Mercedes Actros MP4 Steering Gearbox ZF A9604631301 A9604603200 Euro 6 Used Steering Gear Boxes & Racks

Description:
Genuine Mercedes-Benz/ZF hydraulic power steering gear (steering box) assembly for heavy commercial vehicles. The OEM number A9604631301 (9604631301) identifies this unit as a steering gear used on Mercedes Actros MP4/MP5, Antos and Arocs Euro 6 trucks. The casting and layout match ZF steering gear type KS00001263 used together with various Mercedes reference numbers such as A9604603200, A9614601500, A9604631001 and others. This heavy-duty steering box is chassis-mounted on the front axle steering system and provides hydraulic power assistance to the steering linkage.

The part offered is a complete steering gear assembly with integrated mounting bracket and pitman arm, as shown on the photos. It is suitable for left-hand-drive vehicles within the Actros MP4/MP5, Antos and Arocs Euro 6 range where OEM reference A9604631301 or its supersessions are specified. Typical applications include 4x2, 6x2 and 6x4 tractors and rigid chassis models with OM470/OM471 engines.

This steering gear was removed from a fully operational truck and was checked on the vehicle prior to dismantling for correct support, absence of abnormal steering noise and no excessive free play. After removal the unit was visually inspected; the input shaft turns smoothly and the pitman arm moves without tight spots. There are normal signs of use: surface rust on bracket and bolts, minor paint chipping and marks from tools, but no structural damage or visible cracks. Hydraulic ports and threads are intact.

Technical details (typical for this family of units): hydraulic operating mode, designed for vehicles with power steering; working pressure in the truck hydraulic system approximately 155–170 bar; for Euro 6 Mercedes heavy truck platforms; heavy cast-iron housing with steel mounting bracket and pitman arm. Weight is in the region of 45–55 kg depending on exact specification.

Installation notes:
Professional installation is strongly recommended. The steering gear must be installed according to Mercedes/ZF workshop procedures, including correct centralisation of the steering box, alignment of steering wheel and road wheels, torqueing of all mounting bolts, and bleeding of the hydraulic power steering system. In some cases basic adaptation or calibration via diagnostic equipment may be required to match vehicle steering and assistance settings. Always compare the part number A9604631301 and any ZF tag numbers with your existing unit before purchase.

Compatibility:
Confirmed for Mercedes-Benz Actros MP4/MP5, Antos and Arocs Euro 6 models where OEM steering gear number A9604631301 or related references A9604631001, A9604603200, A9614601500, 9604631301, 9604631001 are specified in the parts catalogue. For exact fitment, check with your dealer using your VIN.

Condition and warranty:
Used, grade B condition: fully functional, with cosmetic wear consistent with mileage. Tested on the vehicle prior to removal and inspected after dismantling. Supplied as pictured, without pipes or mounting hardware. We provide a 3‑month warranty for correct operation, provided the unit is installed by a competent workshop and the hydraulic system is clean and correctly filled.

Shipping & Returns:
We ship across UK/EU with tracked services. Returns accepted within 30 days; buyer pays return postage. Please inspect upon arrival and message us with any concerns.

Why Buy From Us:
Genuine part, 3-month warranty, fast dispatch, secure packaging.