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4" Aluminized Downpipe Back Single With Muffler
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        4" Aluminized Downpipe Back Single With Muffler | 2020-2023 GM 2500/3500 6.6L DURAMAX L5P (FLO-PRO)

        SKU: 431027

        Elevate your truck's performance with our 4" Aluminized Downpipe Back Single With Muffler, expertly crafted for the 2020-2023 GM 2500/3500 6.6L DURAMAX L5P models. This durable exhaust system features easy installation with preweld contour bends and specialized clamps, enhancing horsepower while reducing exhaust gas temperatures for an unbeatable driving experience. Don’t miss out on transforming your vehicle into a performance beast; choose Mel’s for your performance enhancement today!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1070.00 save $32.10
        • $1037.90

        Unlock superior performance with our meticulously crafted exhaust system, made from resilient 16 gauge aluminized steel or high-grade T409 stainless steel. Designed for effortless installation, this system includes preweld contour bends and specialized clamps, ensuring a reliable fit.

        Achieve remarkable horsepower benefits, reduced exhaust gas temperatures, and enhanced airflow specifically engineered for 2020-2023 GM 2500/3500 Duramax L5P models. With its OEM-style compatibility, this exhaust system provides both efficiency and a thrilling sound experience.

        Transform your vehicle into a performance beast. Choose Mel's for exceptional enhancements today!

          • SKU
            431027
          • Weight
            79 lbs
          • Manufacturer Part #
            FLO 20141
        • Material
          Aluminized, Stainless
        • Muffler
          With Muffler, Without Muffler
        • Brand
          Mel’s Manufacturing
        • Manufacturer
          Mel's Manufacturing
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        Shipping Times

        Most customers will see their parts within 3-5 business days. We will primarily ship with Purolator ground & DHL Express to ensure the fastest shipping possible.

        Please Note: These are only estimates and shipping time may vary depending on your location, out of country and rural locations expect longer wait times.

        Where Do We Ship 

        We will ship our products within Canada and the United States.

        Please Note: There are limitations what can be shipped to the United States.

        Damaged Shipments

        We provide the option to purchase insurance as we are not responsible for any damage while with a courier, we don’t often see issues, but it does happen. If you purchased insurance we will put in a claim, if no insurance was purchased there will be no refunds or exchanges.

        We accept the following payment methods:


        Return Policy

        It happens sometimes we would like to return it. Here are our return rules:

        • Prior to any return you must contact us and get an approval for a  RMA number
        • Product must be unopened and have no damage. 
        • You must pay for the shipping back, please insure so if anything happens you can make a claim, we are not responsible for damage during shipping and is the sole responsibility of the customer.
        • Regular products are subject to a 5% Restocking fee.
        • Items over 50 lbs. or special orders will be subject to a 20% Restocking fee.
        • Electronics & Tuning is a final sale and cannot be returned. 
        • Fitment Type
          Vehicle Specific
        YearMakeModelNotes
        2020GMCSierra 2500 HD
        2020GMCSierra 3500 HD
        2020ChevroletSilverado 2500 HD
        2020ChevroletSilverado 3500 HD
        2021ChevroletSilverado 2500 HD
        2021ChevroletSilverado 3500 HD
        2021GMCSierra 2500 HD
        2021GMCSierra 3500 HD
        2022ChevroletSilverado 2500 HD
        2022ChevroletSilverado 3500 HD
        2022GMCSierra 2500 HD
        2022GMCSierra 3500 HD
        2023ChevroletSilverado 2500 HD
        2023ChevroletSilverado 3500 HD
        2023GMCSierra 2500 HD
        2023GMCSierra 3500 HD