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.Includes: Pressure Plate Assembly, Captive Transmission Disc , & Flywheel DiscThe MA19631114000U 8-1/2" Dual Stage Clutch Unit - Reman fits equipment brands such as: Cub Cadet, MahindraThe MA19631114000U is a substitute for the following discontinued products: MA19631114000, MA19631115000, MA19631116000