Mercedes W221 M273 Petrol Engine Exhaust Manifold Right O/S A2731400009

The Mercedes W221 M273 Right Exhaust Manifold A2731400009 is an original exhaust system component designed for M273 gasoline engines in the W221 body style. The right side of the manifold is responsible for efficient exhaust gas removal from the corresponding cylinder bank, which directly impacts engine smoothness and parameter stability. Thanks to its factory geometry and precise fit for the specific engine configuration, it ensures correct exhaust gas flow and maintains factory performance.

Specifications and technical data

• SKU: A2731400009
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2731400009
• Substitutable numbers: A2731400009, A 273 140 00 09
• Location on the vehicle: Right
• Fuel type: Petrol
• Category: Exhaust Pipes & Tips

Exhaust Manifold Purpose and Function

The presented exhaust manifold is a component of the Exhaust Pipes and Tips system for Mercedes models with M273 engines, fitted in the W221 body. It collects exhaust gases from the cylinders on the right side of the engine and directs them to further exhaust system components, allowing for the maintenance of appropriate back pressure and the correct operation of sensors and other subsystems.

Its dedication to gasoline engines means that the channel geometry, cross-sections, and mounting points are optimized for the M273 engine's operating characteristics, helping to reduce unwanted turbulence and supporting uniform cylinder emptying.

Construction and Fit for the M273 Unit

The manifold is designed specifically for the M273 engine's exhaust system, taking into account cylinder head placement, channel exit angles, and space within the W221 engine bay. This ensures:

• factory mounting points to the cylinder head and the rest of the exhaust system,
• appropriate clearance from body components and engine accessories,
• compatibility with factory heat shields and brackets.

Such a precise fit minimizes the risk of stress, leaks, and unwanted vibrations, and also facilitates installation in service conditions. The original design also supports stable exhaust system operation across the full load range.

Vehicle Placement and Fuel Type

This component is intended for installation on the right side of the engine, which is crucial for part selection – left and right manifolds differ in geometry and channel layout. Its application in a gasoline engine means the manifold is adapted to the higher exhaust temperatures typical for these units and to the flow characteristics resulting from spark ignition.

Correct selection of the mounting side and fuel type allows for the preservation of the factory engine operating characteristics, avoidance of fitting issues, and ensures proper cooperation with other exhaust system components.

Characteristics of a Used Part

The offered exhaust manifold is a used part, sourced from disassembly, making it an attractive solution for users seeking original components at a reasonable price. Unlike aftermarket alternatives with uncertain geometry, an original part maintains factory flow and fitting parameters, which is particularly important for advanced Mercedes gasoline engines.

Choosing a used OEM manifold helps reduce repair costs while maintaining high manufacturing quality and compatibility with the vehicle's factory exhaust system.

Support for Exhaust System Selection and Expansion

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Mercedes and need other parts from the same group, such as pipe sections, connectors, or exhaust tips, check the available parts in the Mercedes Exhaust Pipes and Tips category.

When selecting used exhaust system components, it's worth paying attention to compatibility with the specific engine version, mounting side, and fuel type. For those interested in a broader perspective on the cost-effectiveness of using disassembled components, an article describing the benefits of such solutions may be helpful – you can find it here: Used Parts – Benefits, Savings, and What to Consider When Choosing.

Summary

The Mercedes W221 M273 Right Exhaust Manifold A2731400009 is an original, used exhaust system component designed for M273 gasoline engines, installed on the right side of the engine. It ensures proper exhaust gas flow, maintains factory operating parameters, and is compatible with other system components. This is a practical solution for users who want to restore the functionality of their Mercedes W221's exhaust system by using a factory component with a favorable price-to-quality ratio.