Pontiac Grand Prix Weatherstrip & Seals - OEM-Fit Door, Trunk & Window Seals

Stop leaks, drafts, and road noise in your Pontiac Grand Prix with precision-fit replacement weatherstrip and seals designed specifically for your vehicle. Each seal is engineered to match the original profile and mounting groove of your Pontiac Grand Prix—restoring a tight, quiet seal around your doors, trunk, hatch, and windows.

Our Pontiac Grand Prix weatherstrip is manufactured from durable, weather-resistant rubber compounds such as EPDM, engineered for an exact OEM-quality fit and finish. These materials resist sunlight, ozone, and chemical exposure while maintaining flexibility across temperature extremes, so your new seals stay soft and pliable instead of cracking or hardening the way factory-original rubber does over time.

Use the Vehicle Selector above to find the correct weatherstrip for your Pontiac Grand Prix, or browse below to explore available options. Whether you’re chasing down a stubborn water leak or completing a full restoration, Factory Interiors makes it easy to achieve a tight, factory-quality seal with precision-fit weatherstrip for your Pontiac Grand Prix.

1968-1970 Pontiac Grand Prix Brake Master Cylinder Cover Weatherstrip Seal. Fits 71-83 GM's.

This brake master cylinder cover seal is designed for 1971-1983 GM vehicles, ensuring a precise fit and reliable performance. Crafted from durable, high-quality rubber, this seal is engineered to prevent leaks and maintain a secure seal for your brake master cylinder, protecting it from dust, moisture, and debris. Its oval shape with dual recessed grooves is tailored to fit snugly into place, making installation straightforward and hassle-free. This part is essential for maintaining the integrity of your braking system, ensuring consistent and safe operation. Backed by a 90-day warranty, you can trust in its quality and performance.

Features and Benefits
  • Prevents leaks and protects the brake master cylinder.
  • Made from durable, high-quality rubber for long-lasting use.
  • Easy to install with a precise fit for 1971-1983 GM vehicles.

$48.99
• SALE $39.95
Select Color/Material Options  
1968-1970 Pontiac Grand Prix Brake Master Cylinder Cover Weatherstrip Seal. Fits 71-83 GM's.
1967-1983 Pontiac Grand Prix Brake Master Cylinder Cover Weatherstrip Seal. Replaces OEM #5470861.

For the 1967-1981 Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac cars, this Brake Master Cylinder Cover Seal by Metro Moulded Parts is a must-have component, measuring 5" x 2-1/2". It replaces OEM #5470861, ensuring a perfect fit and reliable performance. Crafted with over 50 tons of pressure, this seal boasts precise definition and detailing, enhancing both form and function. Designed to fit a wide range of classic models, including the Buick Electra, Cadillac DeVille, Chevrolet Camaro, Oldsmobile Cutlass, and Pontiac Firebird, this seal is essential for maintaining your vehicle's braking system integrity. Its robust construction ensures durability and longevity, making it a reliable choice for vintage car enthusiasts. With a 90-day warranty, you can purchase with confidence, knowing that any issues will be promptly addressed. Enhance your classic car's performance and safety with this expertly crafted seal.

Features and Benefits
  • Ensures a perfect fit for classic models.
  • Crafted with high pressure for precision.
  • Enhances braking system integrity.

$48.99
• SALE $39.95
Select Color/Material Options  
1967-1983 Pontiac Grand Prix Brake Master Cylinder Cover Weatherstrip Seal. Replaces OEM #5470861.
1978-1988 Pontiac Grand Prix Hood and Cowl Weatherstrip Seal.

This hood and cowl seal is designed for 1978-1988 GM A-body, A-Special (A-SPEC), and G-body 2-door hardtop coupes with rear-wheel drive (RWD), replacing OEM# 20255857 and 25505704. Crafted with a dual-durometer extrusion and a flexible metal core, it ensures durability and a snug fit over the pinchweld for easy installation. Made in the USA, this seal is jet black, not ash gray, offering a refined concours-quality appearance. It fits a wide range of vehicles, including 1978-1988 Buick Century, Regal, Chevrolet El Camino, Malibu, Monte Carlo, GMC Caballero, Oldsmobile Cutlass models, and Pontiac Grand Am, Grand Prix, LeMans, and Grand LeMans. This part is built to keep your hood and cowl area sealed against water, dust, and debris, enhancing the longevity of your vehicle while maintaining its classic look. Backed by a 90-day warranty, it’s a reliable choice for restoring or maintaining your car or truck.

Features and Benefits
  • Keeps water and debris out of the hood and cowl area.
  • Easy installation with a secure fit over the pinchweld.
  • Durable dual-durometer construction with a flexible metal core.
  • Jet black finish for a sleek, concours-quality appearance.

$49.49
• SALE $39.95
Select Color/Material Options  
1978-1988 Pontiac Grand Prix Hood and Cowl Weatherstrip Seal.
1969-1972 Pontiac Grand Prix Hood to Cowl Weatherstrip Seal. '69-'72 Pontiac Grand Prix.

For the 1969-1972 Pontiac Grand Prix, this hood-to-cowl seal is a precision-crafted replacement for OEM# 9796564. Made from durable EPDM rubber, it features hardened nylon mounting pins that are perfectly positioned for a secure and easy installation. Designed to fit snugly between the hood and cowl, this seal ensures a tight barrier against water, dust, and debris, protecting your engine bay and enhancing the longevity of your classic car. Its jet-black finish provides a refined, concours-quality appearance, complementing the sleek lines of your Grand Prix. Proudly made in the USA, this part is built to match the high standards of your American-made collector car. Backed by Metro’s Platinum 30-year warranty, you can trust this seal to perform and last for decades.

Features and Benefits
  • Protects the engine bay from water, dust, and debris.
  • Hardened nylon pins ensure a secure and easy installation.
  • Jet-black finish enhances the car's classic look.
  • Made in the USA with high-quality EPDM rubber.

$49.49
• SALE $39.95
Select Color/Material Options  
1969-1972 Pontiac Grand Prix Hood to Cowl Weatherstrip Seal. '69-'72 Pontiac Grand Prix.
1978-1988 Pontiac Grand Prix Auxiliary T-Top Sealing Strips.

For cars with a factory T-top option, these auxiliary T-top sealing strips are 51 inches in length per side and come with an adhesive tape backing for easy installation. Designed to replace OEM #20139617, they are a perfect fit for 1978-1987 Buick Regal, Chevrolet Monte Carlo, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix models, as well as 1988 Chevrolet Monte Carlo and Oldsmobile Cutlass Supreme cars. Crafted by SUPERsoft, these seals are 30% softer and more durable than other brands, ensuring a snug fit and long-lasting performance. Unlike other products, they are made without accelerants or cheap fillers, which means they resist aging and cracking over time. These sealing strips are essential for keeping water, wind, and noise out of your vehicle, preserving its interior and enhancing your driving experience. Backed by a 30-year warranty from SUPERsoft, you can trust in their quality and durability.

Features and Benefits
  • Keeps water, wind, and noise out for a quieter ride.
  • Adhesive backing ensures quick and easy installation.
  • Made with premium materials for long-lasting durability.

$49.99
• SALE $39.95
Select Color/Material Options  
1978-1988 Pontiac Grand Prix Auxiliary T-Top Sealing Strips.

(98 Total Products)