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4" Stainless Downpipe Back Single With Muffler
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        4" Stainless Downpipe Back Single With Muffler | 2001-2004.5 GM 2500/3500 6.6L DURAMAX (FLO-PRO)

        SKU: 432107

        Transform your 2001-2004.5 GM 2500/3500 6.6L Duramax with our 4" Performance Exhaust System, expertly crafted from durable aluminized steel and T409 stainless steel for longevity and resilience. Enjoy the benefits of high flow performance and enhanced horsepower, while the innovative design featuring pre-welded contour bends and TorcTite clamps ensures a hassle-free installation. Don't miss your chance to elevate your vehicle's sound and power—upgrade today with Mel’s Manufacturing and unleash your Duramax's true potential!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1110.00 save $33.30
        • $1076.70

        This high-performance exhaust system crafted from 16-gauge aluminized steel and T409 stainless steel transforms your 2001-2004.5 GM 2500/3500 6.6L Duramax into a powerhouse.

        The design emphasizes easy installation with innovative features like pre-welded contour bends and TorcTite clamps, ensuring a seamless fit and superior air flow. Experience a significant increase in horsepower, lower exhaust gas temperatures, and sound enhancements that resonate with every rev.

        Elevate your vehicle’s performance and unleash its true potential with Mel’s Manufacturing. Tailored for closed-course competition environments, this system provides the competitive edge you need. Seize the opportunity to enhance your driving experience today!

          • SKU
            432107
          • Weight
            72 lbs
          • Manufacturer Part #
            SS801
        • 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
        2001GMCSierra 2500
        2001GMCSierra 3500 HD
        2001GMCSierra 2500 HD
        2001ChevroletSilverado 2500
        2001ChevroletSilverado 3500 HD
        2001ChevroletSilverado 2500 HD
        2002GMCSierra 2500
        2002GMCSierra 3500 HD
        2002GMCSierra 2500 HD
        2002ChevroletSilverado 2500
        2002ChevroletSilverado 3500 HD
        2002ChevroletSilverado 2500 HD
        2003GMCSierra 2500
        2003GMCSierra 3500 HD
        2003GMCSierra 2500 HD
        2003ChevroletSilverado 2500
        2003ChevroletSilverado 3500 HD
        2003ChevroletSilverado 2500 HD
        2004GMCSierra 2500
        2004GMCSierra 3500 HD
        2004GMCSierra 2500 HD
        2004ChevroletSilverado 2500
        2004ChevroletSilverado 3500 HD
        2004ChevroletSilverado 2500 HD