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["High Pressure Fuel 2011-2015 Duramax 6.6L LML","High Pressure Fuel 2015.5-2016 Duramax 6.6L LML"]
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Fleece Performance Engineering
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Why convert your LML's Fuel System from a CP4 to a CP3
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+ rwhp and a PowerFlo 750 conversion is capable of supporting nearly 850+ rwhp.
Kit Contents:
CP3 Block Adapter with O-ring
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