Power Steering Pump (CDI OM646) (Mercedes-Benz Sprinter / Viano/Vito W639) is a critical mechanical component designed to deliver hydraulic pressure to the power steering system, easing the steering effort in larger vehicles like the Mercedes-Benz Sprinter and Viano/Vito models within the W639 series. This pump works by circulating power steering fluid, enabling smooth maneuverability and better control especially at low speeds or while parking.
This power steering pump is intended for vehicles fitted with the CDI OM646 engine configuration, ensuring compatibility with those models. When replacing a pump, compare the old unit’s mounting points and pulley style with this pump to confirm it matches the Mercedes Benz Sprinter and related Viano/Vito applications. Proper fitment is key to restoring effective steering assistance and preventing leaks or noise.
The component plays a vital role in maintaining hydraulic pressure within the steering system, affecting steering responsiveness and driver effort. If your vehicle shows signs of heavy steering or unusual noises, this pump may require inspection or replacement. Always verify the pump’s part number and vehicle details before purchase.
- Designed for Mercedes-Benz Sprinter, Viano, and Vito W639 CDI OM646 engines
- Ensures hydraulic power steering function and vehicle handling support
- Match old pump specifications including mounting and pulley type
If this repair may need matching clips, brackets, lights, panels or more than one part, check more CDI, Quick Repair Bundle or Request a Part before ordering.