CSF BMW E36 M3 / 3-Series / E30 3-Series High-Performance All-Aluminum Radiator

With over five decades of expertise in radiator manufacturing, CSF stands as a trusted leader in automotive cooling solutions. The CSF BMW E36 M3 / 3-Series / E30 3-Series High-Performance All-Aluminum Radiator exemplifies this legacy, delivering exceptional cooling performance tailored for both street and track applications. Engineered to meet the rigorous demands of high horsepower engines and motorsports environments, this radiator ensures optimal thermal management, thereby enhancing engine reliability and longevity.

At the core of this radiator’s superior performance is CSF’s exclusive B-Tube Technology. Unlike conventional oval-shaped “O” tubes, the innovative “B” shaped tubes are meticulously formed and seam-brazed to create a robust, leak-resistant structure. This advanced design allows the use of thinner, lighter aluminum material without compromising strength, resulting in improved heat dissipation efficiency. The B-Tube configuration 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. This design also facilitates dual liquid laminar flow, optimizing coolant movement and heat exchange.

Complementing the B-Tube core, the radiator incorporates ultra-efficient multi-louvered fins with a precise 6.5mm fin height. These fins are carefully aligned to maximize airflow through the core, enhancing heat rejection. Each fin specification is meticulously engineered and validated through rigorous wind-tunnel testing to ensure maximum cooling efficiency tailored for the specific vehicle application.

The CSF radiator is designed as a true “drop-in fit” replacement, requiring no modifications for installation. It features CNC-machined and welded OE-style brackets, ensuring exceptional durability and precise fitment. The inlet and outlet connections are engineered to match original equipment specifications, allowing seamless integration with OEM hoses or aftermarket components. This compatibility extends to all attaching parts, including quick-connect hoses, AC condensers, mounting brackets, and fan shrouds, preserving the vehicle’s factory setup and simplifying installation.

Key Features

• 2-Row 42mm Core (Dual Core) incorporating CSF’s proprietary B-Tube Technology for enhanced structural integrity and cooling efficiency
• Ultra-efficient multi-louvered fins with 6.5mm fin height, precisely engineered to maximize surface area and airflow
• CNC-machined “quick-connect” inlet and outlet connections ensuring reliable and secure hose attachment
• CNC-machined brackets and fittings crafted for superior fitment and long-lasting durability
• All-aluminum race-style drain plug designed for ease of maintenance and corrosion resistance
• Smooth satin finish providing a professional appearance and corrosion protection
• True “drop-in fit” design compatible with all OEM components, including quick-connect hoses, AC condenser, mounting brackets, and fan shroud, facilitating straightforward installation without modifications

Vehicle 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.