BMW X3 Z4 Series E83 E85 Temperature Sensor Thermo Switch Heatable Spray Nozzle

BMW X3 Z4 Series E83 E85 Temperature Sensor Thermo Switch Heatable Spray Nozzle is an original windshield washer system component used in selected E83 and E85 series models. It is responsible for temperature control and activating the nozzle heating, which improves visibility and driving comfort in low temperatures. This is a practical solution for drivers who want to maintain the efficiency of the factory washer system in their BMW.

Specifications and technical data

• SKU: 8370747
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8370747
• Substitutable numbers: 61318370747, 8370747, EM

Purpose and function in the washer system

This temperature sensor is used in the windshield washer system of BMW X3 E83 and BMW Z4 E85 models. Its task is to monitor the ambient temperature in the nozzle area and control the heating circuit so that the heating is activated only when necessary. This reduces the risk of fluid freezing at the nozzle outlets while avoiding unnecessary strain on the electrical system.

A properly functioning sensor translates into stable operation of the entire windshield washer system, which is important for both safety and the durability of other system components.

Advantages of using an original BMW component

As an original BMW part, the sensor maintains full compatibility with the factory electrical installation and controller operating parameters. This means:

• a secure fit to the wiring harness and installation sockets,
• correct heating activation and deactivation thresholds,
• stable cooperation with the vehicle's electronics without the need for modifications.

For users who want to better understand the difference between an original part and a replacement, we have prepared material explaining why used original OEM parts are a safe and cost-effective choice when repairing a car. It allows for an informed approach to selecting components for BMW vehicles.

Operational characteristics and installation

The offered item comes from disassembly and is in used condition, which in practice means maintaining the factory design at a more favorable purchase cost. Sensors of this type are designed as long-lasting components, operating in variable thermal and humidity conditions, which is why their reuse in a functional vehicle is technically justified.

Installation of the sensor in most cases comes down to:

• mechanical seating in the intended socket or bracket,
• connection to the factory electrical harness,
• verification of the nozzle heating system operation after starting the vehicle.

Due to the connection with the electrical system, installation by a person with experience in BMW service or by a specialized workshop is recommended.

Why choose this temperature sensor for BMW X3 / Z4

Replacing a faulty sensor with an original component allows you to restore the factory operation of the heated washer nozzles, which is especially important in climates with frequent temperature drops below zero. A functional heating system:

• reduces the risk of nozzles being blocked by ice,
• ensures better windshield cleaning in winter,
• limits the need for emergency interventions in difficult weather conditions.

For those planning a wider range of repairs using original components from disassembly, especially in the area of safety and bodywork, it may also be helpful to read about when used parts are a reasonable alternative to replacements for post-accident repairs. It allows you to better plan the service strategy for the entire vehicle.

Summary

BMW X3 Z4 Series E83 E85 Temperature Sensor Thermo Switch Heatable Spray Nozzle is a practical, original component that restores the correct operation of the windshield washer system in winter conditions. By maintaining factory operating parameters and compatibility with the BMW installation, it is a reasonable choice for drivers who expect predictable washer system performance and want to keep the car in a configuration close to the factory state.