CSF B-Tube Aluminium Performance Radiator for BMW 1/2/3/4 Series (F20 F21 F22 F23 F30 F31 F34 GT F32 F33 F36 Gran Coupe) & i3 - Automatic Transmission - Direct-Fit Drop-In Upgrade

Regular price: £744.00
Sale price: £744.00
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

CSF Aluminium Performance Radiator - BMW F20 F21 F22 F23 F30 F31 F34 GT F32 F33 F36 Gran Coupe Auto - i3

Looking for a serious BMW radiator upgrade for fast road and track use? The CSF aluminium performance radiator delivers proven cooling performance and durability for F-series BMWs. This direct-fit, drop-in radiator is designed for automatic transmission models and is also listed for the BMW i3. If you push your car hard on track days, spirited B-road drives or hot summer commutes, this CSF radiator upgrade is a must-have for stable coolant temperatures and long-term reliability.

Why choose the CSF radiator for your BMW cooling upgrade

All-aluminium construction - TIG welded from high quality military grade aluminium for strength and reliability
Industry-first B-Tube technology - maximised surface area and heat rejection for superior performance
Aerodynamically engineered to OE radial specifications - optimised airflow and cooling efficiency
Direct-fit, drop-in replacement - no modifications required, uses factory mounting points
ISO 9002 engineered and validated - leak, thermal cycle, burst pressure, vibration and wind tunnel tested
Handcrafted by master-class welders - finished with CSF’s proprietary Sho-Stopper mirror polish
Built for real-world performance - ideal for drag, drift, circuit, off-road, track, rally and daily use
Designed for automatic transmission applications

Compatibility - BMW F-Series and i3

This CSF aluminium radiator is noted for the following applications:

BMW 1 Series - F20, F21
BMW 2 Series - F22, F23
BMW 3 Series - F30, F31, F34 GT
BMW 4 Series - F32, F33, F36 Gran Coupe
BMW i3

Application note - Auto transmission. If you are unsure about fitment for your specific model, please contact us.

Nforcd recommended

We have fitted and run CSF radiators on our own builds and customer cars with excellent results. Customers consistently report rock-solid temperature control, outstanding build quality and a premium finish that lasts. If you want a reliable BMW cooling upgrade that performs on track and on the road, CSF is the benchmark.

Installation and fitting

Direct replacement for the factory radiator - no cutting or trimming required. Professional fitting available at Nforcd in Warwickshire. Request a fitting quote: Sales@nforcd.com.

Built to perform

Whether your BMW is a tuned daily, fast road build or track day weapon, this CSF performance radiator provides the cooling headroom you need. Stable coolant temps help protect your engine during hard driving, hot weather, heavy traffic and repeated heat cycles. Choose CSF for a durable, high-performance aluminium radiator that is engineered to handle demanding conditions.