The Precision Rear Window Weatherstrip Seal, Without Trim Groove WBL 1135, provides a watertight, airtight seal around the rear glass to prevent leaks, wind noise, and interior damage. Molded from durable, UV- and ozone-resistant EPDM rubber, this replacement seal restores factory fit and finish where a trim-groove style is not used. It improves cabin comfort, protects body panels from water intrusion and corrosion, and is engineered for long-lasting flexibility and reliable performance during restoration or routine maintenance.
Features:
- Designed as a direct rear window weatherstrip replacement where no trim groove is present.
- Made from UV- and ozone-resistant EPDM rubber for long-term durability.
- Seals out water, wind, and road noise to protect interior and prevent corrosion.
- OEM-style profile restores factory fit and finish for restorations.
- Flexible construction for easy installation and reliable compression set.
- Suitable for restoring seals on classic or late-model vehicles requiring a groove-less seal.
Installation / Application:
- Difficulty: 2/5
- Estimated time: 30-60 minutes
Instructions:
- Park vehicle on a level surface and remove the rear glass or trim as required by the vehicle service manual.
- Carefully remove the old weatherstrip from the window channel, using a trim tool to avoid scratching paint or glass.
- Clean the mounting channel thoroughly with isopropyl alcohol or adhesive cleaner to remove old adhesive, dirt, and debris; allow to dry.
- Dry-fit the new WBL 1135 seal around the glass or into the channel to verify orientation and fit.
- If specified by the vehicle or the product instructions, apply a thin bead of weatherstrip adhesive to the channel or mating surface.
- Starting at the center top of the window, press the seal into the channel, working outward toward each corner. Use a rubber mallet or block of wood to seat the seal evenly without over-compressing.
- Trim any excess material with a utility knife for a neat finish, taking care not to nick the glass or paint.
- Secure the seal with masking tape where necessary and allow adhesive to cure per adhesive manufacturer recommendations (if used).
- Reinstall the rear glass or trim following the vehicle service procedures, checking that the seal remains properly seated.
- Perform a water test (spray or light hose) to confirm there are no leaks and make final adjustments if 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 |
| Chevrolet |
C10 Pickup |
1973 - 1974 |
| Chevrolet |
C10 |
1975 - 1986 |
| Chevrolet |
C20 Pickup |
1973 - 1974 |
| Chevrolet |
C20 |
1975 - 1986 |
| Chevrolet |
C30 Pickup |
1973 - 1974 |
| Chevrolet |
C30 |
1975 - 1986 |
| Chevrolet |
C50 |
1973 - 1990 |
| Chevrolet |
K10 Pickup |
1973 - 1974 |
| Chevrolet |
K10 |
1975 - 1986 |
| Chevrolet |
K20 Pickup |
1973 - 1974 |
| Chevrolet |
K20 |
1975 - 1986 |
| Chevrolet |
K30 Pickup |
1973 - 1974 |
| Chevrolet |
K30 |
1977 - 1986 |
| Chevrolet |
R10 |
1987 |
| Chevrolet |
R20 |
1987 - 1988 |
| Chevrolet |
R2500 |
1989 |
| Chevrolet |
R30 |
1987 - 1988 |
| Chevrolet |
R3500 |
1989 - 1991 |
| Chevrolet |
V10 |
1987 |
| Chevrolet |
V20 |
1987 |
| Chevrolet |
V30 |
1987 - 1988 |
| Chevrolet |
V3500 |
1989 - 1991 |
| GMC |
C15/C1500 Pickup |
1973 - 1974 |
| GMC |
C1500 |
1979 - 1986 |
| GMC |
C15 |
1975 - 1978 |
| GMC |
C25/C2500 Pickup |
1973 - 1974 |
| GMC |
C2500 |
1979 - 1986 |
| GMC |
C25 |
1975 - 1978 |
| GMC |
C35/C3500 Pickup |
1973 - 1974 |
| GMC |
C3500 |
1979 - 1986 |
| GMC |
C35 |
1975 - 1978 |
| GMC |
C5000 |
1979 - 1990 |
| GMC |
K15/K1500 Pickup |
1973 - 1974 |
| GMC |
K1500 |
1979 - 1986 |
| GMC |
K15 |
1975 - 1978 |
| GMC |
K25/K2500 Pickup |
1973 - 1974 |
| GMC |
K2500 |
1979 - 1986 |
| GMC |
K25 |
1975 - 1978 |
| GMC |
K35/K3500 Pickup |
1973 - 1974 |
| GMC |
K3500 |
1979 - 1986 |
| GMC |
K35 |
1977 - 1978 |
| GMC |
R1500 |
1987 |
| GMC |
R2500 |
1987 - 1989 |
| GMC |
R3500 |
1987 - 1991 |
| GMC |
V1500 |
1987 |
| GMC |
V2500 |
1987 |
| GMC |
V3500 |
1987 - 1991 |
