Must machine flywheel when converting from 12-5/8" to 13".Includes: PPA, R64759N (Transmission Disc) & Lever Wear Ring OEM #L42285The R64948N 12-7/8" Diaphragm Clutch Unit, w/ 1-3/4" 27 Spline PPA Hub & 1-1/4" 10 Spline Disc Hub - New fits equipment brands such as: John DeereThe R64948N is a substitute for the following discontinued products: R64948R