Visual condition of the part

The product shows signs of use visible in the photos.

Visual condition of the part

The product has traces of use visible in the photos.

The Mercedes W204 M271 Exhaust Manifold – Hot Side Turbo is an original turbocharger and parts component designed for the M271 petrol engines fitted to W204 C-Class models. This used exhaust manifold provides a solid foundation for professional repair or upgrade of the turbocharging system in Mercedes vehicles.

Specifications and technical data

• SKU: A2710903480-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2710903480
• Substitutable numbers: A2710903480, A 271 090 34 80
• Location on the vehicle: Front
• Fuel type: Petrol
• Category: Turbos & Parts

Purpose and function in the supercharging system

The hot-side turbocharger in the M271 engine is responsible for precisely diverting exhaust gases from the cylinder head and directing them to the turbocharger impeller. A properly selected exhaust manifold ensures:

• stable exhaust gas pressure at the turbine inlet,
• correct response to gas throughout the entire rev range,
• maintaining factory power and torque parameters,
• reducing thermal energy losses in the exhaust system.

The element is designed for installation in the front of the vehicle, in the engine compartment, in the immediate vicinity of the drive unit and turbocharger.

Construction and technical characteristics

The hot-side turbo exhaust manifold in the M271 engine is made of a high-temperature-resistant alloy, designed to withstand high thermal and pressure loads. The manufacturer designed the structure to:

• ensure uniform flow of exhaust gases from individual cylinders,
• minimize turbulence and unfavorable pressure wave reflections,
• maintain tightness of the connection with the cylinder head and turbocharger,
• reduce thermal stresses and the risk of cracks in long-term use.

The original geometry of the exhaust gas channels is crucial for maintaining the factory operating characteristics of the turbine and correct cooperation with the engine control system in petrol versions.

Benefits of using the original exhaust manifold

Using the original hot-side turbo in the Mercedes W204 with the M271 engine allows the engine to maintain its operating parameters as intended by the manufacturer. Key advantages include:

• Factory fit – correct positioning in relation to the cylinder head, turbocharger and engine accessories, without the need for modifications.
• Stable operation at high temperatures – designed for long-term thermal loading typical of supercharged petrol engines.
• Optimal exhaust gas flow – maintaining appropriate flow dynamics, which translates into predictable turbine response.
• Compatibility with the control system – no need to modify control maps or adapt sensors resulting from different collector geometry.

Condition, assembly and use in tuning

The offered component is in used condition, allowing for cost-effective repair of the supercharger system while maintaining its original specifications. Before installation, we recommend standard inspection of the sealing surfaces for leaks and checking for any signs of overheating, in accordance with service procedures for petrol engines.

For those planning to modify the supercharging system in a Mercedes with an M271 unit, using the original exhaust manifold as a base allows for:

• safe increase of power within the limits provided by the factory design,
• maintaining correct cooperation with the serial turbocharger,
• easier integration with other exhaust and intake system components.

If you want to better plan your engine modifications using aftermarket components, it's worth checking out the guide: How to increase engine power with used turbocharger components .

Other exhaust manifolds and hot side turbo components for Mercedes

If you are looking for other exhaust manifolds and turbocharger hot sides for Mercedes, check the exhaust manifolds and turbocharger hot sides for Mercedes available in our store to select the right part for your specific engine version and vehicle generation.