This rear window weatherstrip seal with a dedicated trim groove for a lockstrip (WCR 1135 profile) provides a secure, weather-tight seal around the rear glass, preventing water intrusion, wind noise, and vibration. Molded from durable EPDM rubber, the seal resists UV, ozone, and temperature extremes for long-lasting performance and is ideal for restoration or replacement of worn or damaged rear window seals. The lockstrip groove ensures correct retention of the trim for a factory-fit appearance while simplifying installation and improving overall cabin comfort.
Features:
- Designed to fit rear window applications using the WCR 1135 lockstrip profile.
- Constructed from durable EPDM rubber for superior weather, UV, and ozone resistance.
- Integrated trim groove accepts a lockstrip to securely retain exterior trim and glass.
- Creates a reliable, watertight seal to prevent leaks, wind noise, and rattles.
- Easy to test-fit and seat; suitable for restoration projects and replacements.
- Helps restore factory fit and finish for a clean, professional appearance.
Installation / Application:
- Difficulty: 3/5
- Estimated time: 1–2 hours
Instructions:
- Carefully remove the old weatherstrip and any attached lockstrip; use a trim tool or small screwdriver to avoid scratching the channel.
- Clean the window channel and surrounding area thoroughly with rubbing alcohol or cleaner; remove all adhesive residue and debris.
- Dry-fit the new weatherstrip into the channel to confirm orientation and proper alignment of the trim groove with the lockstrip path.
- If using a separate lockstrip, insert the lockstrip into the weatherstrip groove partially to align; for integrated systems, proceed to seat the seal.
- Lightly wet the channel or weatherstrip with soapy water or mild lubricant to aid sliding; apply weatherstrip adhesive sparingly where manufacturer guidelines recommend.
- Starting at one end, press the weatherstrip into the channel, working along the perimeter. Use a rubber mallet or block of wood to gently seat the seal without deforming it.
- Install or fully engage the lockstrip into the trim groove, ensuring it locks the weatherstrip securely into the channel.
- Trim any excess material with a utility knife, inspect the seal for gaps, and clean off any excess adhesive.
- Allow adhesive to cure per product instructions (if used), then test for leaks by spraying water around the window and checking for intrusion.
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 |
