CSF Aluminium/Aluminum Performance Radiator Upgrade/Replacement for BMW E36 3 Series (1992-1999) – Direct-Fit Cooling for M3, 328i, 325i, 323i – High-Efficiency B-Tube Alloy Core, Metal End Tanks

Proven alloy cooling upgrade for BMW E36

Keep coolant temperatures under control on road, track and in traffic with this CSF high-efficiency alloy heat exchanger for the BMW 3 Series E36, including M3. This direct-fit unit is a serious step up from the factory plastic-tank radiator, delivering stronger construction, better heat rejection and long-term reliability. Ideal for fast-road builds, drift cars and track-day use, yet perfect for daily drivers who want peace of mind.

Why enthusiasts choose this CSF radiator

• Direct replacement for BMW E36 six-cylinder models with no cutting or fabrication required. Uses the original fan shroud, hose positions and mounting points for an easy swap.
• Welded aluminium end tanks replace fragile plastic, solving the common crack-and-leak issue as temperatures cycle and pressure rises.
• CSF B-tube dual-channel core technology for increased surface area, excellent heat transfer and improved strength over conventional single-oval tubes.
• High-efficiency, thicker core for greater cooling capacity while utilising thin, lightweight materials to keep mass down.
• Factory-style provisions for the European oil cooler, making it ideal for performance builds and endurance use.
• Engineered in the USA and validated with wind tunnel, vibration, thermal cycle, burst pressure and salt spray testing.
• Each unit is individually pressure-checked and passes a comprehensive multi-point inspection before shipping.
• Backed by CSF’s two-year warranty and OE-grade manufacturing standards.

We’ve installed this upgrade on customer E36s and seen consistently stable temps, quicker heat dissipation after hard pulls and excellent resilience during extended sessions. It is a genuine fit-and-forget solution that inspires confidence.

Best for

• BMW E36 radiator upgrade for track days, drifting and spirited driving
• Reliable replacement for ageing factory cooling systems
• E36 M3 alloy rad for improved durability and performance

Vehicle compatibility

BMW 3 Series E36 1992 to 1999:

• 323i, 323is, 323ic
• 325i, 325is, 325ic
• 328i, 328is, 328ic
• M3 1995
• M3 1996 to 1999

Installation and fitting

Want it fitted professionally with fresh coolant and a proper bleed? Book in with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote.

Note: due to the higher capacity core, clearance is tighter than stock on some fan setups. This is normal for performance radiators.

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