Arnott RH-3718 Suspension Ride Height Sensor - Front, Front Left or Rear

Arnott RH-3718 Ride Height Sensor

Arnott RH-3718 is an OE-style ride height sensor for BMW, Mini, Mercedes-Benz, and Rolls-Royce applications that rely on accurate suspension or headlight height feedback. It sends the vehicle computer the position signal needed to maintain correct ride height and leveling performance.

Compatible with front and rear applications across a broad range of 2016-2025 BMW models, plus select Mini Cooper, Mercedes-Benz, and Rolls-Royce vehicles, this universal-fit sensor covers many OE replacement needs. The RH-3718 part number is also referenced for several BMW and Mercedes-Benz applications.

Key Features

• OE-style suspension ride height sensor from Arnott
• Universal fit for left or right side applications where listed
• Includes a sensor and linkage arm
• Supports suspension height and headlight height signal input
• New standard-grade replacement with one female oval connector
• Black connector housing, 6 male terminals, pin terminal type
• No mounting hardware included

Detailed Description

Arnott RH-3718 is built for vehicles that depend on ride height data to keep suspension geometry and leveling systems operating correctly. When the original sensor wears out or is damaged by road debris, impact, water intrusion, or salt exposure, the vehicle may lose accurate height feedback. This replacement restores the signal path between the suspension linkage and the control module.

Use RH-3718 on BMW 3 Series, 5 Series, 7 Series, X models, M models, i models, Z4, Mini Cooper, and select Rolls-Royce and Mercedes-Benz platforms where the listed fitment matches the vehicle position. This part cross-references BMW 37146784072 and Mercedes-Benz 0045429918 for the same application.

What It Helps Solve

• Suspension warning lights related to ride height sensor faults
• Incorrect vehicle leveling or uneven stance
• Headlight leveling issues on equipped vehicles
• Faulty height signal input to the suspension control module
• Damage from corrosion, road debris, or impact

Installation Notes and Tips

Verify the exact year, model, and position before ordering. Fitment includes front, rear, and front-left applications depending on the vehicle, so match the original sensor location and connector style before installation. Inspect the linkage arm, mounting points, and surrounding suspension components for wear or damage during replacement.

For BMW applications such as 330i, X5, and M340i, as well as Mini Cooper and Rolls-Royce models, confirm the listed position and any notes shown in the fitment data. The RH-3718 part number should be matched to the vehicle’s original sensor configuration.

Quality Assurance

Arnott supplies OE vehicle-specific replacement components, and RH-3718 is a new sensor assembly built to restore proper suspension height feedback. The design follows the original function of the factory ride height sensor for accurate signal delivery to the vehicle computer.