. These tubes are meticulously formed and seam-brazed to guarantee a robust seal. This innovative design permits the use of thinner, lighter aluminum material while simultaneously enhancing cooling efficiency. The B-Tube configuration increases the heat transfer surface area by approximately 15% compared to traditional tubes, effectively delivering the cooling performance of two smaller tubes within the same spatial constraints. Additionally, the B-Tubes facilitate dual liquid laminar flow, optimizing coolant movement through the radiator.

Complementing the advanced tube design, CSF employs ultra-efficient multi-louvered fins that are precisely aligned to maximize airflow through each radiator core. The fin specifications are carefully calculated and validated through rigorous testing in CSF’s wind-tunnel laboratory to ensure maximum heat rejection efficiency.

The CSF Fiesta ST radiator is engineered as a true "Drop-in fit" component, requiring no modifications for installation. All brackets are CNC machined and welded to OEM standards, ensuring superior durability and fitment. The inlet and outlet connections are designed to be compatible with original equipment manufacturer (OEM) hoses as well as aftermarket options, facilitating straightforward integration. By choosing CSF, you entrust your vehicle’s cooling system to industry experts committed to delivering the highest quality, most reliable radiators on the market.

Product Details

Design & Engineering

CSF collaborated with leading EcoBoost specialists to develop a radiator upgrade tailored to the specific demands of the Fiesta ST platform. This partnership was driven by the need to resolve the elevated coolant temperature issues reported by numerous customers, particularly those operating high-performance racing engines. The resulting radiator is optimized for both performance and fitment, and it is now available globally through CSF’s extensive dealer and distributor network.

Although engineered to accommodate super high-performance race engines, the benefits of upgrading to the CSF radiator extend to all Fiesta ST owners. Even modest power enhancements or aggressive driving can overwhelm the factory cooling system, leading to overheating. The CSF radiator provides a robust solution designed to maintain optimal operating temperatures under diverse driving conditions.

CSF vs OEM

The original equipment (OE) radiator supplied by Ford features a plastic tank and a single-row aluminum core, a configuration that has proven insufficient for drivers who push their Fiesta ST hard. Even routine driving in hot climates can result in overheating. Given the thermal demands of turbocharged engines like the 1.6L EcoBoost, maintaining controlled coolant temperatures is essential for engine longevity and consistent performance.

The CSF radiator features a 31mm thick aluminum core, representing a substantial improvement over the factory 24mm core. This increased thickness, combined with superior tube and fin design and greater fluid capacity, significantly enhances the radiator’s ability to absorb and dissipate heat. CSF’s Exclusive B-Tube Technology further elevates heat transfer efficiency by approximately 15% compared to conventional oval welded tubes. The multi-louvered fins are engineered to maximize airflow, thereby optimizing cooling performance.

Constructed entirely from 100% TIG-welded aluminum, CSF radiators exhibit superior strength and durability. This construction method not only enhances the radiator's structural integrity but also extends its service life, providing Fiesta ST owners with a reliable cooling solution that endures over time.

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.

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