Product Description
WABCO / ZF 446 477 831 2 (ZF-NR: 6370239004) Electronic Level Control (ELC) Compressor Unit
The WABCO / ZF 446 477 831 2 (ZF-NR: 6370239004) is a premium Electronic Level Control (ELC) Compressor Unit engineered specifically for commercial vehicle air suspension systems. This highly integrated assembly ensures optimal vehicle leveling, ride comfort, and height management under varying load conditions. It is equipped with a robust 24V DC motor, a translucent air dryer and reservoir tank for efficient moisture removal, and a durable black pressure accumulator sphere. The system’s operations are precisely managed by an integrated Electronic Control Unit (ECU), which is safely housed within a heat-dissipating, finned aluminum casing. Complete with all necessary pneumatic ports and secure electrical connectors, this genuine OEM component delivers exceptional durability, seamless integration, and reliable performance for heavy-duty applications.
Technical Specifications:
- Brand: WABCO / ZF
- Model / Part Number: 446 477 831 2
- ZF Part Number: 6370239004
- Operating Voltage: 24V DC
- System Type: Electronic Level Control (ELC) / Air Suspension Compressor Assembly
- Component Part Number: WABCO 400 5019 012
- Design Features: Integrated ECU, Air Dryer/Reservoir, Pressure Accumulator Sphere, Finned Aluminum Housing

WABCO / ZF 446 477 831 2 (ZF-NR: 6370239004) Electronic Level Control (ELC) Compressor Unit
Genuine WABCO / ZF 446 477 831 2 (ZF-NR: 6370239004) Electronic Level Control (ELC) Compressor Unit. This 24V DC integrated air suspension compressor features a built-in ECU and air dryer, ensuring optimal ride height and leveling for commercial vehicles. Replace your ELC compressor with OEM quality for guaranteed reliability.






