Heating and Cooling› Oil and Fluid Coolers
Mishimoto
Mishimoto 06-18 BMW N20/N52/N55 Replacement Oil Cooler
SKU: M00C MMOC-N5X-06
Easy — 1–2 hours
Description
Part #: MMOC-N5X-06
The factory transmission oil cooler on 2006-2018 BMW N20, N52, N55 vehicles is a liquid-to-liquid cooling unit, utilizing the engine's cooling system to cool the transmission fluid during warm outside temperatures and warm the fluid during cold outside temperatures. Though these designs are tried and true, they eventually wear out and fail, leading to leaking coolant into your transmission fluid. Mixing coolant into your transmission fluid can have catastrophic results and can cost thousands of dollars in rebuilding or replacing the transmission.--The Mishimoto Replacement Transmission Oil Cooler is a direct fit to the OEM, making it easy to install, and is equivalent to the OEM Specifications of performance. This product requires no modifications and is backed by the Mishimoto Lifetime Warranty. Replace your transmission cooler and prevent premature failure.
Replacement Oil Cooler, fits BMW N20/N52/N55, 2006-2018
MIA's Description
This cooler is constructed from durable, corrosion-resistant aluminum and is built to be equivalent to OEM specifications for fit and function. The installation is straightforward, requiring no modifications and utilizing all factory lines and hardware. It also includes a gasket and is backed by the Mishimoto Lifetime Warranty.
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Mishimoto |
| Part Number | M00C MMOC-N5X-06 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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