This core is extremely rare and your core is required to fulfill this order. Contact us for instructions on sending your core in for Rebuild & Return.Due to core supply, some Discs may be 4 pads. Included w/ MD6503358U & MD6503645U Clutch Units.The MD16406 11" PTO Disc, 3 Pad, w/ 2" 24 Spline Hub - Reman fits equipment brands such as: Mahindra