Mercedes W169 W245 M266 Ignition Spark Plug Coil Cable Lead Petrol A2661501318

Mercedes W169 W245 M266 Ignition Spark Plug Coil Cable Lead is a high-voltage system component designed for petrol engines, ensuring stable transmission of ignition energy to the spark plugs. Thanks to its precise fit for the M266 unit in A-Class and B-Class models, the cable operates in accordance with factory ignition characteristics. This is a solution for users who expect reliable starting, smooth engine operation, and proper cooperation with ignition coils.

Specifications and technical data

• SKU: A2661501318
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2661501318
• Substitutable numbers: A2661501318, A 266 150 13 18
• Fuel type: Petrol
• Category: Ignition Coils

Purpose and function in the ignition system

The ignition cable in a petrol engine is responsible for the safe and controlled transmission of high voltage from the coil to the spark plug. In the M266 unit, using the correct cable has a direct impact on:

• spark stability across the full RPM range,
• idle smoothness,
• throttle response during acceleration,
• reduction of misfires and jerking.

A well-selected cable working with Ignition coils helps maintain combustion parameters at the levels intended by the manufacturer, which promotes the maintenance of proper power and fuel consumption.

Compatibility with the M266 engine and Mercedes vehicles

Mercedes W169 W245 M266 Ignition Spark Plug Coil Cable Lead has been designed with the specific architecture of the M266 engine used in the brand's compact models in mind. The appropriate shape, length, and connector type allow for proper cable routing in the engine bay, while maintaining the required clearances from heating and moving parts.

Such a fit reduces the risk of insulation abrasion, accidental arcing, and interference in the ignition system's operation. For the user, this means more predictable vehicle behavior in daily use, especially when frequently starting the engine for short distances.

Technical and operational characteristics

The cable is intended for use with engines powered by petrol, where efficient high-voltage transmission is required while maintaining appropriate dielectric strength. The cable construction takes into account:

• insulation adapted to operate in the elevated temperatures of the engine bay,
• connectors designed for the sockets used in the M266 unit,
• resistance to typical vibrations and oscillations occurring in compact Mercedes models.

A cable configured in this way helps reduce electromagnetic interference, which is important for the proper operation of the engine control unit and surrounding sensors. In practice, this translates into more stable ignition and repeatable engine performance parameters.

Application in service and diagnostics

Replacing the ignition cable is one of the basic service actions for symptoms such as misfires, rough cold running, or occasional jerking under load. Using a cable dedicated to the M266 engine facilitates:

• elimination of errors related to incorrect length or terminal type,
• maintenance of the original ignition harness routing,
• diagnostics of potential faults in combination with ignition coils and spark plugs.

For workshops and users servicing their vehicles themselves, this is a component that allows for an orderly restoration of proper ignition system operating conditions without interfering with other subassemblies.

Component condition and benefits of choosing a used part

The offered cable comes from a group of used parts, which allows for economical repair while maintaining compliance with factory specifications. For many users, this is a reasonable compromise between cost and functionality, especially in vehicles used daily, where ignition system efficiency and fitment for a specific engine are what count.

Choosing such a solution is particularly beneficial in situations where a quick replacement of a component is necessary to eliminate a fault, and the priority is to maintain the original configuration of the ignition system in the 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 high-voltage cables, individual coils, or complete ignition modules, check the available parts in the Mercedes ignition coils category.

For drivers interested in a broader approach to upgrading vehicle equipment, including the use of proven components from higher model versions, a guide on retrofitting may be helpful – more information can be found in the article on professional retrofitting with used parts in BMW and VAG group cars.