CSF 14-18 Subaru Forester High-Performance All-Aluminum Radiator

The CSF 14-18 Subaru Forester High-Performance All-Aluminum Radiator is engineered to meet the demanding cooling needs of both the 2.5L naturally aspirated and the 2.0L turbocharged engines. Designed specifically for off-road and overlanding applications, this radiator addresses the increased thermal stress that arises from challenging terrains, heavy gear loads, and steep inclines. Factory radiators often fall short in maintaining optimal engine temperatures under such conditions, especially on turbocharged models, making the CSF radiator a critical upgrade for reliable performance and engine longevity.

CSF brings a proven legacy of manufacturing high-performance, heavy-duty radiators tailored for off-road vehicles. The original equipment cooling systems frequently experience overstrain due to the strenuous demands placed on the engine during off-road use and the accumulation of dirt and debris within the cooling fins. The risk of radiator failure in remote locations is a serious concern, and this product is designed to mitigate that risk through superior construction and enhanced cooling efficiency.

At the heart of this radiator is a robust 2-Row 42mm aluminum core, which not only increases the coolant capacity but also significantly improves heat dissipation. CSF’s proprietary B-Tube Technology enhances heat transfer by approximately 15% compared to conventional oval welded tubes, ensuring superior thermal management. Complementing this technology, the multi-louvered fins are engineered to maximize airflow through the core, optimizing cooling efficiency even at lower speeds typical of off-road driving. Because off-roading often relies heavily on fan-assisted airflow rather than natural air movement, the enhanced core design is pivotal in maintaining safe engine temperatures.

The end tanks of the radiator are fabricated from high-grade aluminum and are TIG welded to the core, providing exceptional structural integrity and durability. This contrasts with the OEM design, which uses plastic end tanks crimped onto the core, a configuration more prone to failure under stress. The all-aluminum construction ensures long-lasting performance and resistance to the harsh conditions encountered during off-road use.

Installation is straightforward and user-friendly, as the CSF radiator is designed as a true plug-and-play, drop-in replacement. No modifications, trimming, or cutting are necessary, preserving the vehicle’s original configuration and simplifying the upgrade process.

Features

• 2-Row - 42mm Heavy-Duty Ultra-High-Performance Dual Pass Core for enhanced cooling capacity
• Cooling Tubes incorporating CSF's Exclusive B-Tube Technology for approximately 15% improved heat transfer
• 6.5mm Tall Ultra Efficient Fins with a Multi-Louvered Design to maximize surface area contact and airflow
• CNC Machined Mounting Brackets and OEM Style Inlet/Outlet for precise fitment and durability
• 100% All Aluminum TIG-Welded Construction ensuring superior strength and longevity
• 1-Hour "Mirror Finish" Hand Polish for corrosion resistance and aesthetic refinement
• True Plug-and-Play "Drop-in Fit" Installation requiring absolutely no modifications
• Individually Leak and Pressure Tested to guarantee reliability under demanding conditions
• 2-Year Limited Warranty for peace of mind and product assurance

Applications

OEM Part Numbers

• Subaru: 45111SG010
• Subaru: 45111SG000

Warranty

Cooling Systems and Flexibles, Inc. (CSF) stands behind the quality and reliability of its High-Performance Cooling Systems. Under normal use and service, CSF warrants this radiator to the original purchaser of the vehicle in which it was originally installed. For comprehensive warranty details, please visit our Warranty Page.

SKU# 7209 Warranty Term: 2 years

In summary, the CSF

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.