CSF Race Spec Dual Pass Oil Cooler for BMW E46 M3
Upgrade your BMW E46 M3 oil cooling with the CSF Race Spec Dual Pass Oil Cooler. This is the ultimate E46 M3 oil cooler upgrade for track, fast road and spirited driving. Developed with Rogue Engineering and engineered by CSF, this performance oil cooler is a true drop-in, OEM replacement that dramatically improves reliability and consistency of oil temperatures on the S54-powered E46 M3. If you are searching for a CSF E46 M3 oil cooler, dual pass oil cooler, performance oil cooler or bar and plate E46 M3 oil cooler, this is the proven choice.
Why choose this E46 M3 oil cooler
The factory single-pass cooler is a known bottleneck on hard-driven E46 M3s. CSF’s unique top and bottom dual-pass design increases surface area and flow for superior heat rejection, helping maintain stable engine oil temperatures and protecting the S54 on track days and spirited road drives. We have fitted and used this E46 M3 oil cooler ourselves and our customers have been consistently impressed with the cooling performance, fitment and durability.
Key features
- Designed, developed and track-proven with Rogue Engineering for the BMW E46 M3 S54 platform
- Dual-pass top and bottom layout replaces the OEM single-pass cooler for maximum surface area and flow
- True drop-in fit, no modifications required, accepts factory oil line connections for an easy OEM-style install
- Fully TIG-welded extruded end tanks for superior strength and long-term durability compared to OEM mechanically jointed units
- Heavy-duty bar and plate core with turbulated passages and high-density multi-louvred fin pitch for efficient, reliable cooling
- Eight-row performance core optimised for track and fast road use
- Precisely follows the OEM bumper contour and works cleanly with aftermarket splitter attachments
- Compatible with OEM radiator brackets or CSF’s all-aluminium triple-pass radiator (CSF #7058)
- Motorsport silver finish
Perfect fitment for the BMW E46 M3
Built specifically for the S54 E46 M3, this CSF oil cooler is a plug-and-play, direct replacement for the standard cooler. It accepts factory oil line connections and uses the OEM mounting points, so installation is straightforward while delivering the benefits of a high-performance dual pass oil cooler. Ideal for anyone searching for an E46 M3 upgraded oil cooler that fits like OEM but performs like a motorsport part.
Construction and reliability
The CSF Race Spec oil cooler uses a fully TIG-welded, extruded end tank design and a robust bar and plate core. This construction is chosen for durability under high heat and pressure, making it one of the most reliable E46 M3 oil coolers for track-day and performance driving. The multi-louvred, high-density fin pack and turbulated passages maximise heat transfer while maintaining excellent flow.
Compatibility
BMW E46 M3 with S54 engine. Works with OEM radiator brackets and pairs perfectly with the CSF all-aluminium triple-pass radiator (CSF #7058).
Fitting and support
Professional installation recommended. For fitting, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com and our team will be happy to help.
Buy with confidence from Nforcd
We supply and fit performance parts for BMW M models and have first-hand experience with the CSF Race Spec Dual Pass Oil Cooler on the E46 M3. Customers report excellent oil temperature control, consistent performance and faultless fitment. If you want a reliable, track-proven, dual pass E46 M3 oil cooler that installs like OEM and performs like a motorsport upgrade, this CSF unit is the answer.
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