MMR Performance BMW M3 E90/E92 S65 4.0 V8 S65B40 Oil Cooler - Uprated Oil Radiator/Heat Exchanger - Direct-Fit Bolt-On Plug and Play Replacement - High Capacity Track Day & Fast Road E9X Cooling Upgrade

Uprated Oil Radiator for BMW M3 E90 and E92 4.0 V8

Keep your E9X M3’s lubrication temperatures under control with this MMR uprated oil radiator. Built for the BMW 4.0‑litre V8, it delivers stable temperature management for spirited road use and circuit work, helping protect engine health and maintain consistent performance session after session.

We have installed and run this cooler on our own cars and customer builds with excellent results. Owners report more consistent oil temps, improved confidence on hot days and reduced heat‑related performance drop during repeated hard laps.

Key benefits

• Stronger thermal control for demanding driving, track days and fast B‑road use
• Designed to mount in the stock location for a straightforward bolt‑on replacement
• Helps protect the S65’s lubrication system under sustained high rpm and load
• High quality construction for durability and long service life
• Ideal as a heavy‑duty alternative to a tired or leaking factory oil radiator

Who is it for

• Drivers who push their M3 hard on circuit, sprints and time attack
• Fast road enthusiasts seeking consistent temperature control
• Cars with exhaust, intake or ECU upgrades that generate extra heat
• Owners replacing an ageing stock heat exchanger

Vehicle compatibility

• BMW M3 E90 Saloon 4.0 V8
• BMW M3 E92 Coupe 4.0 V8

Why buy from us

We know these cars and this hardware. This MMR unit is a proven upgrade for E90 and E92 models, delivering dependable oil temperature management during hard use without compromising everyday drivability. It is the smart choice for anyone looking to future‑proof their S65 for road and track.

Installation

Professional fitting recommended. Book expert installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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