New Mounting Bolt Dimension: 3/8UNC x 2-3/4". Used w/ R39099 or R36133 Discs.The R39590N 12-5/8" Diaphragm Pressure Plate, w/ 1-3/4" 27 Spline Hub - New fits equipment brands such as: John Deere
12-7/8" Diaphragm Clutch Unit, w/ 1-3/4" 27 Spline Hub - NewIncludes: PPA, Transmission Disc & Lever Wear Ring OEM #L42285The R67173N 12-7/8" Diaphragm Clutch Unit, w/ 1-3/4" 27 Spline Hub - New fits equipment brands such as: John DeereThe R67173N is a substitute for the following discontinued products: R67173