The Precision Rear Window Weatherstrip Seal, Without Trim Groove WBL 6425 is a direct-fit rear window seal engineered to keep water, wind, and road debris out of the cabin while restoring proper window alignment and appearance. Designed for applications that require a groove-less sealing profile, this weatherstrip provides a tight, consistent seal around the glass edge to reduce leaks and wind noise. Constructed from a durable automotive-grade rubber compound, it resists compression set, UV degradation, and temperature extremes for long-lasting performance. Ideal for restoration or replacement projects, the WBL 6425 simplifies installation and returns the vehicle to a factory-like seal and fit.
Features:
- Designed for rear window openings that require a seal without a trim groove (confirm fitment with part number WBL 6425).
- Made from durable automotive-grade rubber for resistance to UV, ozone, and temperature extremes.
- Groove-less profile seals directly against the glass edge to prevent water intrusion and reduce wind noise.
- OEM-style shape provides correct alignment and a factory appearance on restoration and replacement jobs.
- Easy to install — push-in or adhesive-retained depending on vehicle application.
- Helps protect interior trim and body panels from water damage and corrosion.
Installation / Application:
- Difficulty: 2/5
- Estimated time: 30-60 minutes
Instructions:
- Park vehicle on a level surface and work in a warm, dust-free area if possible; mild heat improves seal flexibility and adhesive performance.
- Carefully remove the old weatherstrip: detach any retaining clips, pull the seal from the channel, and cut through any bonded sections with a utility knife.
- Clean the channel and surrounding flange thoroughly with isopropyl alcohol or an appropriate solvent to remove old adhesive, dirt, and residue. Allow to dry.
- Test-fit the new WBL 6425 seal around the glass opening to confirm orientation and length. Trim excess if necessary, leaving a small overlap if specified by vehicle instructions.
- If the application uses adhesive, apply a continuous thin bead of weatherstrip adhesive to the channel per the adhesive manufacturer's instructions. If the seal is push-in style, omit adhesive unless supplemental bonding is desired.
- Starting at the top center of the opening, press the new seal into the channel and work toward each corner. Use a trim tool or block of wood and rubber mallet to seat the seal evenly without distortion.
- Ensure corners and ends are fully seated and any laps are properly overlapped or butted per vehicle practice. Clean any excess adhesive immediately with solvent.
- Allow adhesive to cure for the recommended time before exposing the vehicle to water or driving at highway speeds. Reinstall any trim or retaining hardware as required.
About Precision Replacement Parts
Since 1986 Precision Replacement Parts has been a trusted name in the Automotive Glass Industry.
Our knowledge and experience in manufacturing millions of extruded and molded EPDM Rubber, PVC and HDPE based plastics, and various stamped and extruded metal products for the classic and late model industries has allowed Precision to expand our services into multiple product markets.
Along with our own USA based production facility, Precision also partners with 25 different manufactures worldwide with a reputation as a global leader supplying OEM and replacement products to a number of different industries. Our partnerships along with our own in-house manufacturing and fabrication capability gives Precision a unique position in helping to meet the expanding needs of customers everywhere, providing them with a sustained competitive advantage.
Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
| Make |
Model |
Years |
| Chevrolet |
S10 |
1982 - 1993 |
| GMC |
S15 |
1982 - 1990 |
| GMC |
Sonoma |
1991 - 1993 |
