StayCoolPumps Impeller Kit Replaces Sherwood 27000K-SHW Cummins 3974456 New Impeller Kit Includes Impeller and O-ring Fits Pumps: P2701-01 P2710X P2702-01 P2703-01 P2704-01 P2705-01 P2706-01 P2708-01 P2708X P2709-01 P2710-01 SMX Pumps: SMX 1730 , SMX QSB , SMX 17XX , Cummins QSB's SMX Super 27