Mercedes ML W163 Door Gasket Rear Left N/S C Pillar Seal Rubber A1637301378

The Rear Left Door Seal C-pillar Mercedes ML W163 is an original body part designed for installation on the rear left door in the C-pillar area. Precisely molded rubber ensures a tight seal against the car body, resulting in improved acoustic insulation, protection against water, and stable door operation. This is a practical solution for users who want to restore the factory seal in their Mercedes ML W163 in a controlled manner.

Specifications and technical data

• SKU: A1637301378
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1637301378
• Substitutable numbers: A1637301378, A 163 730 13 78
• Location on the vehicle: Rear, Left
• Category: Door Seals

Intended Use and Body Fitment

The presented seal is designed for installation in the rear left part of the vehicle, in the C-pillar area. It is responsible for sealing the contact between the door and the car body, thereby limiting the ingress of water, dust, and noise into the passenger cabin. The design of the rubber profile is adapted to the body geometry of the ML W163, which facilitates installation and allows for maintaining the factory door edge alignment.

Function of the Door Seal in Mercedes ML W163

The rear left door seal on the C-pillar performs several important operational functions:

• creates a barrier against rainwater and external contaminants,
• reduces wind noise at higher speeds,
• supports stable door closing and reduces unwanted vibrations,
• helps maintain thermal comfort inside the vehicle.

By maintaining the correct rubber profile and appropriate flexibility, this component allows for the restoration of proper sealing in the door area after replacing a worn or damaged seal.

Element Characteristics and Installation

The seal is made of flexible rubber material designed for operation in varying weather conditions. The profile is molded to allow for its placement in the factory mounting points on the body edge in the C-pillar area. Installation involves correctly positioning the seal in its guide and pressing it along its entire length, ensuring no local stresses or kinks occur.

The item is a used part, which in practice means it is a component with parameters consistent with the factory equipment of the given model. For the user, this means the possibility of maintaining the structural integrity of the body and a perfect fit with existing doors without the need for body modifications.

Benefits of Using an Original Door Seal

Using an original seal in the rear left part of the body allows for:

• restoring the seal of the door area after a collision, body repair, or natural wear and tear,
• reducing noise coming from the rear wheel arch and C-pillar area,
• limiting the risk of dampness in the upholstery and interior components,
• maintaining a consistent appearance and alignment of the door edges with the car body.

For owners of Mercedes ML W163, this is a practical way to maintain driving comfort and proper door operation without the need for aftermarket alternatives with uncertain fit. A correctly chosen seal in the Door Seals category affects the daily operation of the vehicle, especially in conditions of rain, frost, and significant temperature differences.

Expanding the Scope of Service Work

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 additional edge seals, flange seals, or rubber elements around the door openings, check the available parts in the Mercedes Door Seals category.

For those interested in a broader perspective on selecting used parts, modernization, and the impact of body and equipment elements on driving comfort, an article describing the evolution of a popular compact sports model may be helpful – you can find it here: Hot Hatch Legend: Evolution of the VW Golf GTI from Mk1 to Mk8 – Construction Changes and VW Car Parts.