BMW's M3 Motorsport Thermostat (55°C /130°F) is for those tracking their S50Euro/S54 under racing conditions. Developed by BMW engineers for competution use, this thermostat opens at a much lower temperature, allowing these engines are able to generate more power.
Not recommended for street use.
**Fits E46 M3 and Euro E36 M3 engines ONLY, does NOT fit M50 or S50/S52 US engines**
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