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        CP3 Conversion Kit With CP3 Pump 2011-2016 GM 2500/3500 Duramax LML Fleece Performance

        Convert your LML's fuel system from a CP4 to a CP3

        Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms.

        0.0
        Fleece Performance
        • Brand: Fleece Performance
        Vehicle Specific
        • $3638.60

        Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax platforms, resulting in costly repairs for owners when a CP4 fails. Our CP3 conversion kit lets you easily adapt a CP3 to your 2011-2016 Duramax.

        In conjunction with the piezoelectric injectors, a CP3K conversion is capable of supporting 600 and up rwhp and a PowerFlo 750 conversion is capable of supporting nearly 850 and up rwhp.

        Kit Contents:

        • High Pressure Fuel Rail Line
        • Fuel Rail Plug and Nut
        • CP3 Block Adapter with O-ring
        • (3) CP3 Block Adapter Bolts (Flange Head, M8x1.25x35mm)
        • CP3 Pump Fittings - 3/8 inch
        • CP3 Pump Fittings - 1/2 inch
        • (2) Sealing Washers
        • Low Pressure Fuel Feed Line
        • 3/8 inch x 8 inch Flexible Fuel Line with Hose Clamps (CP3 Return)
        • 1/2 inch x 30 inch Flexible Fuel Line with Hose Clamps (Filter to CP3)
        • 3/4 inch P-Clamp

        What LML CP3 Conversion Kit is right for you?

        We've got a number of choices when it comes to CP3 conversion kits, let us help you in the proper selection: 

        FPE-LML-CP3-NP: Our "No Pump" kit for the LML CP3 conversion gives you the option to select your own CP3 pump for your application.  Our kit provides you with all of the hardware you need to adapt a LBZ/LMM based Bosch CP3 to your 2011-2016 LML Duramax. 

        FPE-LML-CP3-WP: Our "With Pump" kit for the LML CP3 conversion gives you a brand new LBZ/LMM Bosch CP3 along with all of the hardware you need to convert your CP4 equipped Duramax to a CP3.  This kit is designed for use with or without a low pressure lift pump. For optimal performance, if the truck is equipped with a lift pump, the feed pressure to the CP3 should not exceed 11 psi when utilizing this kit.

        FPE-LML-CP3-10: Our Heavy Duty kit for the LML CP3 conversion features a brand new LBZ/LMM Bosch CP3 equipped with a Fleece Performance 10mm stroker cam along with all of the hardware you need to convert your CP4 equipped Duramax to a CP3.  This kit is designed for use with or without a low pressure lift pump. For optimal performance, if the truck is equipped with a lift pump, the feed pressure to the CP3 should not exceed 2 psi. Engine surging may be induced by the additional fuel pressure of a lift pump operating at pressures over 2 psi. If you are intending to combine this kit with a Fleece PowerFlo lift pump, contact us for a lower rate spring for your pump to accommodate operation with this kit. For higher lift pump pressures, FCA table values will require adjustment.

          • SKU
            FPE-LML-CP3-10-FQWW
          • Weight
            25 lbs
          • Barcode
            635909311522
          • Dimensions (L x W x H)
            16 x 16 x 12 in
          • Manufacturer Part #
            FPE-LML-CP3-10
        • Engine Year
          2011-2016
        • 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
          Kit
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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
        2011ChevroletSilverado 2500 HD
        2011ChevroletSilverado 3500 HD
        2011GMCSierra 2500 HD
        2011GMCSierra 3500 HD
        2012ChevroletSilverado 2500 HD
        2012ChevroletSilverado 3500 HD
        2012GMCSierra 2500 HD
        2012GMCSierra 3500 HD
        2013ChevroletSilverado 2500 HD
        2013ChevroletSilverado 3500 HD
        2013GMCSierra 2500 HD
        2013GMCSierra 3500 HD
        2014ChevroletSilverado 2500 HD
        2014ChevroletSilverado 3500 HD
        2014GMCSierra 2500 HD
        2014GMCSierra 3500 HD
        2015ChevroletSilverado 2500 HD
        2015ChevroletSilverado 3500 HD
        2015GMCSierra 2500 HD
        2015GMCSierra 3500 HD
        2016ChevroletSilverado 2500 HD
        2016ChevroletSilverado 3500 HD
        2016GMCSierra 2500 HD
        2016GMCSierra 3500 HD