Ford Transit 12 Tourneo Door Weatherstrip Upper Front Left N/S BK21V51401BH

Ford Transit 12 Tourneo Door Weatherstrip Upper Front Left N/S is an original body component from the Door seals group, designed for installation in the front left door. It ensures a tight seal between the door leaf and the body, reducing noise, water ingress, and air drafts into the cabin.

Specifications and technical data

• SKU: BK21-V51401-BH
• Mark: Ford
• Condition: Used
• OEM Part Number: BK21-V51401-BH
• Substitutable numbers: BK21-V51401-BJ, BK21V51401BJ, BK21-V51401-BH, BK21V51401BH, 2425703
• Location on the vehicle: Front, Left
• Part type: Door Seal
• Category: Door Seals

Purpose and function of the seal

The presented seal is tailored to the front left door area, where it is responsible for a stable seal of the upper edge. When properly installed, it reduces the risk of window fogging, improves acoustic comfort inside the vehicle, and supports protection against corrosion around the door frame.

Thanks to its factory profile and geometry, the seal works in harmony with the door and body structure, which translates into consistent closing and even pressure along the entire contact length.

Benefits of using an original Ford seal

Using a component from the Ford brand ensures compliance with factory assembly tolerances. In practice, this means:

• secure door guidance in the upper part of the frame,
• reduction of wind noise at higher speeds,
• better protection of the interior against moisture and dirt,
• consistent appearance of the seal line relative to other body components.

For commercial vehicles such as the Transit or Tourneo, proper sealing also translates into more stable operating conditions for air conditioning and heating, which is important for daily operation.

Vehicle placement and fitment

The seal is designed for installation in the front – left side area, in the upper part of the door. This specific placement makes it easier to correctly select the part during service and minimizes the risk of ordering errors.

The seal profile has been designed for a specific body type, allowing for installation without interfering with the door structure, and without the need for cutting or modifying the shape.

Product characteristics and service application

The front left upper door seal is suitable both for typical replacement of a worn-out component and for post-accident repairs where restoring cabin tightness is necessary. It allows for:

• restoring proper door pressure against the body,
• reducing unwanted noise coming from the outside,
• completing bodywork and paint repairs around the pillar and door frame.

By maintaining the factory shape of the seal, it is possible to maintain a consistent contact line around the entire door perimeter, which is important for both functional and aesthetic reasons.

Selection of other Ford door seals

If you are planning a comprehensive repair or upgrade of the door area in your Ford and need other components from the same group, such as lower, side, or contact seals, check the available parts in the Ford door seals category.

To better plan service work on the body and air conditioning system, it is also worth checking out our guide on diagnosing and replacing the A/C compressor: A/C compressor – failure symptoms, causes, and safe replacement.