Mercedes W166 Door Lock Latch Trim Cover Rear Left N/S A1667330708

The Mercedes W166 Rear Left Door Lock Cover is a precision component from the Doors and Door Panels group, designed to protect the lock mechanism in the rear left door. A properly fitted cover stabilizes the lock's operation, limits dirt ingress, and contributes to the door's smooth closing, enhancing the comfort of daily vehicle use.

Specifications and technical data

• SKU: A1667330708
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667330708
• Substitutable numbers: A1667330708, A 166 733 07 08
• Location on the vehicle: Rear, Left
• Category: Doors & Door Skins

Purpose and Technical Function

The lock cover is intended for installation in the rear left area of the body, within the passenger door. Its purpose is to protect the lock mechanism from dust, moisture, and minor mechanical damage, as well as to organize the routing of components in this part of the door. This ensures the lock operates under more predictable conditions, promoting the maintenance of proper geometry and consistent closing.

The component belongs to the structural group responsible for:

• protecting the door lock mechanism from external factors,
• stabilizing the position of sub-assemblies in the rear left part of the door,
• maintaining the structural integrity of the door panel and interior.

Compatibility and Fitment

The cover has been developed specifically for the W166 body series, ensuring a precise fit to the door geometry and mounting points of this model. The design, intended for a specific location on the vehicle, facilitates installation and minimizes the risk of improper alignment with other door components.

Thanks to the use of original mounting geometry, the component works seamlessly with the factory lock mechanism and other door assembly components, without requiring any modifications or on-site adjustments.

Performance Characteristics and Benefits

The rear left lock cover in the W166 plays a significant operational role, influencing the durability and smooth operation of the lock. Key benefits of using this component include:

• Enhanced Lock Mechanism Protection – limiting the impact of moisture and dirt on moving parts.
• Stable Door Component Routing – improving the organization of the mounting area in the rear of the door.
• Structural Consistency – maintaining the manufacturer's intended assembly within the door and door panels.
• Usable in accident repairs or servicing when a damaged cover needs replacement.

The product is from the group of parts originally used in Mercedes vehicles, which helps maintain the original structural parameters of the body and compliance with service documentation.

Component Condition and Service Application

The lock cover is a used part, making it an attractive solution for economical repairs, post-warranty service, and vehicle restorations where maintaining the original structure while optimizing costs is a priority. This type of component is suitable for both localized door repairs and larger bodywork and assembly tasks in the rear left section of the vehicle.

Expanding Door Repair in Mercedes

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other parts from the same group, such as panels, reinforcements, or additional covers, check the available parts in the Mercedes Doors and Door Panels category.

For drivers interested in a broader approach to vehicle operation and servicing, including cost optimization while maintaining the efficiency of key systems, our guide on cooling system operation in high temperatures may be helpful – find more information in the article Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings.