Keep your BMW's leveling system reading the true height of the body with the Arnott Industries Headlight Level Sensor / Suspension Ride Height Sensor RH-3718. This part is listed under both names. It is engineered as a direct-fit replacement for many vehicles, among them the 2014-2025 BMW 220i, 2016-2025 BMW 330i and 2017-2025 BMW 430i. See the "Vehicles it fits" section for the full list.
This precision ride height sensor measures the changing distance between the road and the vehicle's chassis. It passes that reading to the Electronic Control Unit (ECU), which uses it to level the vehicle and calibrate the suspension.
- Plug-and-play install: Engineered as a direct-fit replacement with plug-and-play integration for an easy install.
- Front or rear, right or left: Cataloged for front and rear mounting on either the right or left side. The listed applications use 2.
- Cycle tested: Lab tested up to 1 million cycles.
- Connector: Black oval connector with 6 male pin terminals.
Ride height sensors can wear out over time. They can also be damaged by road debris, accidents, and water or salt intrusion. If a worn or damaged sensor is causing incorrect height readings, this replacement is designed to bring back proper ride height sensing for suspension adjustment and vehicle stability. For best results, Arnott recommends replacing these sensors in pairs. Sold individually; this listing is for one sensor. Grade: standard replacement. Country of origin: China.
Interchange: 37146784072 · 37146788569 · 37146788571 · 37146860843 · 37146870000 · 37146895466
This part cross-references / interchanges with the following part numbers:
37146784072, 37146788569, 37146788571, 37146860843, 37146870000, 37146895466
Frequently Asked Questions
What does the Arnott RH-3718 sensor do?
It measures the changing distance between the road and the vehicle's chassis. It sends that reading to the ECU, which uses it to level the vehicle and calibrate the suspension.
Is this a headlight level sensor or a suspension ride height sensor?
It is listed under both names: Headlight Level Sensor and Suspension Ride Height Sensor.
Which position does the RH-3718 fit?
It is cataloged for front and rear mounting on either the right or left side of the listed applications. Those applications use 2 sensors.
Should I replace ride height sensors in pairs?
Arnott recommends replacing them in pairs for best results. Each sensor is sold individually, so order 2 for a pair.
What connector does the RH-3718 use?
It has a black oval connector with 6 male pin terminals. It is designed for plug-and-play installation on the listed applications.
