This is one brand new replacement 54/64 series 1 pump or motor 23 spline shaft will fit 5421,5431,6421,6431 pumps and motors WE ALSO HAVE BEARING PLATES, VALVE PLATES,SLIPPER RETAINERS, BALL GUIDES, SHAFT SEALS, AND PUMP AND MOTOR SEAL KITS. MANUFACTURERS NAMES AND DESCRIPTIONS ARE FOR REFERENCE PURPOSES ONLY. IT IS NOT IMPLIED THAT ANY PART IS THE PRODUCT OF THE ORIGINAL MANUFACTURER. PLEASE VISIT OUR STORE FOR OTHER ITEMS WE HAVE AVAILABLE!! Powered by Turbo Lister ************* International Buyers – Please Note: ************************ Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. OUR PARTS SHOULD INTERCHANGE WITH MOST MAJOR MANUFACTURERS. YOU MAY SEE REBUILT OR AFTERMARKET PUMPS OR MOTORS WITH THE FOLLOWING TAGS OR BRAND NAMES : FLINT, FHI, BERENDSEN, SUNSOURCE, EIP, EUROPEAN INDUSTRIAL, SAUER, SUNDSTRAND, DANFOSS, EATON, MIXER TRUCK PARTS, AND MANY MORE. PLEASE CONTACT US IF YOU HAVE QUESTIONS OR CONCERNS. WE WILL BE MORE THAN HAPPY TO HELP YOU!