4" Stainless Downpipe Back Single Without Muffler
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        4" Stainless Downpipe Back Single Without Muffler | 2001-2004.5 GM 2500/3500 6.6L DURAMAX (FLO-PRO)

        SKU: 432112

        Upgrade your truck with Mel’s high-performance exhaust system designed for 2001-2004.5 GM 2500/3500 6.6L DURAMAX engines, ensuring an impressive performance boost and enhanced airflow. Crafted from durable aluminized steel or premium stainless steel, this system offers easy installation with pre-welded bends and included clamps, making it perfect for any racing enthusiast. Don’t miss out on the opportunity to unleash your engine's true potential; order now to transform your driving experience!

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        Mel’s Manufacturing
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Mel’s Manufacturing
          • 3% off
          $1050.00 save $31.50
        • $1018.50

        This high-performance exhaust system, made of durable 16 gauge aluminized steel or premium T409 stainless steel, is engineered for easy installation, featuring pre-welded contour bends and included clamps for a secure fit. Experience a marked increase in horsepower and significant reductions in exhaust gas temperatures with Mel's innovative design.

        Whether your vehicle is aimed at competitive racing or needs that extra edge on the track, this system optimizes airflow for maximum engine efficiency and performance, ensuring that your DURAMAX engine operates at its best.

        Elevate your driving experience and unleash the true potential of your truck with this exhaust upgrade. Order now and hear the power of Mel's system for yourself!

          • SKU
            432112
          • Weight
            62 lbs
          • Manufacturer Part #
            SS801NM
        • 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