Εγκέφαλος Astronic Wabco - 4213550156

The WABCO Astronic Modulator 4213550156 is the main electro-hydraulic control unit used in ZF AS Tronic automated gearboxes. It manages gear selection, clutch actuation, pressure regulation and all shifting functions. Because it controls every movement inside the gearbox, it plays a key role in the smooth and reliable operation of the vehicle.

This unit is a genuine WABCO component. It has been fully inspected, and all solenoids, valves and electronic circuits work correctly. It is an ideal replacement for trucks that experience hard shifting, gearbox error codes, slow engagement or “limp mode” faults. The module installs easily and restores normal gearbox performance right away.

The WABCO 4213550156 modulator fits a wide range of European trucks that use the ZF AS Tronic transmission platform. It offers strong durability, stable operation and long service life under heavy-duty conditions.

Compatible Truck Brands

This WABCO Astronic Modulator can be installed on vehicles equipped with ZF AS Tronic gearboxes, including:

• MAN (TGA, TGS, TGX)

• DAF (XF, CF)

• IVECO (Stralis, Eurotronic versions)

• RENAULT (Magnum, Premium with AS Tronic)

• VOLVO (selected models that use AS Tronic instead of I-Shift)

• TATRA, MAZ, and other platforms running the ZF AS Tronic system

(Compatibility may vary by gearbox version — full check possible with VIN.)

Key Identification Numbers

• WABCO Main Code: 4213550156

• Sticker Code: 4213555382

• Alternative Marking: 421 355 015 6

• Barcode Reference: 6009 274 088

Technical Features

• Original WABCO electro-hydraulic control unit

• Designed for ZF AS Tronic transmissions

• Fully tested and fully functional

• Clean casing with no cracks or damage

• Ready for direct installation

• Does not require additional coding in most cases