Citroen Relay Jumper Peugeot Boxer Oil Power Steering Fluid Tank Bottle 4009V0

Citroen Relay Jumper Peugeot Boxer Oil Power Steering Fluid Tank Bottle is a hydraulic system component designed to work with the power steering system in commercial vehicles. It is responsible for the safe storage of fluid, its stable delivery to the pump, and maintaining the correct operating pressure, which translates into predictable and comfortable vehicle handling. As a part of the Power steering pumps group, it constitutes an important link in the entire hydraulic circuit.

Specifications and technical data

• SKU: 4009V0
• Mark: Citroën
• Condition: Used
• OEM Part Number: 4009V0
• Substitutable numbers: 4009V0, KD
• Category: Power Steering Pumps

Function and role of the power steering reservoir

The power steering reservoir in the steering system is responsible for maintaining the correct amount of fluid, its venting, and the filtration of mechanical impurities. A properly selected and sealed reservoir reduces the risk of cavitation in the pump, decreases system operating noise, and stabilizes pressure, which is particularly important in heavier commercial vehicles such as the Fiat Ducato or Peugeot Boxer.

The proper design of the reservoir also helps maintain a constant operating temperature of the fluid, which affects the service life of the pump, hoses, and steering gear. As a result, the power steering system maintains predictable operating characteristics both when maneuvering at low speeds and when driving under full load.

Purpose and vehicle compatibility

The presented reservoir is a component intended for use in power steering systems used in popular light commercial vehicles, such as the Fiat Ducato and Peugeot Boxer. It has been designed to work with the factory pump and hoses, which facilitates installation and allows for maintaining the original operating characteristics of the steering system.

Thanks to the use of a solution consistent with the factory specification, the reservoir works with standard mounts and hoses, which limits the need for modifications. This is a practical solution for servicing fleet vehicles, where repeatability, ease of installation, and the possibility of quick replacement in workshop conditions are important.

Benefits of using an original Citroën solution

The product comes from the Citroën line, which means maintaining the quality standards of the vehicle manufacturer from this group. Properly selected port geometry, operating capacity, and internal reservoir design promote stable operation of the power steering system and reduce the risk of problems such as aeration or uneven steering assistance.

The used component allows for economical repair of the system while maintaining the factory design concept. This solution is particularly beneficial in intensively used vehicles, where a reasonable service cost is important while maintaining the correct operating parameters of the hydraulic system.

Practical installation and maintenance tips

When replacing the power steering reservoir, it is worth paying attention to:

• the condition of the supply and return hoses (tightness, flexibility, lack of cracks),
• the cleanliness of the fluid in the system and the potential need for its replacement,
• proper venting of the system after installation to avoid noise and drops in steering efficiency,
• checking the mounts and brackets so that the reservoir operates without excessive vibrations.

Regular fluid level checks and visual inspection for potential leaks allow for early detection of leaks and prevention of pump damage. This is particularly important in commercial vehicles, where the power steering system is heavily loaded due to frequent maneuvers and high curb weight.

Expanding Citroën power steering system service

If you are planning a comprehensive repair or upgrade of the steering system area in your Citroën and need other elements from the same group, such as hoses, pumps, or steering gears, check the available parts in the Citroen Power steering pumps category.

To deepen your knowledge about the operation of hydraulic systems in a vehicle and the principles of selecting components by OEM and reference numbers, a guide describing the diagnostics and operation of supply components may be helpful, available in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", which discusses a practical approach to servicing systems with working fluids.