Product Description
WABCO ABS ECU/VALVE ASSY (2S/2M) – ENHANCED EASY-STOP TRAILER MODULE
PART NUMBER(S):
Wabco: S400 500 1020, S4005001020
DESCRIPTION:
Model: Enhanced Easy-Stop™ ABS Modulator Valve Assembly (2S/2M configuration)
Engines: N/A (modulator valve – not engine-dependent)
Vehicles:
• Mack trailers (OE Ref: 6300-4005001020)
• Manac trailers (OE Ref: 22801003, 228-01003)
• Peterbilt trailers (OE Ref: S400-500-102-0)
• Compatible with all standard trailers equipped with 2S/2M WABCO ABS systems
• Designed for trailers requiring Enhanced Easy-Stop™ ABS performance
Applications:
• ABS relay modulator valve with integrated ECU – used in standard trailer ABS systems
• Replacement for WABCO Enhanced Easy-Stop™, TCS II Basic systems
• Ensures optimal trailer braking performance and stability by modulating brake pressure and controlling wheel lock-up
• Plug-and-play replacement for legacy ABS 2S/2M units
• Supports TCS II (traction control system) in applicable trailers
• System Type: 2S/2M (2 sensors, 2 modulators)
• Voltage: 12V
• Max Operating Pressure: 13.0 bar
• Weight: Approx. 4.69 kg
• Includes: ECU (S446 850 600 0) + Dual Modulator (S400 850 602 0)
• Temperature Range: –40°C to +65°C
• Port Threads:
-
Control Port: 1/4" – 18 NPT
-
Delivery Ports: 4x 3/8" – 18 NPT
-
Supply Ports: 2x 3/4" – 14 NPT
• Mounting: Flange-mounted ABS relay valve
Installation Notes:
• No core return required – unit is sold new
• Intended for standard trailers only (not compatible with steerable or lift-axle configurations without additional sensors)
• Professional installation recommended – ensure system calibration with WABCO Toolbox™
• Meets California Prop 65 compliance for chemical exposure warning
• Covered under 1-year warranty when sold via authorized distributors
CROSS REFERENCES:
S4005001020, S400 500 102 0, TDAS4005001020, 40502932, 10008470, S400-500-102-0, 6300-4005001020, 22801003, 228-01003, 4005001020, 400 500 102 0, 815-4005001020, 650-S4005001020, S-27491, 670-S27491, S27491, 8235-S4005001020, 46040401300, 52733, 3-9350-074, WAB4005001020, TDA-S4005001020, 4005001029, 2ABS00014, RWW4005001020, S4005001020, S400 500 102 0,TDAS4005001020, 40502932, 10008470, S400-500-102-0, 6300-4005001020, 8235-S4005001020, 22801003, S400-500-102-0, 46040401300, 52733, 3-9350-074, WAB4005001020, TDA-S4005001020, 4005001029, 2ABS00014, RWW4005001020, 170.S4005001020
A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
SOLD AS NEW
Brand new and ready to install, with OEM Grade Reliability
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, Call: 1-877-243-0442 | Email: sales@fleet-products.com
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
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