Ignition Coil Mercedes W202 W203 M111 Cable Connector A0001501780

Mercedes W202 W203 Ignition Coil A0001501780 is an original ignition system component from the Mercedes group, designed for use in M111 series engines. This product from the Wires, Harnesses, and Connectors category ensures stable spark generation, which translates to smooth engine operation and proper response to load.

Specifications and technical data

• SKU: A0001501780
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0001501780
• Substitutable numbers: A0001501780, A 000 150 17 80
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Role in the Ignition System

The ignition coil in the M111 engine is responsible for converting the low voltage from the vehicle's electrical system into the high voltage necessary to create a spark at the spark plugs. In Mercedes C-Class vehicles of the W202 and W203 generations, a properly functioning coil is crucial for:

• stable engine starting in various operating conditions,
• smooth idling,
• proper combustion of the fuel-air mixture,
• reducing jerking and misfires during acceleration.

Using an original coil dedicated to the M111 unit allows for maintaining engine operating parameters in line with the vehicle manufacturer's specifications.

Construction and Compatibility with the Electrical System

The offered ignition coil is designed to work with the factory Mercedes electrical system, which facilitates installation within the system belonging to the Wires, Harnesses, and Connectors category. The integrated design with a suitable electrical connector enables:

• secure connection to the engine harness without modifications,
• maintenance of the original wire routing,
• reduction of the risk of contact looseness and control signal interference.

This ensures the coil works with the factory engine control unit, providing proper ignition control across the entire RPM range.

Benefits of Using an Original Mercedes Coil

Choosing an ignition component from the Mercedes line is the preferred solution wherever compliance with service documentation and factory parameters is important. The most significant advantages include:

• maintaining the ignition characteristics intended for the M111 engine,
• compatibility with original wires, harnesses, and connectors in the engine bay,
• reducing the risk of control unit errors resulting from incorrect coil parameters,
• easier future diagnostics – the component is compliant with factory electrical diagrams.

This approach is particularly important in vehicles where maintaining stable engine operation and predictable ignition system behavior is a priority.

Product Condition and Service Application

The presented ignition coil is a used part, making it an attractive option for maintenance repairs where a combination of original origin and favorable purchase cost is key. This type of component is suitable for, among other things:

• resolving misfires in a specific cylinder,
• diagnostic coil swapping to confirm a fault,
• restoring vehicle functionality on a limited service budget.

A used OEM coil allows for maintaining consistency with the factory electrical system, which is especially important in older Mercedes generations where component compatibility directly impacts reliability.

Mercedes Wires, Harnesses, and Connectors – Selecting Related Components

If you plan to replace other electrical system components during ignition system repairs, it is worth considering selecting additional items from the Wires, Harnesses, and Connectors category dedicated to this brand. Check available Mercedes wires, harnesses, and connectors to assemble a set of matching components and reduce the risk of recurring faults due to damaged connections.

New or Used Ignition Coil – How to Decide?

When choosing between a new and a used ignition coil, it is worth considering not only the purchase cost but also the quality of workmanship, compatibility with the electrical system, and expected service life. Comparing the advantages of OEM parts in different conditions, described in more detail in the guide: New or Used? Comparing the Cost and Quality of Car Parts, can be helpful. This will make it easier to tailor your service strategy to the specific vehicle and user expectations.