Replaces OEM Part Numbers:
Blades: AYP/Husqvarna/Poulan 173920, 180054, 512258301, 532180054, 539107519, 575938201, 575938301, 917173920, 917532173920, 917532180054, 917539107519, 917577203106
Replaces OEM Part Numbers:
Spindles: AYP/Husqvarna 174356, 174358, 532174356, 532174358, 532192656, 539107515, 587125201
Replaces OEM Part Numbers:
Pulleys: AYP/Husqvarna 174375, 532174375, 532107521, 539107521
Compatible with: Z4818, CZ 4815, CZ4817 KOA, CZ4818 with 48-Inch Decks
Blade Length: 16 3/4 (16.75) inch; Width 2 1/2 (2.50) inch; Thickness: 0.197 inch
Belt Replaces OEM AYP/Husqvarna/Poulan 539107709: Length (Inches): 143-1/2", Width (Inches): 5/8"