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        Duramax CP3K Injection Pump 2001-2016 GM2500/3500HD Duramax Fleece Performance

        SKU: FPE-DMAX-CP3K-FQWW

        The Fleece Performance CP3K is a new, modified LBZ CP3 pump that removes the factory fuel flow restriction above 3,000 RPM—no core charge, supports high power.

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        Fleece Performance
        Vehicle Specific
        Check if this part fits your vehicle.
        • Brand: Fleece Performance
        • $1882.95

        Out of stock

        Unlock the full potential of your Duramax with the Fleece Performance CP3K, a modified LBZ CP3 pump engineered to eliminate the factory fuel flow restriction that limits performance above 3,000 RPM. Unlike a stock CP3, which loses fuel flow and rail pressure at higher RPMs (resulting in lost horsepower), the CP3K maintains optimal fuel delivery throughout your entire powerband. This means more consistent rail pressure, improved throttle response, and more horsepower when you need it most.
        Built from a brand new Bosch CP3—no core charge or return required—the CP3K is a cost-effective, direct-fit upgrade for high-performance and tuned Duramax applications.

        Application Note: If installing on a 2001–2005 LB7 or LLY, the fuel pressure regulator scaling must be adjusted for proper operation.

        Key Features:

        • Brand new Bosch CP3 (not remanufactured)
        • No core charge or core return
        • Eliminates high-RPM fuel flow restriction
        • Maintains desired rail pressure at all RPMs
        • Direct-fit for LBZ; fits LB7/LLY with regulator scaling


        Ideal for street, towing, or competition builds seeking reliable, high-flow fuel delivery and maximum diesel performance.

          • SKU
            FPE-DMAX-CP3K-FQWW
          • Weight
            15 lbs
          • Dimensions (L x W x H)
            10 x 10 x 8 in
          • Barcode
            635909310488
          • Manufacturer Part #
            FPE-DMAX-CP3K
        • Engine Year
          2001-2016
        • Property 65 Warning
          CALIFORNIA WARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov
        • Vehicle Type
          Truck/SUV
        • Brand
          Fleece Performance
        • Country of Origin
          USA
        • Sold As
          Each
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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 HD
        2001GMCSierra 3500
        2001ChevroletSilverado 2500 HD
        2001ChevroletSilverado 3500
        2002GMCSierra 2500 HD
        2002GMCSierra 3500
        2002ChevroletSilverado 2500 HD
        2002ChevroletSilverado 3500
        2003GMCSierra 2500 HD
        2003GMCSierra 3500
        2003ChevroletSilverado 2500 HD
        2003ChevroletSilverado 3500
        2004GMCSierra 2500 HD
        2004GMCSierra 3500
        2004ChevroletSilverado 2500 HD
        2004ChevroletSilverado 3500
        2005GMCSierra 2500 HD
        2005GMCSierra 3500
        2005ChevroletSilverado 2500 HD
        2005ChevroletSilverado 3500
        2006GMCSierra 2500 HD
        2006GMCSierra 3500
        2006ChevroletSilverado 2500 HD
        2006ChevroletSilverado 3500
        2007GMCSierra 2500 HD
        2007ChevroletSilverado 2500 HD
        2008GMCSierra 2500 HD
        2008ChevroletSilverado 2500 HD
        2009GMCSierra 2500 HD
        2009ChevroletSilverado 2500 HD
        2010GMCSierra 2500 HD
        2010ChevroletSilverado 2500 HD
        2011GMCSierra 2500 HD
        2011ChevroletSilverado 2500 HD
        2012GMCSierra 2500 HD
        2012ChevroletSilverado 2500 HD
        2013GMCSierra 2500 HD
        2013ChevroletSilverado 2500 HD
        2014GMCSierra 2500 HD
        2014ChevroletSilverado 2500 HD
        2015GMCSierra 2500 HD
        2015ChevroletSilverado 2500 HD
        2016GMCSierra 2500 HD
        2016ChevroletSilverado 2500 HD