Hi-Performance E46 M3 55 Degree Thermostat

by: BMW

BMW Motorsport developed this unit for racing/high performance application on street cars where operating temperature needs to be held down due to higher heat load from increased HP and torque. An essential upgrade for your upgraded NA or Force Inducted E46 M3.

NOTE: This device will cause the SES ( Service Engine Soon ) light to illuminate due to slower warm up time. As an option, Active Autowerke can reflash your DME to compensate for the new warm up interval.

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