GMC K3500 Weatherstrip & Seals - OEM-Fit Door, Trunk & Window Seals

Stop leaks, drafts, and road noise in your GMC K3500 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 GMC K3500—restoring a tight, quiet seal around your doors, trunk, hatch, and windows.

Our GMC K3500 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 GMC K3500, 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 GMC K3500.

1978-1980 GMC K3500 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
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1978-1980 GMC K3500 Brake Master Cylinder Cover Weatherstrip Seal. Fits 71-83 GM's.
1988-1998 GMC K3500 Door Weatherstrip Seal.

For extended cab trucks with an access door, this front right-side door seal fits 1988-2000 GMC and Chevrolet C/K 1500, 2500, and 3500 models, replacing OEM part #15023772. Designed specifically for these trucks, this seal ensures a snug fit to keep out water, wind, and noise, enhancing your driving experience. Made by SUPERsoft, it is 30% softer and more durable than other brands, offering long-lasting performance. Unlike other seals, it is crafted without accelerants or cheap fillers, preventing premature aging or cracking. This high-quality seal is easy to install, fitting seamlessly into the door frame to restore the original weatherproofing of your vehicle. Backed by a 90-day warranty, it’s a reliable choice for maintaining your truck’s comfort and protection.

Features and Benefits
  • Keeps water, wind, and noise out for a quieter ride.
  • Made with durable, soft material for a long-lasting seal.
  • Easy to install for a perfect fit on your truck.
  • Free of cheap fillers to prevent cracking or aging.

$70.49
• SALE $56.95
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1988-1998 GMC K3500 Door Weatherstrip Seal.
1992-2000 GMC K3500 Door Weatherstrip Seal Rear, 92-99 GM Full Size SUV, 92 00 GM C/K 3500 Truck, Left or Right.

Designed for the rear doors of 1992-2000 Chevrolet and GMC Suburban, Tahoe, Yukon, and Blazer trucks, as well as 1999-2000 Cadillac Escalade trucks, this high-quality door seal ensures a snug fit and long-lasting performance. Made from durable EPDM polymer, it presses securely onto the pinchweld on the body, fitting either the left or right side. Crafted to original specifications, it features an accurate seal profile and incorporates all original details for a precise fit. This seal reduces drafts and road noise, enhancing comfort and driving experience. Its ozone-resistant material ensures durability and longevity, even in harsh weather conditions. Backed by a 90-day hassle-free warranty, this part is a reliable choice for restoring your vehicle's functionality and comfort.

Features and Benefits
  • Fits securely on the pinchweld for easy installation.
  • Reduces drafts and road noise for a quieter ride.
  • Made from ozone-resistant EPDM for long-lasting durability.
  • Designed to original specs for a precise and accurate fit.

$79.99
• SALE $63.95
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1992-2000 GMC K3500 Door Weatherstrip Seal Rear, 92-99 GM Full Size SUV, 92 00 GM C/K 3500 Truck, Left or Right.
1979-1982 GMC K3500 Upper Door Weatherstrip Seal, 78-82 GM Full Size Truck and SUV, Each.

This upper door seal is designed for 1978-1982 GM full-size trucks and SUVs, fitting the passenger (right) side only. It replaces OEM #14016512 and is crafted to mount on the upper part of the door using weatherstrip adhesive glue (not included). Made from high-quality, ozone-resistant EPDM rubber, this seal ensures a precise fit and long-lasting durability. Its accurate seal profile effectively reduces drafts and road noise, enhancing the comfort of your ride. This part is specifically tailored for models like the Chevrolet C10, K10, K20, K30, K5 Blazer, GMC Jimmy, and other compatible trucks and SUVs from 1978 to 1982. With its durable construction and easy installation, this seal is an excellent choice for restoring your vehicle's weatherproofing and maintaining its original performance.

Features and Benefits
  • Crafted from ozone-resistant EPDM rubber for long-lasting durability.
  • Reduces drafts and road noise for a quieter cabin.
  • Designed for a precise fit to ensure proper sealing.
  • Easy to install with weatherstrip adhesive glue (not included).

$79.99
• SALE $63.95
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1979-1982 GMC K3500 Upper Door Weatherstrip Seal, 78-82 GM Full Size Truck and SUV, Each.
1979-1986 GMC K3500 Rear Window Weatherstrip Seal, 73-87 GM Full Size Truck.

Designed for 1973-1987 Chevrolet and GMC Pickup Trucks, this rear window seal is crafted to fit perfectly on the body before the glass is installed. Made from durable, ozone-resistant EPDM polymer, it ensures a snug and accurate seal, reducing drafts and road noise while maintaining the original profile and details for a precise fit. This seal is intended for use during glass replacement and features a self-locking strip that secures the glass in place, providing a reliable and long-lasting hold. Please note, this weatherstrip is not compatible with original sliders. Its high-quality construction guarantees a great fit and extended life, making it an essential upgrade for your truck.

Features and Benefits
  • Provides a tight seal to reduce drafts and noise.
  • Made from ozone-resistant EPDM polymer for durability.
  • Designed for easy installation during glass replacement.
  • Maintains original details for a factory-accurate fit.

$101.99
• SALE $81.95
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1979-1986 GMC K3500 Rear Window Weatherstrip Seal, 73-87 GM Full Size Truck.

(50 Total Products)