The Meritor ECU-E Cab 4S/4M electronic control unit carries part number S400-850-192-0 or S4008501920. This is a cab-mounted ABS ECU configured for a 4-sensor, 4-modulator (4S/4M) system, the standard full-axle ABS configuration on heavy-duty commercial trucks. The ECU-E designation identifies it as Meritor's cab-mounted controller variant, distinguishing it from frame-rail or axle-mounted configurations. Sourcing the correct ECU by part number is critical in ABS systems, as sensor and modulator channel counts must match the vehicle's wiring and valve configuration. This is a genuine Meritor part available from Pro Gear and Transmission. Not sure this is your part? Give us a call to confirm proper fit for your application.
Features
Meritor ECU-E cab-mounted ABS electronic control unit
4S/4M configuration: 4-sensor, 4-modulator channel support
Part number S400-850-192-0 or S4008501920
Cab-mount installation variant (ECU-E designation)
Genuine Meritor part sold by Pro Gear and Transmission
