Husqvarna 574173003 Lawn Tractor Blade Drive Belt Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; RZ4619,966455801,966809001,RZ4620,917289880,965921501,RZ4219,RZ4219BF-966582201,966582201,965881101,965881201,965881301,RZ4219-966809001,RZ5422,965881401 Blade drive belt 574173003 turns the pulley that spins the blades on the mower deck Genuine Original Equipment Manufacturer (OEM) part. Compatible Brands: Husqvarna This blade drive belt (part number 574173003) is for lawn tractors Wear work gloves to protect your hands when installing this part