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Metro Moulded Parts Upper Door Seal, 78-82 GM Full Size Truck and Suv, Fits Left Side Only, Each LM 121-K

Metro Moulded Parts Upper Door Seal, 78-82 GM Full Size Truck and Suv, Fits Left Side Only, Each LM 121-K
$125.99 ea
NEWARRIVING SOONEstimated Ship Date 06/03/2026 (If Ordered Today)12 Available from METRO MOULDED PARTS, INC. as of 05/26/2026
Model: 5071809
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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This upper door seal is designed for 1978-1982 GM full-size trucks and SUVs, fitting the left side only. It replaces OEM #14016511 and is crafted to mount on the upper part of the driver’s 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 Chevrolet and GMC models, including C10, C20, C30, K10, K20, K30, K5 Blazer, Suburban, Jimmy, and more 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 a quiet cabin.

Features:
  • Easy to install with weatherstrip adhesive glue (not included).
  • Ensures a precise fit for 1978-1982 GM full-size trucks and SUVs.
  • Made from ozone-resistant EPDM rubber for long-lasting durability.
  • Reduces drafts and road noise for a quieter ride.
About Metro Moulded Parts, Inc.

  • Metro parts are made with a proprietary closed micro-cell technology. All parts have very smooth skin that is free of exposed cells or flaws. Furthermore, you can be confident that your parts will continue to retain a uniform size, provide even compression, and retain superior memory. Other brands are coated with an outer latex skin that will bruise, gall, blister, glaze, crack, and peel.
  • Parts are molded using computerized temperature control for consistent cure cycles. This prevents scorching or under-cured parts that will last longer, look superior, and perform better.
  • The parts are created with over 50 tons of pressure for perfect definition and exact detailing.
  • Metro parts are made with the latest advancements in CAD and CNC milling for proper 3D contouring, assuring a perfect fit and OEM quality appearance. Our molds are milled from single metal blocks to tolerances of 0.001 in. to minimize flash lines in finished parts. Mold cavities are polished regularly to product parts with high luster and smooth contours.
  • Metro parts are made locally in the USA.
  • Metro products are fabricated from the highest grades of virgin rubber using state-of-the-art, computerized mold-making techniques, utilizing more than 40 different rubber compounds to match the functions and features of the original part as closely as possible.
  • Metro parts are 30% softer and more durable than other brands. Simply the softest reproduction in the market.
  • In addition, Metro parts provides extraordinary resistance to hardening and decay caused by exposure to ozone and UV light.
  • None of Metro's parts use accelerants or cheap fillers in the molding processes, which can cause the part to prematurely age and fail.

