The Husqvarna 532139573 Lawn Tractor Mower Primary V-Belt is a replacement drive belt designed to transfer engine power efficiently to the mower’s drive system on compatible lawn tractors. It works by connecting the engine pulley to the driven components, enabling smooth power transmission for consistent operation during mowing. Replacing a worn, cracked, or stretched V-belt helps res... https://www.wholetoolbox.com/husqvarna-532139573-lawn-tractor-mower-primary-v-belt