Buick Weatherstrip & Seals - OEM-Fit Door, Trunk & Window Seals

Stop leaks, drafts, and road noise in your Buick 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 Buick —restoring a tight, quiet seal around your doors, trunk, hatch, and windows.

Our Buick 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 Buick , 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 Buick .

1963-1964 Buick Wildcat Windshield Pillar Post Weatherstrip Seals for Convertibles.

For convertible models, these windshield pillar post seals measure 22-1/2" long and are sold as a pair, designed to fit seamlessly into your classic 1963-1964 Buick LeSabre, Buick Wildcat, Chevrolet Impala, Oldsmobile Dynamic 88, Oldsmobile Starfire, Pontiac Bonneville, or Pontiac Catalina. Crafted by SUPERsoft, these seals are a high-quality reproduction with a smooth, flawless surface free of exposed cells, ensuring a clean and polished look. Built to withstand sunlight and UV exposure, they provide long-lasting durability and protection against the elements, keeping your interior safe from water leaks and weather damage. These seals are easy to install, fitting snugly along the windshield pillars to restore the original appearance and functionality of your convertible. Backed by SUPERsoft's 30-year warranty, you can trust in their quality and longevity.

Features and Benefits
  • Sunlight and UV resistant for long-term durability.
  • Smooth, flawless surface enhances the car's appearance.
  • Protects against water leaks and weather damage.
  • Easy installation for a snug, secure fit.

$128.99
• SALE $102.95
Select Color/Material Options  
1963-1964 Buick Wildcat Windshield Pillar Post Weatherstrip Seals for Convertibles.
1961-1962 Buick Electra Windshield Pillar Post Weatherstrip Seals for Convertibles.

For convertible models, these windshield pillar post seals measure 21 inches long and come as a pair, designed to fit a range of classic cars, including the 1961-1962 Buick Electra, Invicta, and LeSabre; 1961 Cadillac Eldorado and Series 62; 1961-1962 Chevrolet Impala; 1961-1962 Oldsmobile 98, Dynamic 88, Starfire, and Super 88; and 1961-1962 Pontiac Bonneville and Catalina. These seals are crafted with a smooth, flawless surface that resists sunlight and UV damage, ensuring long-lasting durability and a clean, polished look. Designed to replace worn or damaged seals, they provide a snug fit along the windshield pillars, keeping out wind, water, and debris while enhancing the overall appearance of your classic convertible. Backed by SuperSoft’s 30-year warranty, these seals offer peace of mind and reliable performance for decades to come.

Features and Benefits
  • Protects against wind, water, and debris for a quieter ride.
  • UV-resistant material ensures long-lasting durability.
  • Smooth, flawless surface enhances the car’s appearance.

$128.99
• SALE $102.95
Select Color/Material Options  
1961-1962 Buick Electra Windshield Pillar Post Weatherstrip Seals for Convertibles.
1961-1962 Buick Invicta Windshield Pillar Post Weatherstrip Seals for Convertibles.

For convertible models, these windshield pillar post seals measure 21 inches long and come as a pair, designed to fit a range of classic cars, including the 1961-1962 Buick Electra, Invicta, and LeSabre; 1961 Cadillac Eldorado and Series 62; 1961-1962 Chevrolet Impala; 1961-1962 Oldsmobile 98, Dynamic 88, Starfire, and Super 88; and 1961-1962 Pontiac Bonneville and Catalina. These seals are crafted with a smooth, flawless surface that resists sunlight and UV damage, ensuring long-lasting durability and a clean, polished look. Designed to replace worn or damaged seals, they provide a snug fit along the windshield pillars, keeping out wind, water, and debris while enhancing the overall appearance of your classic convertible. Backed by SuperSoft’s 30-year warranty, these seals offer peace of mind and reliable performance for decades to come.

Features and Benefits
  • Protects against wind, water, and debris for a quieter ride.
  • UV-resistant material ensures long-lasting durability.
  • Smooth, flawless surface enhances the car’s appearance.

$128.99
• SALE $102.95
Select Color/Material Options  
1961-1962 Buick Invicta Windshield Pillar Post Weatherstrip Seals for Convertibles.
1961 Buick LeSabre Windshield Pillar Post Weatherstrip Seals for Convertibles.

For convertible models, these windshield pillar post seals measure 21 inches long and come as a pair, designed to fit a range of classic cars, including the 1961-1962 Buick Electra, Invicta, and LeSabre; 1961 Cadillac Eldorado and Series 62; 1961-1962 Chevrolet Impala; 1961-1962 Oldsmobile 98, Dynamic 88, Starfire, and Super 88; and 1961-1962 Pontiac Bonneville and Catalina. These seals are crafted with a smooth, flawless surface that resists sunlight and UV damage, ensuring long-lasting durability and a clean, polished look. Designed to replace worn or damaged seals, they provide a snug fit along the windshield pillars, keeping out wind, water, and debris while enhancing the overall appearance of your classic convertible. Backed by SuperSoft’s 30-year warranty, these seals offer peace of mind and reliable performance for decades to come.

Features and Benefits
  • Protects against wind, water, and debris for a quieter ride.
  • UV-resistant material ensures long-lasting durability.
  • Smooth, flawless surface enhances the car’s appearance.

$128.99
• SALE $102.95
Select Color/Material Options  
1961 Buick LeSabre Windshield Pillar Post Weatherstrip Seals for Convertibles.
1978-1980 Buick Century Lower Door Sill Weatherstrip Seal, 78-88 GM G Body 2 Doors, Pair.

Designed for 1978-1988 GM G-Body 2-door vehicles, these lower door sill seals replace OEM #20376226 and are crafted to fit seamlessly between the panel and the lower part of the doors. Made from durable EPDM polymer, these seals ensure a snug, accurate fit, effectively keeping out moisture, dirt, and drafts while maintaining the integrity of your vehicle's interior. The sleek black finish and precise seal profile enhance both functionality and appearance, making them a reliable upgrade for your classic car or truck. Fitment includes popular models like the Buick Regal, Chevrolet Monte Carlo, El Camino, GMC Caballero, Oldsmobile Cutlass, and Pontiac Grand Prix from 1978 to 1988. Backed by a 90-day hassle-free warranty, these seals are a dependable choice for restoring your vehicle's comfort and style.

Features and Benefits
  • Keeps moisture and dirt out for a cleaner interior.
  • Made from long-lasting EPDM polymer for durability.
  • Fits perfectly between the panel and lower door for a secure seal.
  • Enhances the look and functionality of your classic car.

$129.49
• SALE $103.95
Select Color/Material Options  
1978-1980 Buick Century Lower Door Sill Weatherstrip Seal, 78-88 GM G Body 2 Doors, Pair.

(1583 Total Products)