UC27888 GX25978 Extension Spring for John Deere Ztrak Mowers 2-Pack | Fits Z315E Z320M Z320R Z335E Z345M Z345R Lawn Mower

UC27888 Drive Belt Extension Spring

• Precise Compatibility — High-quality replacement extension spring compatible with John Deere UC27888 and GX25978; specifically designed for Z300 Series Zero-Turn Mowers including Z315E, Z335E, Z345M, Z355R, and Z375R models to ensure a perfect fit
• Superior Heavy-Duty Build — Crafted from high-grade carbon spring steel with a premium corrosion-resistant finish, this drive belt spring is engineered to withstand extreme engine temperatures and high-pressure tension without snapping or losing elasticity over time
• Optimized Deck Performance — Restores proper tension to your mower's drive belt, effectively eliminating loose fit problems and preventing belt slippage; maintains consistent blade rotation speed for a clean, professional-looking cut across your entire lawn
• Enhanced Mechanical Stability — Engineered to absorb high-impact torque and minimize belt vibration, this tension spring protects your mower's drive pulley and belt system from excessive friction and premature wear, ensuring long-term mechanical reliability for your outdoor power equipment
• Easy DIY Installation — A direct-fit replacement that allows you to quickly restore your lawn equipment's functionality; the simple hook-and-lock design enables fast, tool-free maintenance, helping you get your mower back on the grass in minutes