Rear Right ABS Wheel Speed Sensor 520mm for Mercedes-Benz M-Class W163 ML320 ML350 ML500 ML55 AMG 1998-2005, Replaces 1635422118 A1635422118, Anti-Lock Brake Hall Sensor Late Chassis

EXACT 520MM CABLE LENGTH FOR LATE-CHASSIS W163 REAR RIGHT POSITION – Saturnovexis ABS wheel speed sensor features a verified 520mm (20.47-inch) wiring harness specifically engineered for the rear right (passenger side rear) position on later-production Mercedes-Benz W163 M-Class vehicles. This length differs from the 590mm harness used on earlier chassis versions. Using an incorrect cable length will result in insufficient reach or excess slack causing wire damage. Our sensor guarantees the precise 520mm specification with pre-installed routing clips for secure harness management along the rear suspension path.

HALL SENSOR TECHNOLOGY MATCHES LATE-PRODUCTION OE SPECIFICATIONS – Unlike earlier passive sensors used on pre-2003 W163 vehicles, this sensor uses active Hall effect technology that matches the updated OE specifications for chassis number from 0371935 onward. The Hall sensor provides superior signal accuracy and faster response time compared to passive designs, ensuring reliable communication with the ABS and ESP control modules. Using a passive sensor on a late-chassis vehicle will result in signal mismatch and persistent warning lights.

RESTORE ABS ESP AND TRACTION CONTROL SAFETY ON REAR AXLE – A failing rear wheel speed sensor triggers the ABS warning light, disables Electronic Stability Program (ESP), deactivates traction control, and may cause erratic speedometer behavior on W163 vehicles. Saturnovexis sensor is tested to match OE output voltage, resistance, and trigger gap specifications, ensuring accurate rear wheel speed data delivery to the brake control module for safe anti-lock braking performance and stable vehicle dynamics during cornering and emergency maneuvers.

VERIFIED FITMENT ACROSS W163 MODEL RANGE WITH CHASSIS REQUIREMENT – Direct replacement for OE numbers 1635422118 and A1635422118. Compatible with Mercedes-Benz ML 270 CDI (1999-2005), ML 320 (1998-2005), ML 350 (2002-2005), ML 400 CDI (2001-2005), ML 430 (1999-2005), ML 500 (2002-2005), and ML 55 AMG (2000-2005) with chassis number from 0371935. Note: This listing is for the rear right sensor only. Rear left uses OE 1635422018, front left uses 1635421818, and front right uses 1635421918. Always verify fitment via VIN or chassis number prior to purchase.

PLUG-AND-PLAY INSTALLATION WITH MOUNTING HARDWARE INCLUDED – No wire splicing, soldering, or programming required. Simply unbolt the old sensor from the rear knuckle, disconnect the electrical plug, and bolt in the new Saturnovexis unit using the included fastening material. Typical DIY installation takes 15-25 minutes with basic hand tools. Package includes 1x ABS wheel speed sensor with protective terminal cap and mounting hardware. Use an OBD2 scanner after installation to clear stored ABS/ESP fault codes. Backed by Saturnovexis customer support team.

The Saturnovexis Rear Right ABS Wheel Speed Sensor is specifically engineered for later-production Mercedes-Benz W163 M-Class vehicles, replacing OE part number 1635422118 (A1635422118). This sensor is designed for the rear right (passenger side rear) position and fits vehicles with chassis number from 0371935 onward.

This part represents the updated version of the earlier OE 1635401117 sensor used on early-production W163 vehicles. Mercedes-Benz revised the rear wheel speed sensor design during the W163 production run, changing both the part number and the underlying sensor technology. The later version uses an active Hall effect sensor with a 520mm cable, while the earlier version used a passive sensor with a 590mm cable. These differences are critical—using the incorrect version will result in signal type mismatch, cable reach issues, and persistent ABS/ESP warning lights.

The W163 M-Class uses four distinct wheel speed sensors for the late-chassis version, each with a unique OE part number: front left (1635421818), front right (1635421918), rear left (1635422018), and rear right (1635422118). These sensors are not interchangeable between positions or between early and late chassis versions.

When the original rear wheel speed sensor fails due to internal circuit degradation, wire chafing from rear suspension movement, or connector corrosion from road salt exposure, the ABS and ESP control modules lose accurate rear wheel speed data. This compromises vehicle stability during cornering, emergency lane changes, and slippery road conditions. Each Saturnovexis sensor features an active Hall sensing element calibrated to match OE output specifications, a reinforced plastic housing for superior underbody durability, and a Mercedes-specific weatherproof connector that maintains the factory moisture seal.

Every sensor undergoes continuity and signal output validation testing before packaging to guarantee out-of-box functionality. Components meet automotive environmental standards and comply with European RoHS directives.

Compatible Vehicles (Rear Right Only, Late Chassis from 0371935)

Mercedes-Benz ML 270 CDI (1999-2005), ML 320 (1998-2005), ML 350 (2002-2005), ML 400 CDI (2001-2005), ML 430 (1999-2005), ML 500 (2002-2005), ML 55 AMG (2000-2005). Always verify fitment via VIN or chassis number prior to purchase.