Mercedes Benz A B Class W169 W245 M266 Throttle Housing Assy Petrol A2661410525

Mercedes Benz A B Class W169 W245 M266 Throttle Housing Assy is an original intake system component designed for petrol engines, responsible for precise control of the intake air volume. Thanks to its factory-spec design, it ensures consistency with the vehicle's electronics and stable operation of the power unit. This is a solution for users expecting reliable fitment, correct idle performance, and predictable throttle response.

Specifications and technical data

• SKU: A2661410525
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2661410525
• Substitutable numbers: A2661410525, A 266 141 05 25, BG
• Fuel type: Petrol
• Category: Throttle Bodies

Purpose and function of the throttle body

The throttle body in a petrol engine plays a key role in regulating the amount of air supplied to the intake manifold, thereby influencing the mixture composition and the engine's operating smoothness. For Mercedes A and B Class models of the W169 and W245 generations with the M266 engine, using a dedicated throttle body helps maintain:

• stable idle speed,
• smooth throttle response,
• proper cooperation with the factory engine control unit (ECU),
• consistency with exhaust emission control systems.

A properly selected throttle body reduces the risk of fluctuating idle, engine stalling when approaching intersections, and adaptation issues within the ECU.

Benefits of using an original Mercedes throttle body

Using a component from the same design family as the factory part ensures mechanical and electrical compatibility with the intake system and wiring harness in the Mercedes W169 and W245. This means:

• correct diameters and mounting points on the intake manifold,
• compatible electrical connector and position sensor signals,
• proper throttle plate opening characteristics,
• easier adaptation in the ECU without the need for software modifications.

For the user, this translates into predictable vehicle behavior, no need for wiring modifications, and preservation of the factory operating parameters of the petrol engine.

Characteristics of the used component

The offered throttle body comes from dismantling and is classified as a used part, which represents a reasonable compromise between cost and functionality. This type of part is particularly attractive for maintenance repairs where the priority is to maintain the original intake system design while limiting expenses. A used throttle body can be a good choice in situations where the current component shows signs of wear, such as unstable idle, ECU errors related to plate position, or adaptation problems after cleaning.

Selection and application in a petrol system

A throttle body intended for a petrol engine requires compatibility with the fuel type, as the control characteristics and cooperation with the injection system differ from solutions used in diesel units. In the case of this part, the fitment for the M266 engine in the Mercedes W169/W245 means:

• design tailored to the specific operation of a petrol unit,
• cooperation with appropriate injection and ignition maps,
• maintenance of proper throttle opening and closing dynamics,
• correct communication with sensors and the control module.

As a result, installing a throttle body dedicated to a petrol system helps reduce the risk of diagnostic errors and ensures consistency with the vehicle's factory configuration.

Expansion of the intake system in a Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional throttle bodies, control elements, or compatible intake components, check out the available parts in the Mercedes Throttle Bodies category.

Technical support and selection of used parts

When planning broader service work, it is worth paying attention to the general principles of selecting used components and their impact on vehicle handling and safety. Additional information on design differences and practical aspects of using aftermarket parts can be found in the article Standard vs. sports suspension – design differences and is it worth buying used suspension parts?, which organizes key issues related to the operation of used subassemblies.

Summary

Mercedes Benz A B Class W169 W245 M266 Throttle Housing Assy is a functional choice for drivers looking for an original solution for the intake system in a petrol engine. Using a dedicated throttle body promotes stable engine operation, correct throttle response, and compatibility with the vehicle's factory electronics, which is particularly important for professionally performed repairs and upgrades.