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 Submodel Years
Chevrolet C10 Suburban Custom Deluxe 1978 - 1980
Chevrolet C10 Suburban Custom 1981 - 1982
Chevrolet C10 Suburban Deluxe 1981
Chevrolet C10 Suburban Scottsdale 1978 - 1982
Chevrolet C10 Suburban Silverado 1978 - 1982
Chevrolet C10 Big Ten 1978 - 1980
Chevrolet C10 Cheyenne 1978 - 1981
Chevrolet C10 Custom Deluxe 1978 - 1980
Chevrolet C10 Custom 1978 - 1982
Chevrolet C10 Deluxe 1981
Chevrolet C10 Scottsdale 1978 - 1982
Chevrolet C10 Silverado 1978 - 1982
Chevrolet C20 Suburban Custom Deluxe 1978 - 1980
Chevrolet C20 Suburban Custom 1981 - 1982
Chevrolet C20 Suburban Deluxe 1981
Chevrolet C20 Suburban Scottsdale 1978 - 1982
Chevrolet C20 Suburban Silverado 1979 - 1982
Chevrolet C20 Cheyenne 1978 - 1981
Chevrolet C20 Custom Deluxe 1978 - 1980
Chevrolet C20 Custom 1981 - 1982
Chevrolet C20 Deluxe 1981
Chevrolet C20 Scottsdale 1978 - 1982
Chevrolet C20 Silverado 1978 - 1982
Chevrolet C30 Base 1978 - 1982
Chevrolet C30 Cheyenne 1978 - 1981
Chevrolet C30 Custom Deluxe 1978 - 1980
Chevrolet C30 Custom 1981 - 1982
Chevrolet C30 Deluxe 1981
Chevrolet C30 Scottsdale 1978 - 1982
Chevrolet C30 Silverado 1978 - 1982
Chevrolet K10 Suburban Custom Deluxe 1978 - 1980
Chevrolet K10 Suburban Custom 1981 - 1982
Chevrolet K10 Suburban Deluxe 1981
Chevrolet K10 Suburban Scottsdale 1978 - 1982
Chevrolet K10 Suburban Silverado 1979 - 1982
Chevrolet K10 Cheyenne 1978 - 1981
Chevrolet K10 Custom Deluxe 1978 - 1980
Chevrolet K10 Custom 1981 - 1982
Chevrolet K10 Deluxe 1981
Chevrolet K10 Scottsdale 1978 - 1982
Chevrolet K10 Silverado 1978 - 1982
Chevrolet K20 Suburban Custom Deluxe 1978 - 1980
Chevrolet K20 Suburban Custom 1981 - 1982
Chevrolet K20 Suburban Deluxe 1981
Chevrolet K20 Suburban Scottsdale 1978 - 1982
Chevrolet K20 Suburban Silverado 1979 - 1982
Chevrolet K20 Cheyenne 1978 - 1981
Chevrolet K20 Custom Deluxe 1978 - 1980
Chevrolet K20 Custom 1981 - 1982
Chevrolet K20 Deluxe 1981
Chevrolet K20 Scottsdale 1978 - 1982
Chevrolet K20 Silverado 1978 - 1982
Chevrolet K30 Cheyenne 1978 - 1981
Chevrolet K30 Custom Deluxe 1978 - 1980
Chevrolet K30 Custom 1981 - 1982
Chevrolet K30 Deluxe 1981
Chevrolet K30 Scottsdale 1978 - 1982
Chevrolet K30 Silverado 1978 - 1982
Chevrolet K5 Blazer Cheyenne 1978 - 1980
Chevrolet K5 Blazer Custom Deluxe 1978 - 1980
Chevrolet K5 Blazer Custom 1981 - 1982
Chevrolet K5 Blazer Deluxe 1981
Chevrolet K5 Blazer Silverado 1978 - 1982
GMC C15 Suburban Base 1978
GMC C15 Suburban High Sierra 1978
GMC C15 Suburban Sierra Classic 1978
GMC C15 Suburban Sierra Grande 1978
GMC C1500 Suburban Base 1979 - 1982
GMC C1500 Suburban High Sierra 1979 - 1982
GMC C1500 Suburban Sierra Classic 1979 - 1982
GMC C1500 Suburban Sierra Grande 1979 - 1982
GMC C1500 Base 1979 - 1982
GMC C1500 Heavy Half 1979 - 1980
GMC C1500 High Sierra 1979 - 1982
GMC C1500 Sierra Classic 1979 - 1982
GMC C1500 Sierra Grande 1979 - 1982
GMC C1500 Street Coupe 1979 - 1982
GMC C15 Base 1978
GMC C15 Heavy Half 1978
GMC C15 High Sierra 1978
GMC C15 Sierra Classic 1978
GMC C15 Sierra Grande 1978
GMC C15 Street Coupe 1978
GMC C25 Suburban Base 1978
GMC C25 Suburban High Sierra 1978
GMC C25 Suburban Sierra Classic 1978
GMC C25 Suburban Sierra Grande 1978
GMC C2500 Suburban Base 1979 - 1982
GMC C2500 Suburban High Sierra 1979 - 1982
GMC C2500 Suburban Sierra Classic 1979 - 1982
GMC C2500 Suburban Sierra Grande 1979 - 1982
GMC C2500 Base 1979 - 1982
GMC C2500 High Sierra 1979 - 1982
GMC C2500 Sierra Classic 1979 - 1982
GMC C2500 Sierra Grande 1979 - 1982
GMC C25 Base 1978
GMC C25 High Sierra 1978
GMC C25 Sierra Classic 1978
GMC C25 Sierra Grande 1978
GMC C3500 Base 1979 - 1982
GMC C3500 High Sierra 1979 - 1982
GMC C3500 Sierra Classic 1979 - 1982
GMC C3500 Sierra Grande 1979 - 1982
GMC C35 Base 1978
GMC C35 High Sierra 1978
GMC C35 Sierra Classic 1978
GMC C35 Sierra Grande 1978
GMC Jimmy Base 1978 - 1982
GMC Jimmy High Sierra 1978 - 1982
GMC Jimmy Sierra Classic 1978 - 1982
GMC Jimmy Sierra Grande 1978 - 1982
GMC Jimmy Street Coupe 1978 - 1982
GMC K15 Suburban Base 1978
GMC K15 Suburban High Sierra 1978
GMC K15 Suburban Sierra Classic 1978
GMC K15 Suburban Sierra Grande 1978
GMC K1500 Suburban Base 1979 - 1982
GMC K1500 Suburban High Sierra 1979 - 1982
GMC K1500 Suburban Sierra Classic 1979 - 1982
GMC K1500 Suburban Sierra Grande 1979 - 1982
GMC K1500 Base 1979 - 1982
GMC K1500 High Sierra 1979 - 1982
GMC K1500 Sierra Classic 1979 - 1982
GMC K1500 Sierra Grande 1979 - 1982
GMC K15 Base 1978
GMC K15 High Sierra 1978
GMC K15 Sierra Classic 1978
GMC K15 Sierra Grande 1978
GMC K25 Suburban Base 1978
GMC K25 Suburban High Sierra 1978
GMC K25 Suburban Sierra Classic 1978
GMC K25 Suburban Sierra Grande 1978
GMC K2500 Suburban Base 1979 - 1982
GMC K2500 Suburban High Sierra 1979 - 1982
GMC K2500 Suburban Sierra Classic 1979 - 1982
GMC K2500 Suburban Sierra Grande 1979 - 1982
GMC K2500 Base 1979 - 1982
GMC K2500 High Sierra 1979 - 1982
GMC K2500 Sierra Classic 1979 - 1982
GMC K2500 Sierra Grande 1979 - 1982
GMC K25 Base 1978
GMC K25 High Sierra 1978
GMC K25 Sierra Classic 1978
GMC K25 Sierra Grande 1978
GMC K3500 Base 1979 - 1982
GMC K3500 High Sierra 1979 - 1982
GMC K3500 Sierra Classic 1979 - 1982
GMC K3500 Sierra Grande 1979 - 1982
GMC K35 Base 1978
GMC K35 High Sierra 1978
GMC K35 Sierra Classic 1978
GMC K35 Sierra Grande 1978

Specifications:

Brand Metro Moulded Parts
Universal Part No
Warranty Metro leading warranty is the best in the industy. This part carries our standard warranty and is guaranteed for a full 90 days from date of purchase. We promise that if your Metro part fails during this time we will replace it free of charge. That is our "No Hassle" guarantee. Do not settle for a simple promise of satisfaction.

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Metro Moulded Parts Upper Door Seal, 78-82 GM Full Size Truck and Suv, Fits Left Side Only, Each LM 121-K:
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