Precision Hood To Cowl Seal CS 1700 78 is a direct-fit weatherseal designed to restore the gap between the hood and cowl. It creates a reliable barrier against water, dust and road debris, reduces wind noise and prevents moisture from entering the engine bay and passenger compartment. Made from durable, weather-resistant rubber compound, this seal resists compression set, UV and ozone exposure for long-lasting performance. Ideal for restoration and maintenance projects, it delivers an OEM-style fit for consistent sealing and simple installation.
Features:
- Direct-fit hood-to-cowl seal (CS 1700 78) for restoration and maintenance applications.
- Constructed from durable, weather-resistant rubber to resist UV, ozone and compression set.
- Seals hood-to-cowl gap to prevent water intrusion, dust entry and road debris damage.
- Helps reduce wind noise and improves climate control efficiency by sealing the firewall area.
- OEM-style profile for consistent fit and appearance; restores factory sealing performance.
- Simple replacement reduces corrosion and prolongs interior and engine-bay component life.
Installation / Application:
- Difficulty: 2/5
- Estimated time: 30–60 minutes
Instructions:
- Open the hood and support it securely.
- Remove the old seal: pry out retaining clips or adhesive and peel away the old weatherstrip.
- Clean the mounting surface thoroughly with isopropyl alcohol or degreaser; remove old adhesive and debris and allow to dry.
- Test-fit the new seal along the cowl and hood edge to verify orientation and fit before final installation.
- If adhesive is recommended, apply a thin, even bead of weatherstrip cement to the mounting surface per the adhesive manufacturer's directions.
- Starting at one end, press the new seal into place along the cowl/hood mating surface, ensuring the seal lip seats properly and any holes align with existing clips.
- If clips or fasteners are used, reinstall them to secure the seal. Trim any excess material with a utility knife for a clean fit.
- Close the hood gently and inspect the seam for even compression and proper alignment. Reopen and adjust if necessary.
- Allow adhesive to cure as directed (if used) before driving.
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 |
Century |
1978 - 1988 |
| Buick |
Regal |
1978 - 1988 |
| Chevrolet |
Malibu |
1978 - 1983 |
| Chevrolet |
Monte Carlo |
1978 - 1988 |
| Oldsmobile |
Cutlass Calais |
1978 - 1988 |
| Oldsmobile |
Cutlass Cruiser |
1980 - 1981 |
| Oldsmobile |
Cutlass Salon |
1978 - 1987 |
| Oldsmobile |
Cutlass Supreme |
1978 - 1987 |
| Oldsmobile |
Cutlass |
1978 - 1981 |
| Pontiac |
Grand Am |
1978 - 1988 |
| Pontiac |
Grand LeMans |
1978 - 1981 |
| Pontiac |
Grand Prix |
1978 - 1988 |
| Pontiac |
LeMans |
1978 - 1988 |
