Dinan High-Capacity Engine Oil Cooler Upgrade Kit for BMW 3 Series E90 335i/335i xDrive (2011) Sedan/Saloon - Bolt-On Direct-Fit Auxiliary Oil Radiator/Heat Exchanger - Retrofit for Cars Without Factory Oil Cooler - Fits Stock/OEM Bumper

Dinan High Capacity Oil Cooling Upgrade for 2011 BMW E90 335i and 335i xDrive Saloon - suits cars without OE cooler - retains factory front bumper

Keep oil temperatures in check on your turbocharged 3 Series with this Dinan high-capacity engine oil cooling package. Designed for the 2011 E90 335i including xDrive models that were not supplied with a factory-fitted oil cooler, this direct-fit retrofit maintains the original front bumper while delivering serious thermal headroom for fast road driving and track days. If you are chasing an upgraded engine oil radiator, auxiliary oil cooler, or a bolt-on heat exchanger solution for an E90 335i saloon, this is the premium choice for reliability and consistent performance.

Proven cooling performance

• Approximately double the volume of the standard unit for lower operating temps and greater thermal stability when driven hard.
• 414 square inches of cooling tube area versus 112.5 square inches stock for a major increase in heat rejection and protection under load.
• Optimised ducting with a tidy inlet and a larger outlet venting into the wing well to maximise airflow and efficiency.
• Installs in the OE location for a clean, OEM-like finish that keeps the original front apron intact.
• Lightweight convoluted PTFE lines with a durable polyester braid and high quality motorsport-grade fittings for strength and leak-free operation.

At MJ Modifications we have fitted this system to customer cars and have been impressed with the stability it provides. Owners report steadier oil temps on hot days, less heat soak, and reduced risk of the ECU pulling power when pushed on B-roads or during circuit use.

Who is it for

• Drivers wanting a dependable E90 335i engine oil cooling upgrade that helps prevent limp mode and power fade.
• Track day regulars and spirited road users looking for a robust, direct-fit solution from a trusted brand.
• Owners who require a retrofit cooler on cars not factory-equipped, while retaining the standard bumper and tidy OE appearance.

Fitment

• BMW 3 Series E90 335i and 335i xDrive saloon
• Model year 2011
• For vehicles without an original equipment oil cooler
• Compatible with standard front bumper

Benefits at a glance

• Improved oil temperature control for engine longevity and confidence when driven hard.
• Helps mitigate heat-related power reduction.
• High-capacity heat exchanger with efficient airflow management.
• Premium hose and fitting package for durability.
• Neat, stock-location installation.

Installation

Professional fitting is recommended. MJ Modifications in Warwickshire offers expert installation and setup. Request a quote via info@mjmodifications.co.uk.

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