The Coolant Temperature Sensor in the BMW 3.0Si measures real time heat so that the control unit can ensure the legendary straight six is strong and protected. This Coolant Temperature Sensor was trusted by every BMW 3.0Si production year. It uses a tough thermistor core whose resistance changes instantly with the coolant warmth. As a result, raw temperature becomes a clean voltage signal the electronic brain can interpret in a matter of microseconds. Since the Coolant Temperature Sensor is always sampling, fuel flow and spark advance are optimized all the time. The result is smooth cold starts, energetic highway pulls, and lean overall fuel use. The owners are all praise for the device which has near zero failure reports. The device has proved to be rock solid as it never fails to work. It is a case of the perfect fit, simply clicking into position on early mechanical-injection 3.0Si sedans and later fuel-injection revisions, making sourcing a replacement a no-brainer. The Coolant Temperature Sensor warns the computer long before heat reaches danger levels, so things like fan engagement and mixture enrichment can be applied to cool things down, preventing damage, which is obviously a huge safety gain. Owners enthusiastically report that the Coolant Temperature Sensor's sealed brass housing resists vibration and corrosion. The Coolant Temperature Sensor is resistant to vibration and corrosion, allowing it to function properly through countless heat cycles. This small Coolant Temperature Sensor also keeps digital gauges reliable, allowing drivers to monitor temperature trends with confidence. This tested BMW part is an authentic match for any 3.0Si configuration, which means performance is consistent with original BMW specification. Because the Coolant Temperature Sensor is inexpensive to manufacture, small and rugged, it is recommended. This little sensor upholds the sporty character and efficiency goals of the BMW 3.0Si heritage.
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