do88 S58 Transmission Cooler BMW G8X M2 M3 M4
Product Description
Keep Your S58 Shifting Smoothly
Improve transmission durability and cooling on track and road with do88’s upgraded transmission cooler – designed to handle the extra heat generated by tuned G8X models without compromising shift speed or gearbox life.
Why Upgrade?
Overheating Risks in Tuned G8X Cars
The ZF 8HP automatic transmission fitted to the G87 M2, G80 M3, and G82 M4 is impressively capable – but like many OEM parts, its cooling system was not designed for extended track use or heavy tuning. With increased power and heat comes greater stress on the transmission cooler. Overheating can cause:
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Slower, less consistent gear changes
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Reduced transmission life
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Limp mode or transmission fault warnings
Key Features
Designed for Performance
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+71% increased core volume vs. OEM
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+50% increased cooling surface area
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Dual-pass flow for longer fluid residence time
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Upgraded harmonica-style tubes with internal channels for improved oil flow
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Optimised design with no increase in oil pressure
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42% increase in oil volume (850ml vs 600ml OEM)
Motorsport-Ready Construction
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Full aluminium construction for maximum strength and heat dissipation
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TIG-welded end tanks for long-term reliability
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OEM-style quick-connect fittings for hassle-free installation
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Fits without any vehicle modifications
Compatibility
Fits all S58-powered G8X models including:
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BMW G87 M2 (2023–202X)
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BMW G80 M3 / M3 Competition / M3 CS (2020–202X)
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BMW G82 M4 / M4 Competition / M4 CSL (2020–202X)
Supporting Upgrades Recommended
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do88 Engine Oil Cooler
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do88 Front Intercooler Radiator
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do88 Auxiliary Radiators (L+R)
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ECU software upgrades for gearbox temperature monitoring and tuning
Why Choose do88?
With Swedish precision and a focus on track-ready performance, do88 products are engineered to solve real-world problems. The S58 cooling system has known limitations – do88 fixes them with tested, CFD-developed solutions that are easy to install and built to last.
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.
