Mercedes W203 CL203 C 320 Complete Engine 112946 112.946 M112 3.2 218HP WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

Mercedes W203 CL203 C 320 Complete Engine 112946 112.946 M112 3.2 218HP WARRANTY is a petrol power unit from the V6 family, designed for C-Class models, providing smooth operation and distinctly dynamic characteristics. This series of engines is valued for its refined performance, good flexibility, and comfortable compatibility with both automatic and manual transmissions. By maintaining factory specifications, it serves as a solid base for replacing a worn-out unit in your Mercedes.

Specifications and technical data

• SKU: RHD-A1120109545-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1120109545
• Substitutable numbers: A1120109545, A 112 010 95 45, A1120108244, A 112 010 82 44, A1120109645, A 112 010 96 45, A1120108144, A 112 010 81 44
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Mileage: 99 000

Technical characteristics of the 3.2 V6 unit

The presented engine belongs to the Engines category and represents a six-cylinder petrol construction, which in the C 320 model offers power suitable for both city and highway driving. The V6 layout ensures balanced torque delivery, and the petrol fuel system translates into quieter, more refined operation compared to diesel units.

The six-cylinder configuration promotes even loading of the crankshaft and piston system, which in practice means stable operation across the entire rev range. The unit works well with factory Mercedes engine management systems, retaining original ignition and injection maps, which facilitates adaptation after installation.

Application in Mercedes W203 and CL203

The engine was designed with C-Class sedan and coupe bodies in mind, ensuring consistency with the factory engine bay architecture, mounts, and accessories. As a result, replacing the unit with this specific example allows you to maintain the original driving character and predictable behavior of the drivetrain.

In practice, this means:

• easier fitment to factory engine mounts and brackets,
• compatibility with stock cooling and intake systems,
• retention of the manufacturer-intended dynamics during acceleration and overtaking.

For users looking for a unit with a balanced compromise between performance and driving comfort, the 3.2 V6 engine in the C 320 remains an attractive choice, especially in daily-driven vehicles.

Operational parameters and condition

The unit is offered as a used engine, which allows for a significant reduction in repair costs compared to purchasing a new component. The engine's mileage indicates typical road usage rather than extreme track or fleet stress, which is important when assessing the potential for further operation.

This type of petrol engine, with proper maintenance, retains good durability reserves. Before installation, standard preparatory steps are recommended, such as changing the oil, filters, and checking accessory components, which further increases safety and operational predictability after installation.

Benefits of installing this power unit

Choosing the presented engine for your Mercedes C-Class allows you to restore full drivetrain efficiency without the need for costly regeneration of the old unit. Key advantages include:

• retention of the original driving characteristics intended for the C 320 version,
• consistency with factory control and diagnostic systems,
• possibility of economical repair while maintaining the high refinement of the V6.

For workshops and individual users, this means shorter vehicle downtime and a predictable installation process, without the need to modify wiring or mounts.

Selection of other items from the Mercedes Engines group

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as blocks, cylinder heads, or complete long blocks, check out the available parts in the Mercedes Engines category.

Technical support and operation of a used engine

When replacing a power unit, it is worth knowing the typical design issues of various makes and models to make informed service decisions. A good point of reference can be the analysis of failure rates in other popular premium segment cars – you can find it in the article Faulty BMW E90 engines: check what can ruin your budget!, which shows how important proper selection and verification of the unit is before installation.

If you want to maximize the lifespan of a purchased second-hand engine, it is worth familiarizing yourself with practical tips regarding operation and maintenance. Proven advice can be found in the material How to extend the life of used car parts?, which describes, among other things, best practices for handling power units sourced from dismantling.