Husqvarna 574173002 Lawn Tractor Blade Drive Belt Genuine Original Equipment Manufacturer (OEM) Part This part is compatible with models including; 966042901,RZ3016 (966042901) Blade drive belt 574173002 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 574173002) is for lawn tractors Wear work gloves to protect your hands when installing this part