Mercedes W415 OM607 Diesel Transmission Hose Oil Cooling Line Tube Pipe 921700R

Mercedes W415 OM607 Diesel Transmission Hose Oil Cooling Line Tube Pipe is a precision component of the oil supply system, responsible for stable lubrication of the turbocharger in a diesel engine. By ensuring proper delivery of operating oil, it guarantees safe turbine operation, reduces the risk of seizure, and supports the durability of the power unit. This solution is dedicated to Mercedes vehicles with a manual transmission, where reliability and repeatable performance parameters are essential.

Specifications and technical data

• SKU: 921700R
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 921700R
• Substitutable numbers: 921700R
• Fuel type: Diesel
• Gearbox type: Manual
• Category: Engine Oil Coolers & Lines

Function and role of the oil pipe in the turbocharging system

The turbocharger lubrication oil pipe in a diesel engine is responsible for delivering the correct amount of oil under pressure to the turbine bearings. Proper flow of the lubricant:

• stabilizes the operating temperature of the rotor and turbine housing,
• reduces wear on plain bearings and rotating components,
• minimizes the risk of oil leaks into the intake or exhaust system,
• supports the maintenance of factory performance for the OM607 unit.

In the event of a drop in turbocharger lubrication efficiency, replacing the oil pipe is one of the key service actions that allow for restoring the correct operating conditions of the turbocharging system.

Designed for Diesel engines and manual transmissions

The presented pipe has been designed with diesel units in mind, where thermal and pressure loads are particularly demanding. Its use in a configuration with a manual transmission means it is adapted to the typical drivetrain found in many Mercedes W415 units with the OM607 engine, which facilitates servicing and limits the need for modifications.

Thanks to this, the component can be used both for standard replacement of worn parts and for repairs following a turbocharger failure, when it is necessary to restore full flow capacity and the correct direction of oil circulation.

Category Oil coolers and lines – consistency of the lubrication system

The turbocharger lubrication oil pipe belongs to the group of elements defined as Oil coolers and lines, i.e., components responsible for the transport and condition of oil in the engine. In practice, this means it works in conjunction with other lines and heat exchangers, creating a coherent lubrication and oil cooling system. A properly selected and sealed oil line:

• ensures stable pressure in the turbine lubrication circuit,
• minimizes the risk of aeration or cavitation in the system,
• allows for maintaining the proper oil temperature in the turbocharger area.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as oil supply lines, return lines, or components working with the heat exchanger, check the available parts in the Mercedes Oil coolers and lines category.

Used condition and benefits of choosing original parts

The offered oil pipe comes from the secondary market, which allows for combining an attractive purchase cost with the characteristics of an original component. In practice, this means:

• preservation of the factory geometry of the line and mounting points,
• compatibility with the stock OM607 engine lubrication system,
• possibility of installation without interfering with the power unit's construction.

Before installation, a standard service procedure is recommended: checking for obstructions, assessing the condition of the connection surfaces, and using new seals in accordance with the vehicle manufacturer's guidelines.

Operation, diagnostics, and technical knowledge

An efficient lubrication and oil cooling system has a direct impact on the lifespan of the turbocharger and the entire power unit. In the case of symptoms such as power loss, smoke, or increased engine operating temperature, it is worth analyzing the condition of the oil lines and associated components. Extended information on the impact of the cooling system and oil circulation on engine durability can be found in the article Engine cooling system – overheating, repair, and used radiators, which discusses practical aspects of diagnostics and service.