Name: do88 BMW E46 M3 Engine Oil Cooler
Brand: DO88
SKU: OC-150
Price: 470.00 GBP
Availability: InStock

Product Description

The DO88 BMW E46 M3 Engine Oil Cooler is a DO88 fluid cooling upgrade designed to improve thermal control and durability on BMW E46 M3 applications.

Engine oil, transmission oil, DCT fluid, power steering fluid and auxiliary circuits can all be exposed to high temperatures during spirited road use, track days and motorsport environments. When temperatures rise, consistency and component protection can be reduced.

This DO88 upgrade is developed to increase cooling performance over the factory arrangement, using application-specific construction and fitment to support more stable operating temperatures under load. It is particularly useful on tuned, track-driven or endurance-focused cars where heat management is a reliability priority.

Professional installation is recommended, with correct fluid handling, leak checks and system bleeding carried out as required for the specific cooler circuit.

Key DO88 development data for this product includes 185% larger core volume; 50% larger active cooling area.

Further information below.

Key Features

185% increase in core volume
50% increase in active cooling area
79% higher oil capacity
Full aluminium construction with CNC-machined fittings
Direct fitment with OEM lines and brackets
Designed for track, endurance, and fast-road use
Plug and Play fitment: designed as a direct replacement, the do88 cooler mounts using OEM brackets and accepts factory oil lines with no modifications. Installation is straightforward and reversible, making it suitable for both dedicated track builds and dual-purpose road/track cars.

Vehicle Compatibility

BMW M3 E46 (all model years, S54 engine)

What's Included

DO88 BMW E46 M3 Engine Oil Cooler
Please refer to the manufacturer kit contents for final hardware confirmation before installation

FAQs

Which vehicles does the Engine Oil Cooler fit?

This product is suitable for BMW E46 M3. Always confirm the exact model, engine and year against the compatibility list before ordering.

Why upgrade the factory cooling system?

Proven Cooling Gains: 185% larger core volume – 3276 cm³ vs 1148 cm³ OEM, 50% larger active cooling area – 575 cm² vs 383 cm² OEM, 79% higher oil volume – 0.70L vs 0.39L OEM. These improvements translate directly to lower oil temperatures, reduced heat soak, and increased long-term reliability – critical for hard-driven track cars, endurance builds, or spirited road use.

Is this useful on a standard car?

Yes. Even on a standard car, improved cooling can add durability and consistency during hot weather or demanding driving. The benefit becomes more important as power, track use or thermal load increases.

Will this require coding or ECU changes?

Cooling hardware normally does not require coding. Correct installation, fluid filling, bleeding and leak checking are the important steps before the car is driven hard.

Is professional installation recommended?

Yes. Professional fitting is recommended so the cooler is mounted correctly, fluid or boost connections are sealed and the system is bled or pressure-tested where required.

Why Choose do88?

do88 are specialists in performance cooling solutions, renowned for their precision-engineered upgrades for BMW M cars. Their products are trusted worldwide in both motorsport and fast-road applications, ensuring performance without compromise.

Shipping & Delivery

Dispatch Times

Most stocked items dispatch within 1–2 business days. Some products may have longer lead times due to special ordering, availability, or build times. If your order contains multiple items, they may be shipped together once all items are ready unless otherwise agreed.

UK & International Shipping

We ship worldwide. Transit times vary depending on destination and courier. Tracking details are provided once your order is dispatched.

Import Duties & International Orders

International customers are responsible for all import duties, taxes, and clearance fees. These are not included in our prices and are outside of our control. Refusal or non-payment of import charges may result in return shipping, handling fees, and customs charges being deducted from any refund.

Damaged Shipments

If your parcel arrives visibly damaged, please refuse delivery or note the damage with the courier. If damage is discovered after opening, contact us immediately with photos. Do not install damaged items, as installation voids courier claims and return eligibility.

Returns

Returns must be authorised before sending anything back. Returns must be requested within 14 days of delivery and returned within 14 days of approval, in unused/uninstalled condition and in original packaging. Some items, including special-order, built-to-order, used, installed, or modified parts, are non-returnable.

Full details are available in our Shipping Policy and Returns & Refund Policy.

Warranty & Disclaimer

Warranty

Most products include a manufacturer’s warranty covering manufacturing defects only. Warranties do not cover wear and tear, improper installation, misuse or neglect, track use, competition or racing environments, labour costs, vehicle damage, downtime, or consequential loss. Warranty outcomes are determined by the manufacturer, not Clubsport Garage. Items must be returned for inspection at the customer’s cost unless agreed otherwise.

Fitment & Installation

Many products are aftermarket components and may require professional installation or minor adjustment. Perfect OEM-level fitment cannot be guaranteed. Professional installation by an experienced workshop is strongly recommended. Installed or used items cannot be returned.

Motorsport Use Disclaimer

Some products are intended for off-road, track, or motorsport use only and may not be legal for road use, for example non-TÜV/DOT-approved parts. It is the customer’s responsibility to ensure compliance with local laws, insurance requirements, and vehicle regulations. By purchasing and installing aftermarket parts, you accept all responsibility for ensuring compatibility, legal compliance, proper installation, and any resulting wear, damage, or failure.

Product Images & Descriptions

Product photos are illustrative and may differ slightly from the item supplied. If specific details are important, please contact us before purchasing.

Full details are available in our Terms of Service and related policy pages.