do88 BMW E46 M3 Auxiliary Oil Cooler
Product Description
Expand Your Cooling System with Motorsport Precision
The do88 Auxiliary Oil Cooler is designed as the perfect companion to the do88 Performance Radiator (WC-310) for the BMW M3 E46. Developed for motorsport and heavy-duty applications, it provides additional cooling capacity for low-pressure systems such as power steering or gearbox oil – essential for maintaining reliability under extreme use.
Why Add an Auxiliary Oil Cooler?
Solves Overheating in Secondary Systems
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Ideal for cooling power steering fluid or gearbox oil
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Helps prevent overheating in track, drift, or endurance environments
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Ensures consistent performance and protects against premature wear
Built for Integration with the do88 Radiator
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Mounts directly to the do88 Performance Radiator (WC-310) using the included CNC-machined brackets
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Rubber-lined P-clips and mounting screws supplied for a clean installation
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Compact, efficient core design optimised for secondary cooling needs
Flexible, Motorsport-Grade Connections
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AN6 male connections for simple and secure plumbing
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Requires custom oil lines (not included) to suit your setup
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Versatile design accommodates a wide range of build specifications
Technical Details
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Core dimensions: 446 x 131 x 26.5 mm
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Total dimensions: 652 x 131 x 202 mm
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AN6 male fittings (x2)
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Weight optimised for motorsport use
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Supplied with mounting hardware (P-clips and screws)
Applications
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BMW M3 E46 (2000–2006, S54 engine)
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For use with do88 Performance Radiator (WC-310)
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Configurable as a power steering or gearbox oil cooler
Why Choose do88?
Swedish-engineered and track-proven, do88 products are designed for enthusiasts and racers who demand reliability and performance under the harshest conditions. Every component is CFD-tested, track-validated, and built with uncompromising quality.
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.
