Water Pump, Rebuilt, all XK-140, all XK-150, 3.4-Liter MK I, MK VII from Engine B.2917, all MK VIII, MK IX Engine NC.1001 to NC.7000. Includes Gasket. $250 Core Charge. Illustration item 8. If you have a later MK IX with a pump labeled C14944, order new pump number CO-15694 or rebuilt pump 09-C14944. This is a rebuilt part with a core charge. For more on core charges and our rebuilt parts policies, click the Documents tab and double click on Core Information Sheet 8 10 2015.