MMX Performance BMW E9X M3 DCT Transmission Oil Cooler

$851.36
$851.36
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The MMX Performance BMW E9X M3 DCT Transmission Oil Cooler is a direct upgrade for one of the most temperature-sensitive components on the E9X M3 platform. The factory DCT cooler is adequate for stock-power, mild-driving use, but the moment the car sees track time, hot weather, traffic, or any meaningful tune (particularly forced induction) gearbox oil temperatures climb quickly, and a hot DCT is a slow DCT and, eventually, a damaged one.

This MMX cooler replaces the OE unit with a substantially higher-capacity core that meaningfully extends the thermal headroom of the gearbox. The result is more consistent shifts under load, less risk of clutch-pack overheating, and a measurably longer service life for one of the most expensive components on the car. The cooler is engineered specifically for the E9X M3's DCT mounting points and oil routing; it's a direct fit, not an adapted universal core.

The benefit is most obvious on supercharged or otherwise tuned E9X M3s, where peak gearbox oil temperatures are routinely a real-world reliability concern. But even a factory-spec M3 driven hard on a hot day will see a clear, sustained reduction in transmission oil temperature with this cooler fitted.

For any E9X M3 owner who tracks the car, who is running a forced-induction tune, or who simply wants to give the DCT every chance to live a long life, this is one of the highest-impact thermal upgrades available for the platform.

Product Details

  • Upgraded DCT transmission oil cooler for the BMW E9X M3
  • Direct OE replacement: uses factory DCT mounting points and oil routing
  • Substantially increased core capacity vs OE
  • Suitable for factory-spec, tuned, and supercharged E9X M3
  • Strongly recommended for tracked and / or forced-induction E9X M3
  • SKU: MMR17-0202

Notes

  • FOR DCT-EQUIPPED E9X M3 ONLY: does not fit 6-speed manual E9X M3
  • Please contact us to confirm compatibility for your specific vehicle
  • Includes a 1-year manufacturer warranty against defects in materials and workmanship
  • Designed and tested in the United Kingdom
MMX Performance BMW E9X M3 DCT Transmission Oil Cooler

$851.36

Does it come with a warranty?

Parts are covered by the manufacturer's warranty where one is offered. If something goes wrong, contact us and we'll help you with the claim.

What happens if I don't like it?

New, uninstalled parts in their original packaging can be returned within 30 days of delivery. Suspension components (coilovers, springs and dampers), wheel spacers and batteries can't be returned, and a restocking fee applies to approved returns. See our refund policy for details.

How fast is shipping?

In-stock orders usually ship within 1–3 business days. Many parts ship directly from the manufacturer or distributor. Orders over $200 ship free with standard shipping, and faster UPS and USPS options are available at checkout. See our shipping policy.

What's the returns policy?

You have 30 days after receiving your item to request a return. Parts must be new, uninstalled and in their original packaging. Contact us first to start a return. Full details are in our refund policy.

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