A precision-engineered glass weatherstrip lockstrip designed to secure window glass inside the door channel and provide a tight, durable seal. The WLS 5351/52 C lockstrip reinforces the rubber weatherstrip, preventing glass separation, reducing wind noise and vibration, and protecting the window edge from wear. Built for long-term reliability and straightforward replacement, this lockstrip is ideal for restoration projects or routine maintenance where an OEM-style hold and smooth window operation are required.
Features:
- Corrosion-resistant steel core for long-lasting strength and dimensional stability.
- Secures and aligns window glass within the weatherstrip channel to reduce rattles and wind noise.
- Protects the weatherstrip bead and glass edge from wear and damage during operation.
- Compatible with applications matching the WLS 5351/52 C profile; ideal for restoration and replacement jobs.
- Simple retrofit installation using common hand tools; restores OEM-style fit and finish.
Installation / Application:
- Difficulty: 2/5
- Estimated time: 45–90 minutes per door (typical)
Instructions:
- Lower the window to a position that provides access to the weatherstrip and lockstrip area.
- Remove the interior door panel and any water shield or trim that obstructs access to the weatherstrip channel.
- Carefully peel back or remove the old weatherstrip bead to expose the old lockstrip, using a trim tool and pliers as needed.
- If present, cut and remove the old lockstrip in sections with the utility knife and pliers; take care not to score or damage the glass.
- Clean the channel and surrounding area of debris, old adhesive, and corrosion; wipe with solvent and a clean rag and allow to dry.
- Measure and, if necessary, trim the new WLS 5351/52 C lockstrip to match the original length.
- Insert the new lockstrip into the lip of the weatherstrip bead: seat the metal edge fully into the rubber channel, ensuring it engages evenly along its length.
- Guide the weatherstrip (with installed lockstrip) back into the door window channel; use masking tape or a rubber mallet gently to help seat the bead without damaging the rubber.
- Cycle the window up and down slowly to confirm smooth operation and correct alignment; adjust seating if any binding or gaps are detected.
- Reinstall the water shield, trim, and interior door panel. Clean the area and perform a final functional and seal check for wind noise and leaks.
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 |
Fitment Notes |
| Chevrolet |
C10 Suburban |
1973 - 1986 |
|
| Chevrolet |
C20 Suburban |
1974 - 1986 |
|
| Chevrolet |
C20 Suburban |
1973 |
4 door |
| Chevrolet |
K10 Suburban |
1974 - 1986 |
|
| Chevrolet |
K10 Suburban |
1973 |
4 door |
| Chevrolet |
K20 Suburban |
1973 - 1986 |
|
| Chevrolet |
R10 Suburban |
1987 - 1988 |
|
| Chevrolet |
R1500 Suburban |
1989 - 1991 |
|
| Chevrolet |
R20 Suburban |
1987 - 1988 |
|
| Chevrolet |
R20 |
1987 - 1988 |
|
| Chevrolet |
R2500 Suburban |
1989 - 1991 |
|
| Chevrolet |
R2500 |
1989 |
|
| Chevrolet |
R30 |
1987 - 1988 |
|
| Chevrolet |
R3500 |
1989 - 1991 |
|
| Chevrolet |
V10 Suburban |
1987 - 1988 |
|
| Chevrolet |
V1500 Suburban |
1989 - 1991 |
|
| Chevrolet |
V20 Suburban |
1987 - 1988 |
|
| Chevrolet |
V2500 Suburban |
1989 - 1991 |
|
| Chevrolet |
V30 |
1987 - 1988 |
|
| Chevrolet |
V3500 |
1989 - 1991 |
|
| GMC |
C15 Suburban |
1975 - 1978 |
|
| GMC |
C1500 Suburban |
1979 - 1986 |
|
| GMC |
C2500 Suburban |
1979 - 1986 |
|
| GMC |
K1500 Suburban |
1979 - 1986 |
|
| GMC |
K2500 Suburban |
1979 - 1986 |
|
| GMC |
R1500 Suburban |
1987 - 1991 |
|
| GMC |
R2500 Suburban |
1987 - 1991 |
|
| GMC |
R2500 |
1987 - 1989 |
|
| GMC |
R3500 |
1987 - 1991 |
|
| GMC |
V1500 Suburban |
1987 - 1991 |
|
| GMC |
V2500 Suburban |
1987 - 1991 |
|
| GMC |
V3500 |
1987 - 1991 |
|
