Polaris 3900 Sport 39-120 Genuine Chain Tensioner Kit

This genuine chain tensioner kit, model 39-120, is specifically engineered to maintain optimal performance for Polaris 3900 Sport pressure-side pool cleaners. Designed as an exact replacement, it ensures the precise tension of the internal drive chain, which is critical for smooth operation and efficient cleaning cycles. Manufactured from high-quality materials, this kit restores the cleaner's original movement capabilities, helping to extend its service life and deliver consistent debris removal.

• Engineered for Polaris 3900 Sport Cleaner – Guarantees perfect fit and function for specific cleaner models.
• Genuine OEM Component – Ensures original factory quality and reliable operation.
• Restores Drive Chain Tension – Critical for smooth internal mechanism movement and efficient cleaning.
• Durable, High-Quality Construction – Made to match original parts, extending cleaner longevity.