Shaft splined blade pulley for lawn tractor mower with 12 internal teeth compatible AYP HUSQVARNA 30-329 FOR MODELS: RZ19CE, RZ4216, RZ4216CA, RZ4219, YT1942, YT1942T, YT16542, YTH2042, YTH20K46 Outer diameter: 158.8 mm Inner diameter: 15.8 mm Height: 22.2 mm Part number: 30-329 Original part number reference: 195945, 197473, 532195945 532197473 AYP, HUSQVARNA vr