Mercedes W212 W221 Oil Sump Pan M273 Petrol Engine A2730140703

Mercedes W212 W221 Oil Pan M273 Gasoline Engine is an original lubrication system component designed for gasoline units, engineered by Mercedes for stable engine operation under demanding conditions. The precise geometry of the oil pan ensures proper oil accumulation and return, which translates to uniform lubrication of all key components. A used OEM part allows for maintaining the factory operating parameters of the powertrain without the need for low-quality aftermarket alternatives.

Specifications and technical data

• SKU: A2780101728
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2780101728
• Substitutable numbers: A2780101728, A 278 010 17 28, A2730140703, A 273 014 07 03
• Fuel type: Petrol
• Part type: Oil Sump
• Category: Oil Sumps

Purpose and Function in the M273 Gasoline Engine

The oil pan in the M273 gasoline engine plays a crucial role in the oil circulation system – it serves as a working reservoir where oil is stored, cooled, and prepared for re-aspiration by the oil pump. For units installed in Mercedes E-Class (W212) and S-Class (W221) vehicles, a correctly selected oil pan is essential for maintaining stable oil pressure during both calm driving and dynamic acceleration or braking.

The appropriately shaped interior of the oil pan limits oil foaming and minimizes the risk of temporary lubrication interruptions under high loads. This ensures the gasoline engine maintains proper running characteristics, and components such as the crankshaft, bearings, and timing system are protected from excessive wear.

Benefits of Using an Original Mercedes Oil Pan

Using an original oil pan in the M273 unit offers a range of practical technical benefits:

• factory fit to the engine block and lubrication system,
• maintenance of the manufacturer-specified working oil capacity,
• correct positioning of the oil level sensor and designated drain points,
• compatibility with accessories mounted in the lower part of the engine.

This ensures a predictable installation process, reducing the risk of leaks or fitment issues. The original design also helps maintain compliance with the manufacturer's service documentation, simplifying future vehicle maintenance.

Condition, Fitment, and Service Application

The offered oil pan comes from the Oil Pans category and is a used component, making it an attractive solution for routine repairs and restoring the functionality of M273 gasoline engines in Mercedes W212 and W221 models. It is a practical choice in situations such as mechanical damage to the oil pan (e.g., after impact with an obstacle) or the need for replacement due to leaks.

Before installation, standard servicing procedures are recommended: thorough cleaning of the mating surfaces, flatness check, application of an appropriate gasket or sealant compound in accordance with manufacturer recommendations, and replacement of the oil with fresh fluid matching the gasoline engine's specifications. A component prepared in this way allows for seamless integration with the existing lubrication system.

Assistance with Selection and Expanded Repair Scope

When selecting an oil pan for a specific gasoline engine configuration, it is advisable to verify compatibility with the M273 unit and the W212 or W221 body to ensure proper fitment with other components of the lower engine section. In case of extensive overhaul work, the oil pan is often replaced concurrently with other lubrication system components, allowing for a comprehensive refresh of this area and reducing the risk of future leaks.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and require other parts from the same group, such as other oil pans, covers, or lubrication system components, check the available parts in the Mercedes Oil Pans category.

For users interested in a broader context of Mercedes powertrain operation and the impact of accessories on engine durability, technical materials concerning other popular designs may be useful. For this purpose, it is worth familiarizing yourself with an article describing the characteristics and refurbishment of the OM642 diesel engine, which discusses, among other things, the influence of injectors and turbochargers on performance – you can find it here: Second Life for the Mercedes OM642 Engine – How Injectors and Turbocharger Restore Power to the 3.0 V6 CDI.