Window Seal Filler Strip DBF500040 for Defender

Window Seal Filler Strip DBF500040 is used to lock and expand the window seal once the glass is installed, ensuring a tight, secure, and weather-resistant fit. This filler strip is a critical component of the two-part window seal system used on Land Rover Defender models.

During installation, the filler strip is pressed into the main rubber seal, forcing it outward to grip both the glass and the body aperture. Replacing hardened, missing, or damaged filler strips helps prevent leaks, wind noise, and glass movement.

This strip is commonly used with alpine, side, and other fixed window seals that require a locking insert.

Vehicle Fitment

• Defender

Supersession Part Numbers

Supersessions 302178, DBF500010.

FAQ

What does this filler strip do?
It expands and locks the window seal into place after the glass is installed.

Is this a complete window seal?
No. This listing is for the filler strip only. The main rubber window seal is sold separately.

When should the filler strip be replaced?
Replacement is recommended whenever the window seal is renewed or if the original strip is brittle, missing, or damaged.

Part Number: DBF500040

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