Composition of Mercedes-Benz Steering Oil Hose OE Code No. LR056319
Ⅰ. Body structure
★ Pipe body
Made of high-strength steel pipe or stainless steel to ensure high-pressure resistance (usually used for oil inlet pipe) and corrosion resistance, suitable for Mercedes-Benz models with precision hydraulic system.
★ Oil inlet and outlet
The inlet port is connected to the booster pump, and the outlet port leads to the steering cylinder. Some Mercedes-Benz models (e.g. 3341, 3344) adopt multi-connector design to meet the needs of the layout of four oil pipes.
★ Connection Fittings
Threaded or snap type connector with metal sealing gasket ensures the sealing with power pump and steering cylinder.
Ⅱ. Auxiliary Components
★ Bypass valve
High-end Mercedes-Benz steering oil hose OE No. LR035469 may be integrated with a bypass valve, which is used to regulate the system pressure, preventing damage to the pump body or oil hose due to high pressure.
★ Seal assembly
Metal or rubber sealing gaskets are installed at the joints to prevent oil leakage; the oil return pipe is fixed with clamps to enhance vibration resistance.
★ Fixing bolts and pipe brackets
The oil pipe is fixed by bolts and brackets to avoid friction or loosening with the chassis parts.



Ⅲ. Layout of system-associated oil pipes (take four oil pipes as an example)
High-pressure oil inlet pipe: connects the booster pump with the steering machine, with a thicker diameter, responsible for delivering high-pressure oil.
Low-pressure oil return pipe: from the steering wheel back to the oil storage tank, the diameter of the pipe is thin, more flexible rubber or nylon material to assist in heat dissipation.
Hydraulic cylinder tubes (two): connect the steering wheel and hydraulic actuator, transfer hydraulic pressure to drive the wheel steering.
Ⅳ. Material and Adaptability
High-pressure piping: steel or stainless steel pipe, suitable for the high-pressure requirements of Mercedes-Benz high-power engines.
Low pressure/return line: oil-resistant rubber or nylon hose, suitable for low temperature or vibration environment.
Specialized models: such as Mercedes-Benz OE No. LR087351 and other models of oil hoses need to match the original specifications to ensure that the interface size and pressure parameters are compatible.
V. Maintenance and Fault Points
Leakage risk: Aging gaskets or loose fittings are common causes of leakage and need to be checked regularly.
Rattling and clogging: Oil contamination or pipeline deformation may lead to steering rattling, which needs to be cleaned or replaced in time.
With the above composition, the Mercedes-Benz steering fluid pipe takes durability and safety into account while safeguarding hydraulic power. Specific models (e.g. 3341, 3344) need to refer to the original technical manual for repair or replacement.

