Fiat Doblo Power Steering Pump Pulley Wheel Roller Diesel 1.9 JTD 55190861

Fiat Doblo Power Steering Pump Pulley Wheel Roller Diesel 1.9 JTD is a precision-engineered steering system component designed for use with diesel engines. It is responsible for the stable transmission of drive to the power steering pump, which translates into smooth system operation and driving comfort. By adhering to the manufacturer's specifications, this is a particularly beneficial solution for servicing the power steering system in a Fiat Doblo with a Diesel 1.9 JTD engine.

Specifications and technical data

• SKU: 55190861
• Mark: Fiat
• Condition: Used
• OEM Part Number: 55190861
• Substitutable numbers: 55190861
• Fuel type: Diesel
• Category: Power Steering Pumps

Purpose and function in the power steering system

The power steering pump pulley in a Fiat Doblo is responsible for the mechanical connection between the engine drive and the hydraulic pump. A correctly selected component ensures:

• stable transmission of torque to the power steering pump,
• maintenance of proper accessory belt tension,
• even operation of the steering system at various engine speeds,
• reduced risk of belt slippage and noise in the engine compartment.

In combination with a pump from the Power steering pumps category, the pulley influences the precision of vehicle handling, especially during low-speed maneuvering and under high steering system loads.

Compatibility with the 1.9 JTD diesel engine

The presented pulley is designed to work with the Diesel 1.9 JTD power unit, which means it is matched to the operating characteristics of a diesel engine – higher torque and specific vibrations. The appropriate geometry and mounting method allow for maintaining:

• proper alignment relative to other accessory pulleys,
• stable belt operation under long-term load,
• consistency with the factory accessory drive system in the Fiat Doblo.

As a result, this component can be used as a service part when replacing a worn pulley in vehicles with a diesel engine, without the need to modify other components.

Characteristics of the used component

The offered pulley comes from the used parts group, which allows for economical repair of the power steering system while maintaining the original assembly specifications. Such elements are frequently chosen for:

• maintenance repairs of fleet vehicles,
• servicing commercial vehicles where reasonable maintenance costs are a priority,
• cases where quick restoration of steering system functionality is required.

As a mechanical part, the pulley retains its functional properties for a long time under proper operating conditions, making it a practical choice for Fiat Doblo repairs.

Importance of selection based on manufacturer markings

To ensure full compatibility with the power steering system, it is worth selecting the pulley based on manufacturer markings and vehicle data. In practice, this means verifying:

• compatibility with the specific version of the diesel engine,
• connection with the appropriate type of power steering pump,
• consistency with the factory engine accessory system.

This approach minimizes the risk of assembly problems and ensures that the steering system will operate in a predictable and repeatable manner.

If you are planning a comprehensive repair or upgrade of the steering system area in your Fiat and need other components from the same group, such as a pump, hoses, or fluid reservoir, check the available parts in the Fiat power steering pumps category.

Technical support and service knowledge

When performing service work on a diesel engine and its accessories, it is worth using reliable sources of knowledge. Selecting components by manufacturer markings, proper diagnostics, and assembly procedures are crucial for the durability of the entire system. Detailed information on how to select components by markings, diagnostic principles, and operation can be found in the guide Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which organizes service knowledge and facilitates repair planning.