Mercedes CL203 C208 W208 CLK 320 Motor Timing Cover Oil Filter M112 1120150902

Mercedes CL203 C208 W208 CLK 320 Motor Timing Cover Oil Filter is a precision timing system component designed for M112 series petrol engines used in mid-size CLK models. The robust construction of the cover ensures stable guidance for timing chains and belts, as well as effective protection of the mechanism against contamination and external damage. By maintaining factory geometry, it provides a reliable base for professional repair or timing system replacement in Mercedes vehicles of this series.

Specifications and technical data

• SKU: R1120150902
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: R1120150902
• Substitutable numbers: R1120150902, R11 201 509 02, 1120150902
• Fuel type: Petrol
• Category: Timing Covers

Purpose and function in the M112 engine

The timing cover in the M112 petrol engine is responsible for tightly sealing the workspace of the timing chains and belts and ensuring proper guidance of the drive components. In units used in Mercedes CLK 320 models, its task is to:

• maintain the correct position of chains and sprockets relative to the crankshaft and camshafts,
• limit oil loss and ensure proper lubrication of timing components,
• protect the mechanism against dust, moisture, and small foreign objects,
• stabilize the operation of the entire timing drive at high petrol engine speeds.

A properly selected timing cover has a direct impact on the durability of the chain, sprockets, and tensioners, and thus on the refinement and reliability of the power unit.

Benefits of using an original Mercedes timing cover

Using a factory cover in the M112 engine in CLK 320 models allows for maintaining the parameters specified by the manufacturer. Key advantages include:

• Precise fit to the engine block – factory geometry of mounting points and sealing surfaces is preserved.
• Compatibility with the stock timing chain and belt system – no need for modifications or adjustments.
• Consistency with the factory lubrication system and oil channels in the petrol engine.
• Possibility of using standard gaskets and mounting elements intended for the M112 unit.

As a result, this timing cover is highly recommended for repairs where maintaining original engine performance parameters and minimizing the risk of leaks is a priority.

Application in Mercedes CLK models

The presented timing cover is intended for M112 series petrol engines mounted in CL203, C208, and W208 bodies in CLK 320 versions. This means it is used in popular coupé and cabrio variants of this generation, where it is important to maintain:

• stable operation of the power unit at higher speeds,
• correct synchronization of camshafts with the crankshaft,
• proper tightness of the timing system under daily operating conditions.

Choosing an original timing cover is particularly important in vehicles driven dynamically, where the timing system operates under higher loads and requires stable, predictable guidance.

Characteristics of the used component

The timing cover comes from dismantling, which allows for economical repair while maintaining a component consistent with Mercedes factory specifications. A used element of this type is a good choice when:

• the original cover in the vehicle has suffered mechanical damage (cracks, broken mounts),
• leaks have occurred in the timing area,
• it is necessary to replace the cover during a major overhaul of the petrol engine.

Before installation, a standard preparation procedure is recommended, including thorough cleaning, inspection of mating surfaces, and the use of new gaskets in accordance with the manufacturer's technology. This approach increases the chance of trouble-free operation after repair.

Part selection by numbers and technical support

When selecting a timing cover for a specific Mercedes CLK 320 with an M112 engine, it is worth verifying compatibility by OEM number and interchangeable numbers, as well as vehicle data. If in doubt, a detailed guide on identifying components by factory numbers and car data will be helpful – you can find it in the article Guide: how to choose the right car part by VIN and OEM number, which describes the verification process and a list of questions for the seller step by step.

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 covers, lids, or drive guards, check the available parts in the category Mercedes timing chain and belt covers.