Mercedes R172 Door Lock Latch Bowden Cable Pulley Left N/S A1727600004

Mercedes R172 Door Lock Latch Bowden Cable Pulley Left N/S is a precision component of the door opening mechanism, designed specifically for the door lock system in Mercedes R172 series models. Thanks to its factory-spec geometry and proper routing, the cable ensures reliable transmission of the handle movement to the lock, which translates into predictable and consistent operation of the driver's door.

Specifications and technical data

• SKU: A1727600004
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1727600004
• Substitutable numbers: A1727600004, A 172 760 00 04
• Location on the vehicle: Left
• Part type: Door Lock
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The door lock latch Bowden cable for the left side is responsible for the mechanical synchronization of the handle movement with the lock mechanism in the driver's door. A correctly selected component in this area is crucial for:

• proper opening and closing of the driver's door,
• stable operation of the entire door lock system,
• maintaining the factory feel of the handle and the consistent force required to open the door. In the event of wear or damage to the cable, typical symptoms appear, such as the lock failing to respond to handle movement, the need for increased force, or irregular mechanism operation. Using the correct cable restores consistent operation of the door locking system.

Compatibility and fitment for Mercedes R172

The offered cable has been developed with the door construction of the Mercedes R172 in mind, taking into account the specific routing of the cable within the door structure and its interaction with the factory lock and handle. The placement on the vehicle, specified as the left side, indicates use on the driver's side, which is particularly important when selecting parts for vehicles where the geometry of doors and locks differs between the left and right sides. By maintaining the original length, shape, and mounting points, the cable allows for installation without interfering with the door structure, which reduces the risk of play, skipping, or incorrect cable tension. This is a beneficial solution both for standard replacement and for repairs after a collision or bodywork intervention.

Performance characteristics and advantages of the solution

In Mercedes door lock systems, operational consistency and resistance to service loads are particularly important. Using the correct cable in the front left door allows you to:

• maintain a predictable lock response to the movement of the internal and external handle,
• minimize the risk of jamming and incomplete door opening,
• reduce the need for mechanism adjustment after installation. The component from this group is particularly important in vehicles used daily, where the driver's door is the most frequently operated. A properly selected cable supports stable operation of the entire locking system, which translates into vehicle operating comfort and safety.

Condition, origin, and service application

The product comes from the Locks and Latches parts group intended for Mercedes vehicles and is suitable for service applications, post-accident repairs, and maintenance replacements. The used nature of the component makes it a cost-effective solution while maintaining proper structural fitment to the factory door mechanism. The cable will prove useful both in professional service centers specializing in the Mercedes brand and in independent workshops that carry out door mechanism repairs, lock replacements, or door reconstruction after body and paint work.

Expanding the Mercedes lock system

If you are planning a comprehensive repair or upgrade of the door lock zone in your Mercedes and need other components from the same group, such as lock mechanisms, latches, or handle cables, check the available parts in the Mercedes Locks and Latches category. For users interested in a broader perspective on the operation and maintenance costs of premium cars, including the impact of aftermarket parts prices on service profitability, an article comparing popular BMW diesel engines may be helpful – you can find it here: BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels.