Ignition Coil Mercedes W176 M270 Petrol Ignition Cable Connector A2701590042

Mercedes W176 M270 Ignition Coil Petrol is an original ignition system component designed for M270 series petrol engines in W176 A-Class models. The coil belongs to the Cables, Harnesses, and Connectors category, making it a perfect fit for the vehicle's factory electrical system architecture. A used OEM component allows for a technical, reliable replacement of a damaged part without altering the engine's construction.

Specifications and technical data

• SKU: A2701590042
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2701590042
• Substitutable numbers: A2701590042, A 270 159 00 42
• Fuel type: Petrol
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Role in the Ignition System

The ignition coil in the M270 petrol engine is responsible for converting the vehicle's electrical system voltage into the high voltage necessary to generate a spark at the spark plug. For units installed in the Mercedes A-Class W176, this is crucial for stable idling, smooth acceleration, and minimizing misfires.

Using an original coil within the Cables, Harnesses, and Connectors category ensures compatibility with the factory engine control unit, ignition map characteristics, and exhaust emission parameters. This solution is particularly recommended for diagnosing issues such as rough engine running, power loss, or ignition errors recorded in the ECU's memory.

Compatibility and Integration with the Electrical System

The ignition coil dedicated to the M270 unit has been designed for the specific geometry of the cylinder head, spark plug socket, and electrical connector. This ensures:

• correct seating on the spark plug,
• seal integrity around the spark plug socket,
• compatibility with the factory engine harness without modifications.

Proper integration with the petrol system translates to consistent spark parameters, which is important for both engine durability and driving comfort. Using the correct component reduces the risk of damage to cables, connectors, and interference with onboard electronics.

Application in Petrol Engines

The presented coil is intended for petrol-powered units where the ignition system operates with individual coils per cylinder. This type of solution allows the engine control unit to precisely manage ignition timing and energy, which is significant for modern combustion strategies and meeting emission standards.

Replacing a coil with a functional OEM part is recommended in situations including:

• jerking during acceleration,
• intermittent misfires on one cylinder,
• increased fuel consumption related to incomplete mixture combustion.

Characteristics of a Used Component

The ignition coil offered as a used OEM part provides a cost-effective solution while maintaining factory specifications. This type of component is particularly attractive for routine maintenance repairs where compliance with the original system and reduced service costs are priorities. A used coil with preserved connector and housing geometry allows for quick installation without additional adaptations.

Mercedes Cables, Harnesses, and Connectors – Selecting Related Components

If you need other components from the Mercedes Cables, Harnesses, and Connectors category for your car, check out our dedicated offer, where you will find matching electrical system components, including engine harnesses, connectors, and ignition leads: Mercedes Cables, Harnesses, and Connectors.

Support for Interior Upgrades

If you are planning to refresh your car's interior alongside ignition system repairs, it is worth checking out our guide on using used equipment. Practical tips for selecting seats and steering wheels can be found in the article: Car Interior Tuning with Global Parts – Used Seats and Steering Wheels.