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

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

Our GMC 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 , 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 .

1967-1972 GMC K35/K3500 Heater Box to Firewall Gasket. 6-3/4" O.D., 4-3/4" I.D.

Designed for 1967-1972 Chevrolet and GMC Pickup Trucks, this heater box-to-firewall gasket ensures a precise fit with its 6-3/4" outer diameter and 4-3/4" inner diameter. Crafted by Metro Moulded Parts, this gasket is made using over 50 tons of pressure, delivering exceptional definition and detail for a snug and reliable seal. It is specifically engineered to prevent air and moisture leaks where the heater box meets the firewall, enhancing the efficiency of your vehicle's heating system. This gasket fits a wide range of models, including Chevrolet C10, C20, C30, K10, K20, and K30 trucks, as well as GMC C15/C1500, C25/C2500, C35/C3500, K15/K1500, K25/K2500, and K35/K3500 trucks from 1967 to 1972. Backed by Metro's 30-year warranty, this part offers long-lasting performance and peace of mind.

Features and Benefits
  • Provides a tight seal to prevent air and moisture leaks.
  • Enhances heating system efficiency by maintaining proper airflow.
  • Built with high-pressure molding for exact fit and durability.

$36.99
• SALE $29.95
Select Color/Material Options  
1967-1972 GMC K35/K3500 Heater Box to Firewall Gasket. 6-3/4" O.D., 4-3/4" I.D.
1953-1955 GMC Truck Cowl Vent Weatherstrip Seal. For Models with Flat-Faced Cowls.

Designed for 1947-1955 Chevrolet and GMC trucks, this cowl vent seal measures 4 inches wide by 16-1/2 inches long and is specifically crafted for models with flat-faced cowls. Made by Metro Moulded Parts, this seal is built with over 50 tons of pressure, ensuring precise detailing and a perfect fit. It provides a snug, weatherproof barrier to keep water, dirt, and debris out of your truck's cowl vent area, preserving the integrity of your vehicle's interior. The durable material ensures long-lasting performance, even in harsh weather conditions. Backed by Metro's 30-year Platinum Warranty, this part offers peace of mind and exceptional value.

Features and Benefits
  • Keeps water and debris out of the cowl vent area.
  • Precision-molded for a perfect fit.
  • Built to withstand harsh weather conditions.

$38.49
• SALE $30.95
Select Color/Material Options  
1953-1955 GMC Truck Cowl Vent Weatherstrip Seal. For Models with Flat-Faced Cowls.
1954-1955 GMC Truck Cowl Vent Weatherstrip Seal. NOT for Models with Flat-Faced Cowls.

Designed for 1954-1955 Chevrolet and GMC trucks and cars, this cowl vent seal measures 3-1/4" wide at the side and 16-5/8" long, ensuring a precise fit for models without flat-faced cowls. Crafted by Metro Moulded Parts, this seal is made with over 50 tons of pressure, delivering exceptional definition and detail for a snug, reliable fit. Its durable construction effectively prevents water, dirt, and debris from entering the cowl area, protecting your vehicle's interior and components. The seal is easy to install, fitting seamlessly into the cowl vent opening to restore functionality and maintain the classic look of your vehicle. Backed by Metro's 30-year Platinum Warranty, this part guarantees long-lasting performance and peace of mind.

Features and Benefits
  • Keeps water and debris out of the cowl area.
  • Precision-molded for a perfect fit.
  • Easy to install for a secure seal.

$38.49
• SALE $30.95
Select Color/Material Options  
1954-1955 GMC Truck Cowl Vent Weatherstrip Seal. NOT for Models with Flat-Faced Cowls.
1960-1961 GMC 1000 Clutch and Brake Pedal Pads. 2-1/2" Wide X 3-7/8" Long.

For 1947-1961 Chevrolet and GMC trucks, these clutch and brake pedal pads measure 2-1/2" wide by 3-7/8" long, offering a precise fit for your classic truck. Designed with proper curves and detailed grooves, they easily slip onto the pedals, ensuring a secure and snug fit while maintaining the original factory look. These pads are crafted to match the vintage style of your truck, enhancing both functionality and appearance. Fitment includes a wide range of models, such as the 1947 Chevrolet Truck, 1947 GMC EC101, 1950 GMC FC101, and up to the 1961 GMC 2500 Series Truck. Backed by Metro’s Platinum Warranty, these pads are covered for 30 years, giving you peace of mind with your purchase.

Features and Benefits
  • Provides a secure grip for safer driving.
  • Matches the original design for a classic look.
  • Easy to install with a slip-on design.
  • Durable construction ensures long-lasting use.

$39.49
• SALE $31.95
Select Color/Material Options  
1960-1961 GMC 1000 Clutch and Brake Pedal Pads. 2-1/2" Wide X 3-7/8" Long.
1960-1961 GMC 1500 Clutch and Brake Pedal Pads. 2-1/2" Wide X 3-7/8" Long.

For 1947-1961 Chevrolet and GMC trucks, these clutch and brake pedal pads measure 2-1/2" wide by 3-7/8" long, offering a precise fit for your classic truck. Designed with proper curves and detailed grooves, they easily slip onto the pedals, ensuring a secure and snug fit while maintaining the original factory look. These pads are crafted to match the vintage style of your truck, enhancing both functionality and appearance. Fitment includes a wide range of models, such as the 1947 Chevrolet Truck, 1947 GMC EC101, 1950 GMC FC101, and up to the 1961 GMC 2500 Series Truck. Backed by Metro’s Platinum Warranty, these pads are covered for 30 years, giving you peace of mind with your purchase.

Features and Benefits
  • Provides a secure grip for safer driving.
  • Matches the original design for a classic look.
  • Easy to install with a slip-on design.
  • Durable construction ensures long-lasting use.

$39.49
• SALE $31.95
Select Color/Material Options  
1960-1961 GMC 1500 Clutch and Brake Pedal Pads. 2-1/2" Wide X 3-7/8" Long.

(1091 Total Products)