The Precision Rear Window Weatherstrip Seal, Without Trim Groove WBL 1158, is a direct-replacement rear window seal engineered to stop water intrusion, reduce wind noise, and protect interior trim. Molded from durable EPDM rubber with ozone and UV resistance, this seal is designed for vehicles that use a groove-less, flush-fit rear glass installation. Ideal for restoration projects and routine maintenance, it provides long-lasting compression and a snug fit—verify part number WBL 1158 against your vehicle's specifications for exact fitment.
Features:
- Designed to replace factory rear window seals on many cars, trucks, and SUVs—verify WBL 1158 for exact fitment.
- Made from high-grade EPDM rubber for resistance to UV, ozone, and weathering.
- No trim groove design for applications with flush or bonded rear glass installations.
- Helps prevent leaks, reduce wind noise, and protect interior trim from water damage.
- OEM-style profile for reliable sealing and long-term compression set resistance.
- Suitable for restoration, collision repair, or preventative maintenance applications.
Installation / Application:
- Difficulty: 2/5
- Estimated time: 30-60 minutes
Instructions:
- Carefully remove the old weatherstrip: pry out retaining trim (if present) and pull the old seal away from the glass channel. Use a razor blade or scraper to remove any stuck pieces.
- Clean the mounting channel and glass flange thoroughly with isopropyl alcohol or an appropriate cleaner to remove old adhesive, dirt, and sealant. Allow to dry.
- Dry-fit the new WBL 1158 seal around the rear window to confirm orientation and fit. Trim excess length only if necessary, following the original seal as a template.
- If the application requires adhesive, apply a thin, even bead of weatherstrip adhesive to the channel per the adhesive manufacturer's instructions. Many applications allow a push-in installation without adhesive—check fitment notes.
- Starting at one corner, press the seal into the channel, working around the perimeter. Use a plastic trim tool or your fingers to seat the seal fully; avoid sharp tools that can nick the rubber.
- Use masking tape to hold the seal in position if adhesive was used. Reinstall any trim pieces removed earlier.
- Allow adhesive to cure per product instructions before subjecting the seal to water exposure or closing the trunk/hatch repeatedly. Inspect for gaps and reseat as needed.
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 |
| Ford |
F-100 |
1973 - 1983 |
| Ford |
F-150 |
1975 - 1996 |
| Ford |
F-250 |
1973 - 1998 |
| Ford |
F-350 |
1973 - 1998 |
