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

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$80.49
SKU:
LM 121-K
UPC:
00642535983085
Unit Of Measure:
Each
Count:
1
OEM:
14016511

The Metro Moulded Parts LM 121-K Upper Door Seal is a high-quality replacement part meticulously designed for 1978-1982 GM full-size trucks and SUVs, including popular models like the Chevrolet C10, C20, K5 Blazer, and GMC Jimmy. Replacing OEM Part #14016511, this seal is crafted to the original specifications, ensuring a precise fit and exceptional functionality. Made with premium EPDM ozone-resistant rubber, this upper left driver-side door seal delivers long-lasting durability, effectively reducing drafts, road noise, and water leaks. Its resilient and pliable material enhances sealing performance while maintaining the structural integrity of your vehicle. Whether you call it a door weatherstrip, door gasket, or upper door seal, this product offers an unbeatable combination of style, strength, and reliability for restoring your vehicle's comfort and quiet ride. Designed with an accurate profile for an exact fit to your classic GM truck’s left upper door area, this seal installs easily using weatherstrip adhesive glue (not included), requiring no additional adjustments or tools. The robust EPDM rubber not only safeguards against harsh weather elements but also complements the classic lines of your vehicle’s design. This replacement is commonly searched for under terms like GM truck door seal, upper weatherstrip, GM door gasket, or driver's side rubber seal, making it an essential addition to your restoration or maintenance project. Built with quality that’s trusted by professionals and enthusiasts alike, the LM 121-K Upper Door Seal combines form, function, and durability to keep your classic GM truck or SUV performing at its best. Backed by Metro's industry-leading 30-year platinum warranty, you can have peace of mind knowing this part is guaranteed to last. Upgrade your vehicle now and experience the difference in performance and comfort—invest in the LM 121-K Upper Door Seal and drive with confidence today!


Features
  • Constructed from premium ozone-resistant EPDM rubber for superior durability and resilience.
  • Designed for quick and secure installation with weatherstrip adhesive glue.
  • Precisely matches OEM Part #14016511 for long-lasting compatibility and a tight fit.
  • Reduces wind noise, drafts, and water leaks for a quieter and more comfortable ride.
View Product Fitments
YearMakeModelSubmodelNotes
1978GMCK35
1978ChevroletC30
1978GMCJimmy
1978GMCC25 Suburban
1978ChevroletC20 Suburban
1978GMCC15 Suburban
1978ChevroletK5 Blazer
1978ChevroletK30
1978ChevroletC20
1978ChevroletC10
1978GMCK25 Suburban
1978ChevroletK10 Suburban
1978ChevroletK10
1978ChevroletC10 Suburban
1978GMCK25
1978GMCK15
1978GMCC35
1978GMCC25
1978ChevroletK20 Suburban
1978ChevroletK20
1978GMCK15 Suburban
1978GMCC15
1979GMCK1500
1979ChevroletC20 Suburban
1979GMCK2500
1979GMCC1500
1979ChevroletK5 Blazer
1979ChevroletK20 Suburban
1979ChevroletK10
1979ChevroletC10 Suburban
1979ChevroletK30
1979ChevroletC10
1979GMCK2500 Suburban
1979ChevroletK10 Suburban
1979ChevroletC20
1979GMCC3500
1979ChevroletK20
1979ChevroletC30
1979GMCK3500
1979GMCC2500 Suburban
1979GMCC2500
1979GMCK1500 Suburban
1979GMCJimmy
1979GMCC1500 Suburban
1980GMCK2500
1980GMCJimmy
1980ChevroletK5 Blazer
1980GMCC3500
1980ChevroletK10
1980GMCK2500 Suburban
1980GMCK1500
1980ChevroletK20 Suburban
1980ChevroletC20
1980GMCK1500 Suburban
1980ChevroletK30
1980ChevroletK20
1980ChevroletC10 Suburban
1980GMCK3500
1980GMCC1500 Suburban
1980ChevroletC20 Suburban
1980ChevroletK10 Suburban
1980ChevroletC10
1980GMCC2500 Suburban
1980GMCC2500
1980GMCC1500
1980ChevroletC30
1981GMCC1500 Suburban
1981ChevroletK10
1981ChevroletC30
1981GMCJimmy
1981ChevroletC20 Suburban
1981ChevroletK30
1981ChevroletC20
1981GMCK2500 Suburban
1981GMCK1500
1981ChevroletK10 Suburban
1981ChevroletC10 Suburban
1981GMCC2500 Suburban
1981GMCC2500
1981ChevroletC10
1981GMCC1500
1981ChevroletK5 Blazer
1981GMCK1500 Suburban
1981ChevroletK20 Suburban
1981ChevroletK20
1981GMCK3500
1981GMCK2500
1981GMCC3500
1982GMCK1500
1982ChevroletC20 Suburban
1982GMCK3500
1982GMCK2500
1982GMCC1500 Suburban
1982ChevroletK5 Blazer
1982ChevroletK10 Suburban
1982ChevroletK10
1982ChevroletC10 Suburban
1982ChevroletK30
1982ChevroletC10
1982GMCK2500 Suburban
1982ChevroletK20 Suburban
1982ChevroletC20
1982GMCC3500
1982ChevroletK20
1982ChevroletC30
1982GMCC2500 Suburban
1982GMCC2500
1982GMCC1500
1982GMCK1500 Suburban
1982GMCJimmy
Metro leading warranty is the best in the industy. This part carries our platinum warranty and is guaranteed for a full 30 years 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.

