Volkswagen VW Golf Mk5 Window Frame Trim Guide Rail Rear Left N/S 1K6839407B

Visual condition of the part

The product shows signs of use visible in the photos.

Volkswagen VW Golf Mk5 Window Frame Trim Guide Rail Rear Left N/S is a precision component from the Window seals and trims group, responsible for the stable guidance of the window in the rear left door. A properly selected guide rail reduces play, minimizes noise, and supports the correct operation of the window regulator mechanism, which translates into acoustic and operational comfort inside the vehicle.

Specifications and technical data

• SKU: 1K6839407B
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 1K6839407B
• Substitutable numbers: 1K6839407B, 1K6 839 407 B
• Location on the vehicle: Rear, Left
• Category: Window Seals, Gaskets & Trims

Application and function in the bodywork

The described window frame guide rail is designed for installation in the rear left part of the Volkswagen Golf Mk5 body. It is responsible for the proper vertical guidance of the window, keeping it on the intended track, and working in conjunction with the door perimeter seal. As a result, it reduces window vibration while driving, minimizes the risk of misalignment, and helps maintain the seal between the window and the door frame.

This element is particularly important in vehicles used in urban and highway conditions, where frequent window operation and air pressure changes can accelerate the wear of the guides. Replacing a worn rail with a functional component allows for restoring the correct operation of the window regulator mechanism and reducing unwanted noises from the door area.

Benefits of installing the correct guide rail

Using the correct window frame guide rail in the rear left door brings a number of practical benefits:

• more stable window guidance throughout its entire range of motion,
• reduction of cabin noise resulting from window play and vibration,
• reduction of the risk of the window regulator mechanism jamming,
• support for maintaining the seal between the window and the door frame,
• more predictable operation of the window lifting system in the long term.

For the user, this means higher driving comfort, less strain on other window mechanism components, and more even door closing, which is important both in daily use and on longer trips.

Product characteristics and fitment

The rear left window frame guide rail has been designed with the Volkswagen Golf Mk5 door construction in mind, ensuring it maintains the correct geometry and mounting points required for this model. Proper fitment to the door frame and cooperation with the window mechanism allow for installation without the need for body modifications.

The product comes from a group of components dedicated to the Volkswagen brand, which helps maintain structural consistency with other door components. The used nature of the part makes it a cost-effective solution while maintaining the functionality required for daily vehicle operation.

Installation zone: rear – left side

Placement in the rear left part of the vehicle requires attention to the element's compatibility with the specific side of the body. The window frame guide rail is profiled for this specific zone, which ensures proper adhesion to the door structure and correct cooperation with the window and seals. Choosing the correct installation side reduces the risk of improper fitment and accelerated wear of the window or the lifting mechanism.

Complementary Volkswagen window seals and trims

If you are planning a comprehensive repair or upgrade of the door and window frame area in your Volkswagen and need other elements from the same group, such as additional guides, perimeter seals, or finishing trims, check the available parts in the Volkswagen window seals and trims category.