CSF Aluminum Performance Radiator - E9x 325, 328, 330 and Z4

Upgrade your BMW’s cooling with this CSF alloy radiator, a direct-fit, high-capacity heat exchanger for manual gearbox models. It is ideal for spirited road use, track days and fast-road builds that demand stronger, more efficient thermal management than the factory plastic-tank unit. Expect lower coolant temperatures, quicker heat dissipation and greater reliability under sustained load.

Built with a full aluminium core and welded aluminium tanks, this uprated radiator replaces the fragile plastic end tanks on the OE part. CSF’s B-tube core technology increases surface area and tube rigidity for stronger pressure resistance and superior heat rejection, while keeping weight sensible. The result is a robust cooling upgrade that copes with hard driving, hot weather and repeated pulls without the usual heat-soak.

• Direct replacement for manual transmission models
• High-efficiency all-aluminium core with CSF B-tube tech for maximum surface area
• Welded aluminium end tanks in place of OEM plastic for durability and leak resistance
• Retains factory shrouds, hoses and mounting points for an easy bolt-in install
• Engineered and developed in the USA, with wind tunnel, vibration, thermal cycle, burst pressure and salt spray validation
• Each unit individually leak tested and 30-point inspected before shipping
• Two-year warranty for peace of mind

Fitment:

• BMW 3 Series E90, E91, E92, E93 2006–2013 325i, 328i, 330i (manual)
• BMW Z4 E89 2009+ sDrive28i, sDrive30i (manual)

Notes: this high-capacity core is thicker than stock. Clearances are tighter, particularly around the expansion tank and accessory belt area, so check spacing during installation.

Why choose this upgrade:

• Stronger than stock with improved heat rejection for stable temperatures on road and track
• Ideal as a performance cooling upgrade, BMW radiator replacement, alloy radiator swap or heavy-duty radiator for E90, E92, E93 and E89 applications
• Great choice for track day cars, fast-road builds and daily drivers that see summer traffic and towing

What our customers say: we have fitted these radiators to customer cars and our own builds, and the feedback is consistently positive. Quicker recovery between sessions, less heat fade and rock-solid reliability.

Professional fitting available: MJ Modifications in Warwickshire can supply and install this cooling upgrade. For a fitting quote, email info@mjmodifications.co.uk.

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