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SKU:
NLT2T01619
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WABCO 4005001020 12V Trailer ABS ECU & Relay Valve – 2S/2M TCS II
$467.39
In Stock
$467.39
Sale price
$467.39
Regular price
WABCO 4005001020 combines a 12-volt trailer ABS electronic control unit with the relay-valve assembly for 2-sensor / 2-modulator systems.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
| Brand / Family | Compatible Applications |
|---|---|
| Trailer ABS | 2S/2M WABCO Basic VCS II / TCS II Standard systems |
| Cross-brand service references | Freightliner, Great Dane, Hyundai and Kenworth references listed below |
Product Overview
This Basic VCS II / TCS II Standard assembly monitors wheel-speed inputs and modulates trailer braking pressure during an ABS event. Correct replacement requires matching the WABCO number and the trailer's 2S/2M electrical/pneumatic configuration.
This is more than a stand-alone ECU: the catalog configuration includes the flange-mounted ABS relay valve.
Key Features & Performance
- Integrated ABS control: Combines electronic wheel-speed processing with pneumatic brake-pressure modulation for the specified trailer ABS architecture.
- System-specific replacement: Sensor/modulator count, voltage, connectors and air-port layout must match the trailer system.
- Heavy-duty environment: The cataloged unit is designed for trailer brake service with sealed electronics and a high-pressure pneumatic relay section.
- Product-specific note: This is more than a stand-alone ECU: the catalog configuration includes the flange-mounted ABS relay valve.
Technical Specifications
- System voltage: 12V
- ABS configuration: 2S/2M
- Maximum operating pressure: 13 bar / 188.5 psi
- Environmental rating: IP66
- Temperature range: -40°C to +65°C
Replaces / Reference Part Numbers
4005001020, TDAS4005001020, 40502932, 10008470, S400-500-102-0
Common Replacement Reasons
- ABS ECU/relay-valve fault confirmed by trailer diagnostics
- Damaged electrical/pneumatic ports or water intrusion
- Replacement required to restore the correct 2S/2M ABS configuration
Frequently Asked Questions
How do I confirm this is the correct part?
Verify the exact WABCO number and trailer ABS architecture; do not substitute a 4S/2M or different-voltage controller.
Is this an OEM part?
Unless the listing is explicitly identified as genuine/OEM in the product data, treat it as a replacement component. Use the verified reference numbers, equipment application and physical configuration above to match your original part.
What should I check before installation?
Pneumatic port layout, electrical connectors and sensor/modulator count should all match before installation.
Fitment note: Equipment manufacturers may use different components within the same model family based on engine, serial number or production date. Confirm the original part number and machine/engine details before ordering.