Ford Transit Connect Door Window Frame Front Left N/S Guide Trim DT11-V21979-AC

Ford Transit Connect Door Window Frame Front Left N/S Guide Trim is an original component from the Window seals and trims group, designed for installation in the front left door. It ensures a tight window guide, reduces wind noise, and improves interior protection against water and debris, maintaining the factory character of the Ford bodywork.

Specifications and technical data

• SKU: KT1B-V21979-AA
• Mark: Ford
• Condition: Used
• OEM Part Number: KT1B-V21979-AA
• Substitutable numbers: KT1B-V21979-AA, DT11-V21979-AC
• Location on the vehicle: Front, Left
• Category: Window Seals, Gaskets & Trims

Purpose and function of the seal

The presented window frame seal is dedicated to the front left door area, where it is responsible for properly sealing the window perimeter and the contact point with the door panel. A correctly selected profile minimizes air leaks, reduces noise at higher speeds, and stabilizes the window in the guides during raising and lowering.

As an original Ford component, the seal maintains the proper geometry and flexibility at critical points of the frame, which translates into correct adhesion to the body and uniform pressure around the entire perimeter. As a result, acoustic comfort and protection against moisture are maintained at a factory-like level.

Construction and fitment for Ford Transit Connect

The seal has been designed specifically for the Ford Transit Connect model, taking into account the shape of the door frame, bending radii, and mounting points. Properly formed corners and straight sections facilitate installation and reduce the risk of rippling or pulling away from the metal.

Precise fitment to the driver's side front door frame allows for:

• stable seating in factory slots and clips,
• proper cooperation with the window lifting mechanism,
• maintaining even gaps between the window and the door frame,
• reduction of vibrations and rattling when driving on uneven surfaces.

Benefits of using an original seal

Using an original window frame seal in a Ford Transit Connect allows you to restore factory sealing parameters and comfort of use. This is particularly important in commercial vehicles, where the cabin is often exposed to intensive use and changing weather conditions.

Key advantages include:

• Reduction of cabin noise – proper seal adhesion reduces wind noise and outside sounds.
• Better water protection – proper pressure on the window perimeter reduces the risk of moisture entering the door interior and the cabin.
• Stable window operation – the appropriate profile supports window guidance, which reduces the load on the lifting mechanism.
• Aesthetic finishing of the door frame edge, consistent with other body components.

Installation characteristics and condition of the item

The seal is intended for installation in the Front, Left area, which facilitates clear identification of the vehicle side during service. The construction based on the factory design allows for installation in place of a worn component without the need for modifying the door frame or window.

The product comes from the used parts group, making it a cost-effective solution while maintaining the original Ford specification. It is a practical choice for maintenance repairs, replacement after a collision, or when eliminating leaks in the driver's door area.

Complementary Ford Window seals and trims

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

For users interested in a broader context of selecting used OEM components, performance optimization, and the impact of sub-assemblies on driving characteristics, an article comparing turbochargers in the Mini Cooper S may be helpful – you can find it here: Go-Kart Feeling XXL: used N18 vs. B48 turbocharger – which one to choose for a Mini Cooper S?.