Mercedes-Benz A B Class W169 W245 Rear Left N/S Engine Mount A1692420401

Mercedes-Benz A B Class W169 W245 Rear Left N/S Engine Mount is a factory-original powertrain mounting component designed for A and B Class models. This used mount, belonging to the Engine mounts group, stabilizes the connection between the engine and the gearbox in the rear left section of the vehicle, reducing unwanted vibrations and improving the overall refinement of the powertrain.

Specifications and technical data

• SKU: A1692420401
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1692420401
• Substitutable numbers: A1692420401, A 1692420401, A 169 242 04 01
• Location on the vehicle: Rear, Left
• Category: Engine Mounts

Purpose and vehicle placement

The presented mount operates in the rear left area of the powertrain, where it is responsible for transferring loads between the engine, the gearbox, and the chassis. This placement allows for effective control of the powertrain unit during acceleration, engine braking, and gear changes, which translates into stable handling and reduced cabin noise.

Thanks to its precise fit for the construction of Mercedes W169 and W245 models, installation is predictable, with no need to modify mounting points. This solution is particularly beneficial for servicing vehicles used in urban environments, where frequent starting and load changes place significant stress on powertrain mounting components.

Technical and functional characteristics

The mount belongs to the group of components responsible for supporting and positioning the powertrain, working in conjunction with other engine and gearbox mounts. Its tasks include:

• maintaining the correct geometry of the engine position relative to the chassis,
• limiting excessive movement during load changes,
• working with other mounts to dampen vibrations transmitted to the body,
• stabilizing the gearbox along the longitudinal and transverse axes of the vehicle.

Selecting the correct mount for this location is important for the durability of drive joints, half-shafts, and other drivetrain components. Using an original solution allows for maintaining the factory powertrain operating characteristics, which is essential both in daily use and during more dynamic driving.

Benefits of using an original engine and gearbox mount

Choosing a component from the same design line as the factory mounts provides a number of practical benefits. The most important include:

• Proper fit for Mercedes construction – maintaining original mounting points and mounting geometry.
• Consistent cooperation with other components from the Engine mounts group – even load distribution throughout the entire system.
• Reduced risk of incorrect powertrain alignment, which could lead to accelerated wear of other sub-assemblies.
• Compatibility with standard service procedures without the need for additional modifications.

For workshops and private users, this means predictable installation, easier diagnostics, and maintaining powertrain performance consistent with the manufacturer's specifications.

Application in service and powertrain upgrades for Mercedes

The mount in the rear left part of the powertrain is often replaced during comprehensive engine mount service, especially when symptoms such as excessive vibrations, knocking during start-up, or noticeable jerking during gear changes occur. Replacing this component in combination with other mounts allows for restoring predictable powertrain behavior and improving driving comfort.

If you are planning a comprehensive repair or upgrade of the engine and gearbox area in your Mercedes and need other components from the same group, such as additional mounts, brackets, or vibration-damping elements, check the available parts in the Mercedes engine mounts category.

Technical support and service knowledge

When working on the drivetrain, it is worth using reliable sources of knowledge regarding the specifics of Mercedes units. In the context of servicing and refreshing the powertrain, material describing engine characteristics, typical faults, and the impact of individual components on operating refinement can be helpful. An example is the article "The second life of the Mercedes OM642 engine – how injectors and a turbocharger restore the power of the 3.0 V6 CDI", which shows how properly selected components and correct diagnostics affect the durability of the entire system.