Mercedes-Benz W203 W208 W211 Transmission Oil Pan Mounting Hole A1120140133

Mercedes-Benz W203 W208 W211 Transmission Oil Pan Mounting Hole is an original lubrication system component designed for the M112 engine family in Mercedes C-Class, E-Class, and CLK models. This carefully engineered plug ensures a tight seal for the oil pan, which translates into stable engine operating conditions and reduces the risk of leaks. By choosing this part, you are opting for a solution tailored to the specific design of your Mercedes.

Specifications and technical data

• SKU: A1120140133
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1120140133
• Substitutable numbers: A1120140133, A 112 014 01 33, KZ
• Category: Other Transmission & Drivetrain

Purpose and technical function

The oil pan plug in the M112 engine is responsible for the controlled sealing of one of the technological openings in the oil pan housing. A properly selected component:

• maintains the integrity of the lubrication system in the lower part of the engine,
• reduces the risk of oil leaks in the critical area of the oil pan,
• supports stable oil pressure during engine operation.

For M112 units, using the correct plug is essential for maintaining proper engine performance parameters, especially during long-term operation and under higher loads.

Compatibility with Mercedes models

The Mercedes-Benz W203 W208 W211 Transmission Oil Pan Mounting Hole has been developed for use in popular Mercedes models, such as the W203, W208, and W211. This ensures a perfect fit with the oil pan geometry and the mounting points specified by the manufacturer, without the need for modifications or adaptations.

Thanks to the preservation of factory dimensions and shape, the component can be used both for standard replacement of a damaged plug and during major service work in the lower engine area, e.g., when removing, cleaning, or resealing the oil pan.

Component characteristics and installation

The offered plug comes from disassembly, which allows for compliance with the original manufacturer's specifications. Such components are designed to:

• ensure proper adhesion to the oil pan surface,
• maintain a stable connection under varying temperatures and vibrations,
• allow for service removal using standard workshop tools.

During installation, it is recommended to follow the service procedures provided for M112 engines, including proper preparation of the contact surface and a leak check after the work is completed.

Why it is worth using an original oil pan plug

In a lubrication system, even a seemingly simple element like a plug affects operational safety. Using a solution consistent with the original Mercedes design:

• minimizes the risk of mismatch and leaks,
• supports the long-term, stable operation of the M112 engine,
• facilitates future diagnostics and service, as the design remains consistent with the manufacturer's technical documentation.

This is particularly important for vehicles used intensively or in varied road conditions, where the lubrication system is exposed to increased loads.

Engine area and selection of other components

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 additional plugs, small mounting parts, or supplementary service components, check out the available parts in the Other Mercedes category.

When working with engines and accessories, it is also worth paying attention to the selection of used components. In the context of major engine or transmission repairs, an expert guide explaining how to safely choose parts from the secondary market may be helpful – more information can be found in the article Why it is worth buying used transmissions and engines – facts instead of myths.

Technical knowledge and project development

For those interested in the broader context of engine design and the differences between standard and sports versions, comparative analyses of solutions used by different brands can be an interesting supplement. For example, the article Audi RS vs other models – what is hidden under the hood and chassis? discusses how changes in the engine, brakes, and chassis affect a car's characteristics – this knowledge can be helpful when planning your own modifications and service strategies, including for vehicles from other manufacturers.

Summary

Mercedes-Benz W203 W208 W211 Transmission Oil Pan Mounting Hole is a practical component designed to work in the demanding environment of an engine lubrication system. A properly selected plug supports the tightness of the oil pan, the stability of M112 engine parameters, and the predictable behavior of the engine in daily use. It is a sensible choice for repairs and inspections of the lower engine area in Mercedes models where compliance with the factory design and service reliability are paramount.