The Mishimoto Replacement Transmission Oil Cooler is a direct-fit replacement for the factory liquid-to-liquid transmission oil cooler on 2004-2018 BMW N20, N52, and N55 vehicles. The factory unit eventually wears out and can leak coolant into the transmission fluid, leading to costly transmission damage. This durable aluminum replacement matches OEM fit and performance, requires no modifications, and is backed by the Mishimoto Lifetime Warranty.
| Type | Replacement transmission oil cooler (liquid-to-liquid) |
| Construction | Corrosion-resistant aluminum |
| Fitment | Direct-fit to OEM, no modifications required |
| Part Number | MMOC-N5X-06 |
| Warranty | Mishimoto Lifetime Warranty |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2013 | BMW | 128i | Base |
| 2014-2016 | BMW | 228i | Base |
| 2015-2016 | BMW | 228i xDrive | Base |
| 2013-2018 | BMW | 320i | Base |
| 2013-2017 | BMW | 320i xDrive | Base |
| 2013-2016 | BMW | 328i | Base |
| 2013 | BMW | 328i xDrive | Base |
| 2014-2016 | BMW | 428i | Base |
| 2015-2016 | BMW | 428i Gran Coupe | Base |
| 2006-2007 | BMW | 525i | Base |
| 2006-2007 | BMW | 525xi | Base |
| 2008-2011,2014-2016 | BMW | 528i | Base |
| 2009-2010,2012-2016 | BMW | 528i xDrive | Base |
| 2008 | BMW | 528xi | Base |
| 2004-2007 | BMW | 530i | Base |
| 2006-2007 | BMW | 530xi | Base |
| 2008-2016 | BMW | 535i | Base |
| 2010-2017 | BMW | 535i GT | Base |
| 2011-2017 | BMW | 535i GT xDrive | Base |
| 2009-2016 | BMW | 535i xDrive | Base |
| 2014-2016 | BMW | 640i | Base |
| 2014-2016 | BMW | 640i Gran Coupe | Base |
| 2014-2016 | BMW | 640i xDrive | Base |
| 2014-2016 | BMW | 640i xDrive Gran Coupe | Base |
| 2014-2015 | BMW | X1 | sDrive28i |
| 2014-2016 | BMW | X1 | xDrive28i |
| 2006 | BMW | X3 | 3.0i |
| 2007-2008 | BMW | X3 | 3.0si |
| 2015-2017 | BMW | X3 | sDrive28i |
| 2015-2017 | BMW | X3 | xDrive28d |
| 2011-2012,2015-2017 | BMW | X3 | xDrive28i |
| 2009-2010 | BMW | X3 | xDrive30i |
| 2011-2017 | BMW | X3 | xDrive35i |
| 2016 | BMW | X4 | M40i |
| 2015-2018 | BMW | X4 | xDrive28i |
| 2015-2016 | BMW | X4 | xDrive35i |
| 2006 | BMW | X5 | 3.0i |
| 2007-2008 | BMW | X5 | 3.0si |
| 2011 | BMW | X5 | M |
| 2014-2016 | BMW | X5 | sDrive35i |
| 2009-2010 | BMW | X5 | xDrive30i |
| 2009-2016 | BMW | X5 | xDrive35d |
| 2011-2016 | BMW | X5 | xDrive35i |
| 2011 | BMW | X5 | xDrive50i |
| 2016 | BMW | X6 | M |
| 2015-2016 | BMW | X6 | sDrive35i |
| 2008-2016 | BMW | X6 | xDrive35i |
| 2016 | BMW | X6 | xDrive50i |
| 2004-2005 | BMW | Z4 | 3.0i |
| 2006-2008 | BMW | Z4 | Coupe 3.0si |
| 2006-2008 | BMW | Z4 | Roadster 3.0i |
| 2006-2008 | BMW | Z4 | Roadster 3.0si |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
