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CSF Radiators

CSF 3055 BMW E46 3 Series & Z4 E85 All-Aluminum Race Radiator – M52 M54 N52 – Fits 320i 323i 325i 328i 330i, Z4 2.2i 2.5i 3.0i – Direct-Fit Performance Upgrade

CSF 3055 BMW E46 3 Series & Z4 E85 All-Aluminum Race Radiator – M52 M54 N52 – Fits 320i 323i 325i 328i 330i, Z4 2.2i 2.5i 3.0i – Direct-Fit Performance Upgrade

£480.00
£480.00 £480.00
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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 3055 Alloy Cooling Radiator for BMW E46 and Z4 E85

Unlock consistent coolant control for your six‑cylinder BMW with the CSF 3055 all‑aluminium performance radiator. Purpose built for M52, M54 and N52 powered cars, this uprated cooler is the go‑to solution for fast road builds, track day use and hard‑driven daily drivers that demand stronger thermal management and reliability.

Why enthusiasts choose CSF 3055

  • Full aluminium construction with robust welds for long‑term durability under heat and vibration
  • High density tube and fin core designed to maximise heat rejection and airflow at speed
  • Engineered for OE mounting points for a true drop‑in, plug‑and‑play install with standard hoses
  • Stabilises coolant temps during spirited driving, traffic, and extended sessions on circuit
  • Ideal as an uprated replacement for tired factory units or as the foundation of a complete cooling package
  • Developed by CSF, a proven global specialist in high performance cooling with decades of experience

We have run this unit on our own builds and customer cars with excellent results. Expect fast recovery between pulls, reduced heat soak and dependable performance in demanding conditions. It is a fit‑and‑forget upgrade that supports reliability on tuned setups and stock vehicles alike.

Fitment and applications

Engines: M52, M54, N52

  • BMW 3‑Series E46 1997–2006
    • 320i, 323i, 325i, 328i, 330i
  • BMW Z4 E85 Roadster 2002–2008
    • 2.2i, 2.5i, 3.0i

Part number

CSF 3055

Installation

Straightforward drop‑in replacement using factory mounts and OEM coolant hoses. For professional fitting, contact MJ Modifications in Warwickshire for a quote at info@mjmodifications.co.uk.

Compatibility check

We will confirm fitment before dispatch. Add your registration or the last 7 of your VIN at checkout to ensure you receive the correct cooler for your vehicle.

What this upgrade delivers

  • Improved cooling capacity for E46 and E85 platforms used on track days and spirited road driving
  • Better temperature stability in hot weather, traffic and on long climbs
  • Confidence for mapped engines and performance builds seeking extra thermal headroom

Search terms customers use

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