100% Satisfaction Guaranteed

Returns Policy

You may return items within 60 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note we maintain an extensive inventory of parts to provide you the best possible service. Due to the unique nature of our products, however, certain items periodically outsell our best inventory estimates. Out of stock items are given the highest possible priority and are filled as quickly as possible.

  • What is rubber?
    The first rubber material used for every sort of rubber product was natural rubber. Natural rubber comes from the rubber trees in South America and Asia. Years ago, natural rubber was used to make tires and weatherstripping. The first rubber tires were actually white, but researchers added carbon black to make tires stronger. Today's automotive rubber is usually made from a synthetic formulation known as EPDM.
  • What kind of rubber are Metro parts made of?
    METRO rubber is made from an advanced, propriety EPDM formula which has superior ozone and UV resistance. METRO's rubber products are also molded using high heat and 40-to-125 tons of pressure, which gives them a longer life and clean, smooth looks.
  • What is Dense Rubber?
    Dense rubber is harder and used for gas and brake pads, hood bumpers etc.
  • What is Cellular Sponge Rubber?
    Cellular sponge rubber is used for weatherstripping , to seal doors, trunks, hoods and roofs. Sponge rubber varies in degree of softness from one manufacturer to the other. The greater the softness, the better. Softer rubber does a better job filling in the tiny cracks and bumps along surfaces it presses against. This prevents water leakage. Softer weatherstripping also makes it easier to close doors, trunks and tailgates. METRO's SUPERSoft sponge rubber is the softest and most durable auto rubber you can buy. SUPERsoft has a unique closed micro-cell structure. This cell structure helps give SUPERsoft its superior softness. The material formula and secret manufacturing process gives SUPERsoft better shape "memory", better looks, and better durability and resistance to abrasion, tearing and ripping. Unlike other auto weatherstripping, SUPERsoft does not absorb water – a key condition to completely sealing out water.
  • What makes Metro’s rubber superior?
    METRO’s rubber is made from an advanced, propriety EPDM formula which has superior ozone and UV resistance. METRO’s rubber products are also molded using high heat and 40-to-125 tons of pressure, which gives them a longer life and clean, smooth looks.

    METRO’s parts quality, and look and feel usually surpasses the quality of the original rubber parts. All the fine details of the original parts are precisely duplicated, even the details that won't show after installation. The most advanced materials are combined with the latest technologies to make METRO rubber the highest quality rubber parts available.

    METRO’s SUPERSoft sponge rubber is the softest and most durable auto rubber you can buy. SUPERsoft has a unique closed micro-cell structure. This cell structure helps give SUPERsoft its superior softness. The material formula and secret manufacturing process gives SUPERsoft better shape "memory", better looks, and better durability and resistance to abrasion, tearing and ripping. Unlike other auto weatherstripping, SUPERsoft does not absorb water – a key condition to completely sealing out water.
  • How do I maintain rubber?
    To give your rubber that clean new, jet black look, start by cleaning it with mild soap and water. Follow with a rubber & vinyl protectant or even a silicone-based furniture polish. Do not spray protectants directly on the rubber. Rather, apply it to a damp rag then wipe it on. Some rubber will naturally bleed paraffin, which will look like hardened candle wax. Use a solvent to carefully remove any visible paraffin.
  • What are rubber's enemies?
    Rubber contains plasticizers that eventually "evaporate" from rubber, leaving it hardened and cracked. This is a naturally occurring process, but heat, sunlight, smog, chemicals and gasoline/oil can shorten the life of rubber parts.
  • What is Metro Weatherstripping?
    All of Metro's Molded Weatherstripping is manufactured from the highest quality sponge material available and is always very detailed, exceeding that of our competition . We are constantly adding to our list of molded weatherstripping and other reproduction parts. If you need a type not listed, please contact our customer service office. It may be in the works or we may be interested in reproducing it.

    • Made from smooth dies for a sleek appearance.
    • Accurate profiles that fit like the originals, with well defined details.
    • Vulcanized in a clean bath, with no residue for you to clean off.
    • Tear resistant rubber.
    • Jet black extrusions for a show winning look.
    • Sunlight and ozone resistant rubber that won't shrink or crack.
    • Made from actual size dies, which means no guesswork on the finished profile size.
    • Added sealing ribs where needed.
    • Made to the correct softness, like the original. Not made from a work all rubber compound.
  • Why choose Metro Molded Roof Rail Seals?
    Metro makes a huge line of Roof Rail Seals that have that "show winning" look and fit. Our Convertible Top Seals all incorporate steel cores and studs for a perfect fit.
  • Why choose Metro Convertible Pillar Post Seals?
    Metro's Convertible Pillar Post Seals are molded in one piece, just like the originals, not merely spliced into place like some of the competitors' reproductions! Be sure to ask before you buy.
  • Why choose Metro Rear Roll-Up Seals?
    All of the Rear Roll-Up Seals Metro makes go beyond just being functional. They are reproductions that, in most cases, have steel cores, are molded with a one-piece construction to eliminate splice marks, and are better than OEM in fit and quality.
  • Why choose Metro Auxiliary Door, Window & Trunk Seals?
    Finely crafted and detailed, with 100% SATISFACTION GUARANTEED. Metro's Door Lock Pillar Seals are the best available anywhere, with molded-in steel cores and superbly detailed outer rubber.
  • Why choose Metro Vent Window Seals?
    Our Vent Windows have molded curves and a non-wrinkling lip design, making them the highest quality reproductions available.
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