A precision-fit right-hand lower door weatherstrip designed to restore the original seal on vehicles that require the DWR 1411-78 specification. This durable door seal prevents water intrusion, reduces wind noise and road vibration, and protects interior trim and carpets from moisture and dirt. Made from long-lasting rubber with a reinforced channel for secure mounting, the seal returns proper door alignment and weatherproofing to aging doors for dependable, long-term performance. Ideal for restoration projects or replacing worn, cracked, or flattened seals.
Features:
- Fits right-hand lower door openings for 1978 vehicles requiring DWR 1411-78 specification — verify exact fitment for your make and model before purchase.
- Constructed from durable EPDM-type rubber with a reinforced mounting channel for a secure, long-lasting seal.
- Prevents water leaks, reduces wind noise, and blocks dust and road debris from entering the cabin.
- Easy replacement part that restores proper door closure and helps maintain interior condition during restorations.
- Resistant to UV, ozone, and temperature extremes for extended service life.
- Sold as the right-hand (passenger-side) lower door weatherstrip in OEM-style profile for accurate fit and finish.
Installation / Application:
- Difficulty: 2/5
- Estimated time: 30-60 minutes
Instructions:
- Park vehicle on level ground and open the door fully; support the door if needed.
- Carefully remove the old lower door weatherstrip: use a trim tool or flat screwdriver to pry out the seal and any retaining channel, taking care not to damage the door flange or paint.
- Thoroughly clean the mounting channel and surrounding surfaces with isopropyl alcohol or a mild cleaner; remove old adhesive, dirt, and corrosion to ensure good adhesion and fit.
- Dry-fit the new weatherstrip along the lower door edge to confirm orientation and length; trim excess if necessary so the ends align with door corners.
- If the original seal used adhesive, apply a thin bead of weatherstrip adhesive to the channel per the adhesive manufacturer’s directions; otherwise, align the reinforced channel and press the seal into place.
- Work progressively along the door, pressing the seal firmly into the channel and ensuring the retainer seats evenly without gaps or twists.
- Reinstall any retaining clips or molding removed earlier; wipe away excess adhesive immediately and allow adhesive to cure as recommended.
- Close and open the door several times to confirm smooth operation and a complete seal; make minor adjustments if necessary and inspect for leaks after a brief road or water test.
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 |
| Buick |
Regal |
1982 - 1987 |
| Chevrolet |
El Camino |
1978 - 1987 |
| Chevrolet |
Monte Carlo |
1978 - 1988 |
| Oldsmobile |
Cutlass Supreme |
1982 - 1988 |
| Pontiac |
Grand Prix |
1978 - 1987 |
