Mercedes Benz A B W169 W245 Ignition Spark Coil Cable Lead Petrol A2661500718

Mercedes A B W169 W245 M266 Ignition Cable is an original high-voltage system component designed for M266 series gasoline engines in A-Class and B-Class models. It ensures stable transmission of ignition energy to the spark plugs, resulting in smooth engine operation and predictable throttle response. Thanks to its precise fit for the specific rear ignition system configuration, it is a safe service solution for discerning Mercedes owners.

Specifications and technical data

• SKU: A2661500718
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2661500718
• Substitutable numbers: A2661500718, A 266 150 07 18, BG
• Location on the vehicle: Rear
• Fuel type: Petrol
• Category: Ignition Coils

Purpose and Role in the Ignition System

The ignition cable is dedicated to gasoline engines where maintaining the correct spark quality across the entire RPM range is crucial. This component operates in the rear part of the engine bay, where it is exposed to elevated temperatures and vibrations. Therefore, its construction must ensure stable high-voltage conduction and resistance to operational loads.

A properly selected ignition cable reduces the risk of misfires, power drops, or rough idling. This is important for both driving comfort and the protection of other system components, such as ignition coils or spark plugs.

Compatibility with M266 Engine

The discussed cable has been designed with the specific architecture of the M266 engine used in Mercedes A-Class and B-Class in mind. This means a tailored length, appropriate connector angles, and terminal designs that interface with factory sockets in the cylinder head and on the coils. This ensures an organized installation without the need for modifications or adapters.

Such a precise fit is particularly important in compact engine bays where installation space is limited, and each component must be routed according to the factory path. Using a cable dedicated to the M266 helps maintain the correct ignition system geometry and reduces the risk of mechanical damage to the insulation.

Operational Characteristics

The ignition cable operating in the rear part of the engine is exposed to contact with hot engine components and constant micro-vibrations. The design of this component has been prepared to ensure:

• adequate electrical insulation under high-temperature conditions,
• stable connection with spark plug and coil sockets,
• resistance to typical operational loads in gasoline engines.

This allows the cable to operate consistently, supporting even fuel mixture combustion and reducing the risk of ignition errors registered by the engine control unit.

Condition and Service Application

The offered component is a used part intended for service applications in Mercedes A-Class and B-Class vehicles with the M266 engine. Choosing a used ignition cable allows for an economical repair of the system while maintaining the original manufacturer's specifications. This is a particularly beneficial solution for phased replacement of ignition components, aiming to restore proper engine operation without altering its design.

Integration with the Ignition Coil System

The cable works with the factory coil system, creating a coherent high-voltage path from the coil to the spark plug. When diagnosing ignition problems, it is worth considering this element as part of a single system where both the cables and the coils themselves are important. If you plan a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as individual coils, coil modules, or complete ignition harnesses, check the available parts in the Mercedes Ignition Coils category.

For drivers interested in a broader context of modifications and the use of used components in sporty cars, additional information can be found in an article describing the specifics of the John Cooper Works version and the possibilities of upgrading standard MINI models – you can find it here: MINI John Cooper Works – What Sets It Apart and How to Upgrade Your MINI?.