Engine Exhaust Manifold Mercedes W203 W204 W209 M272 Petrol Left N/S Manifold

The Mercedes W203 M272 Petrol Engine Manifold Left is an original exhaust system component from the Exhaust Manifolds group, designed for M272 petrol engines. The part is fitted to the left side of the vehicle, allowing for precise replacement of the factory component without altering the engine's construction.

Specifications and technical data

• SKU: A2721400109
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2721400109
• Substitutable numbers: A2721400109, A 272 140 01 09, BG
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Manifolds & Headers

Purpose and Technical Function

The presented exhaust manifold has been specifically designed for M272 series petrol engines installed in the Mercedes W203 model. Its function is to efficiently evacuate exhaust gases from the left cylinder head, which contributes to stable engine operation, correct system pressure, and proper interaction with downstream exhaust components.

Thanks to its factory-designed channel geometry, the manifold ensures optimal exhaust gas flow, helping to maintain correct engine operating parameters, smooth running, and compatibility with the factory control unit maps. This is particularly important for petrol engines, where uniform cylinder emptying translates to combustion efficiency.

Construction and Vehicle Fitment

The manifold is intended for installation on the left side of the engine bay, eliminating the risk of selection errors. The construction is based on the original Mercedes design, ensuring the preservation of:

• factory mounting points to the cylinder head and the downstream exhaust system,
• correct exhaust channel routing,
• compatibility with the accessories designed for the M272 engine.

This precise fit facilitates installation, minimizes the need for modifications, and maintains the integrity of the entire powertrain. For workshops, this means predictable working times, and for users, greater confidence in operation after replacement.

Operational Characteristics of a Used Manifold

The offered component is a used part, sourced from disassembly, and is classified as a used exhaust manifold. This type of part is particularly attractive for repairs where maintaining the original manufacturer's specifications while optimizing costs is crucial. A manifold of this type allows you to:

• recreate the factory exhaust gas flow characteristics in the petrol engine,
• maintain compatibility with the standard Mercedes exhaust system,
• avoid fitting issues typical of aftermarket alternatives with different geometries.

The choice of an original, used component is often preferred by workshops specializing in the Mercedes brand, as it helps maintain the structural consistency of the entire powertrain.

Application in Performance Exhaust Systems

M272 petrol engines are frequently used both in daily driving and in projects aimed at improving performance. An efficient left-side exhaust manifold is the foundation for further modifications, such as changing downstream exhaust sections or using sport components. If you want to better understand the relationships between the manifold, catalytic converter, and the rest of the system, it is worth reading the guide: Performance Exhaust System: Used Manifolds and Sport Catalytic Converters on the Road.

Expanding the Mercedes Exhaust System

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and require other components from the same group, such as additional manifolds, connecting sections, or mounting elements, check the available parts in the Mercedes Exhaust Manifolds category.

Summary

The Mercedes W203 M272 Petrol Engine Manifold Left is a technically matched, used exhaust system component designed for this series of petrol engines. Its original construction, dedicated left-side placement, and compatibility with the factory Mercedes design make it a practical solution for workshops and users who expect predictable installation and the preservation of standard engine operating parameters.