CP Pistons GM Duramax 6.6L 4.075 Bore 3.8976 Stk 6.418 Rod 1.946 CH -38.5cc Dome Pistons (Set of 8)

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Paying for expedited shipping methods only affects the time frame once the package is in the hands of the carrier. Paying for these methods does not and can not affect actual product availability or turn around times.