Mishimoto racing thermostat for the BMW N52 / N54 / N55 inline-six (128i, 135i, 1M, 328i, 335i, 525i–530i, X1, X3, X5, X6, Z4). It opens at a lower temperature than stock, letting coolant flow through the engine sooner to reduce and maintain cooler temperatures. Direct-fit replacement, backed by the Mishimoto Lifetime Warranty.
Specifications
| Type | Racing thermostat |
| Activation Temp | Opens earlier than stock |
| Engine | BMW N52 / N54 / N55 |
| Warranty | Lifetime |
| Application | BMW N52/N54/N55 (see fitment) |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011 | BMW | 1 Series M | Base |
| 2008-2013 | BMW | 128i / 135i | Base |
| 2004-2013 | BMW | 325i/328i/330i/335i | Base / xi / is |
| 2004-2010 | BMW | 525i/528i/530i | Base / xi |
| 2006-2014 | BMW | X1 / X3 / X5 / X6 | xDrive35i / 3.0si |
| 2005-2014 | BMW | Z4 | 3.0i / 3.0si / sDrive35i |
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