Dinan High Capacity Oil Cooler Kit for BMW 3 Series E90 335i N54 (3.0 Twin-Turbo) - Direct Fit OE Location Oil Radiator Upgrade - For Cars Without Factory/OE Cooler - Standard Front Bumper | Performance Track Cooling

Dinan High Capacity Oil Cooler System for BMW E90 335i N54 - Standard Front Bumper - For Cars Without OE Cooler

Keep your N54-powered E90 335i performing at its best with Dinan’s high capacity engine oil cooling system. This premium, direct-fit package replaces the small factory heat exchanger with a significantly larger uprated oil radiator in the original mounting position, delivering outstanding temperature control, consistent power, and confidence on spirited road drives and track days. Designed specifically for vehicles that were supplied without the original oil cooler and fitted with the standard front bumper, it is the reliable solution to tame heat soak and avoid limp mode when you push on.

Proven performance benefits

• Approximately double the volume of the stock unit for stronger thermal stability
• 414 square inches of cooling tube area versus 112.5 square inches on the factory core for a dramatic increase in heat rejection
• Integrated inlet ducting to maximise airflow across the core
• Enlarged outlet directing more hot air to the wheel arch to improve evacuation
• OEM-style installation in the stock location for a clean, professional finish
• Lightweight convoluted PTFE hoses with a durable polyester outer braid
• Motorsport-grade fittings for durability and leak-free operation

On the road or during extended sessions, stable oil temperatures protect the N54’s twin-turbo straight-six and help maintain consistent performance. This Dinan system is a proper bolt-on upgrade that addresses the heat management weak point on cars without the factory cooler, helping prevent power fade and safeguarding engine longevity when driving hard.

What you get

• High capacity oil cooler core engineered for the E90 335i N54 platform
• Purpose-built inlet ducting and enlarged outlet for efficient airflow
• PTFE braided lines and high-quality fittings
• Vehicle-specific hardware for a tidy, stock-like fit

Real-world feedback

We have installed and run this package on customer 335i builds and the results are consistent: lower and more stable oil temps, stronger performance over long stints, and peace of mind on hot days. It simply works.

Compatibility

BMW 3 Series E90 335i with the N54 engine, standard front bumper, and cars delivered without the original oil cooler. If you are unsure about your bumper type or whether your vehicle had the OE heat exchanger, contact us and we will confirm suitability before ordering.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. Request a fitting quote: info@mjmodifications.co.uk

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