BMW 1 3 5 7 SERIES E60 E61 E65 E70 E87 E90 Temperature Sensor Coolant 1433077

The BMW E85 Z4 E87 E90 Coolant Temperature Sensor is an original part from the Thermostats & Housings group, designed for precise monitoring of coolant temperature in selected BMW models. This used OEM component ensures proper compatibility with the factory engine control unit, stable cooling system operation, and predictable engine performance under various load conditions.

Specifications and technical data

• SKU: 1433077
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 13621433077
• Substitutable numbers: 13621433077, 1433077
• Category: Thermostats & Housings

Purpose and Function of the BMW Coolant Temperature Sensor

The coolant temperature sensor in BMW E85 Z4, E87, and E90 models is responsible for measuring the current coolant temperature and transmitting the signal to the engine control unit. Based on this data, the computer manages, among other things, fuel injection, ignition timing, radiator fan operation, and engine warm-up strategies. A functional sensor is crucial for:

• maintaining stable engine operating temperature,
• reducing the risk of overheating or undercooling,
• correct operation of the temperature gauge on the instrument cluster,
• optimizing fuel consumption and emissions.

Construction and Cooling System Compatibility

The offered part belongs to the Thermostats & Housings group, meaning it is structurally designed to work in direct contact with coolant and to be installed in the factory-specified housing. The sensor body is designed to ensure:

• a leak-proof fit within the cooling system housing,
• stable temperature readings across the full engine operating range,
• a secure connection to the vehicle's electrical harness.

By maintaining the original mounting geometry, the sensor is compatible with factory connectors and does not require any wiring modifications, which simplifies servicing and reduces replacement time.

Benefits of Using an Original BMW Sensor

Using an original coolant temperature sensor in BMW E85 Z4, E87, and E90 models allows for the restoration of correct cooling system operating parameters and avoids problems typical of aftermarket replacements with uncertain characteristics. In practice, this means:

• more predictable engine behavior in urban and highway conditions,
• correct ECU response to coolant temperature changes,
• reduced risk of diagnostic errors related to incorrect sensor signals,
• better engine protection against overheating under heavy load conditions.

For the user, this translates to higher cooling system stability and greater confidence during everyday vehicle operation.

Condition, Verification, and Service Application

The offered BMW coolant temperature sensor is a used part from a dismantled vehicle, offering a cost-effective solution while maintaining original manufacturer specifications. This type of part is suitable as a replacement for a damaged sensor or as a component used in diagnosing cooling system issues, such as incorrect temperature readings or unexpected fan activation.

Before installation, standard service procedures are recommended: checking the sensor housing, seal condition, and electrical connection integrity. A correctly installed sensor can quickly eliminate common symptoms associated with incorrect temperature measurement, such as rough cold running, increased fuel consumption, or warning messages.

Other BMW Thermostats & Housings and Technical Materials

If you are looking for other BMW Thermostats & Housings compatible with specific models of this brand, check out the BMW thermostats and housings available in our store to select parts that match your car's factory specifications.

For those interested in a broader context of BMW/MINI vehicle modifications and servicing, an article describing the characteristics of sport MINI versions and their upgrade possibilities may be useful – you can find it here: MINI John Cooper Works – what sets it apart and how to upgrade your MINI?.