Water Pump, Rebuilt, V-12 E-Type From Engine 7S.7785. $350.00 Core Charge. NOTE: Most likely we will need your core to rebuild; please contact our sales department via phone to arrange having your pump rebuilt. For a new version of this pump, see part number CO-34549. 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.