Mercedes W211 OM642 Battery Cable Starter Wiring Harness Loom A2115401430

The Battery to Starter Cable Harness for Mercedes W211 OM642 is an original electrical system component designed for precise connection between the battery and the starter in models with the OM642 engine. Thanks to its factory geometry and appropriately selected cable cross-sections, it ensures stable starter power supply and safe operation of the starting system. This is a solution for users seeking a proven, structurally matched harness instead of universal replacements.

Specifications and technical data

• SKU: rhd-A2115401430
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2115401430
• Substitutable numbers: A2115401430, A 211 540 14 30
• Category: Wiring Harnesses, Cables & Connectors

Purpose and Function in the Starting System

This battery to starter cable harness is specifically designed for the electrical architecture of Mercedes E-Class W211 models with the OM642 unit. It is responsible for:

• transferring high starting current from the battery to the starter,
• maintaining appropriate resistance and minimizing voltage drops,
• secure, mechanically stable cable routing in the engine compartment.

By being tailored to the specific vehicle platform, the harness helps maintain correct cable routing, which reduces the risk of chafing, overheating, and interference with the starting system.

Construction and Advantages of the Original Harness

The original battery to starter cable harness in the Mercedes W211 OM642 utilizes the manufacturer's original design solutions. This means:

• dedicated cable length and shape matched to the routing path in the W211 body,
• connectors and terminals prepared for direct installation at original connection points,
• insulation adapted for operation at elevated temperatures and in the vicinity of engine components.

This solution facilitates installation and maintains the factory standard for system routing, which is particularly important for servicing premium cars. An appropriately selected harness reduces the risk of starting problems, voltage drops, and localized cable overheating.

Professional Use in Service and Repairs

The battery to starter cable harness for the Mercedes W211 OM642 is particularly useful for:

• resolving issues with difficult starting caused by degradation of the old system,
• repairs after mechanical or thermal damage to the cables,
• comprehensive renovation of the electrical system in the engine compartment.

Choosing an original harness from the Cables, Harnesses, and Connectors group helps maintain consistency with other system components, which is important for both reliability and subsequent diagnostics. The product comes from the Mercedes brand offering, facilitating identification and matching in professional workshops.

Condition, Fitment, and Practical Aspects

The item is offered as a used part, providing a cost-effective solution while maintaining the original manufacturer's specifications. The harness is intended for installation in vehicles with the OM642 engine in the W211 body, where maintaining the correct cable cross-section and proper routing of the system in the engine compartment is crucial. Factory connectors and terminals facilitate plug-and-play installation, without the need for system modifications.

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other components from the same group, such as additional harnesses, power cables, or service connectors, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.

Additional Technical Support

When working on the powertrain and starting system, it is advisable to pay attention to the overall condition of the engine unit and its accessories. If you are considering a broader scope of service work, including engine unit replacement, a practical step-by-step guide may be helpful – check the article How to Buy a Used Car Engine and Avoid Pitfalls – A Step-by-Step Guide to better plan the scope of repairs and avoid unnecessary costs.