4000 SERIES; 15 1/2" FLAT FLYWHEEL WITH 10" CENTER, 10 MOUNTING HOLES, 1 DOWEL HOLE & 160 TOOTH RING GEAR; HAS AREA FOR OIL SEAL ON BACK SIDE; PILOT BEARING TP836206 OEM #: A4600300305 RING GEAR: 160 TEETH CLUTCH SIZE: 15 1/2" CENTER DIAMETER: 10"