Premium spring crafted from high-quality metal for exceptional durability and resistance to fatigue, maintaining critical belt tension under demanding mower deck operation. Direct fit replacement spring for Husqvarna deck spring part numbers 539120920 & 596989801, ensuring correct belt tension for optimal power transfer. Wide compatibility with popular models and brands, designed for Husqvarna zero-turn mowers and interchanges with Craftsman, Sears, and other major brand tractors. Engineered for straightforward installation, recommended to use a standard spring puller tool for safe removal and installation. Quickly restore mower cutting deck functionality after spring replacement or belt maintenance. This premium replacement spring is designed to provide long-lasting strength and tension for your mower deck. It ensures optimal power transfer, preventing issues like belt slipping and improper blade engagement. With its wide compatibility, it fits various popular models, making it a versatile choice for your lawn care needs. The straightforward installation process allows you to get your mower back in working order quickly, ensuring efficient lawn maintenance. Color: As Shown Material: Metal Package Contents: Package includes 1 x Deck Belt Spring