Litens 999215A Serpentine Belt Drive Fix Kit with Tensioner and Grooved Idler

The Litens 999215A Serpentine Fix Kit is an engineered solution designed to permanently address chronic belt-throwing problems caused by front-end accessory drive system misalignment and water ingression. Litens, the world's largest Original Equipment supplier of accessory drive tensioners and pulleys, re-engineered the entire drive system to eliminate these persistent issues at the root cause.

How It Works:

Unlike the factory setup, this kit replaces smooth OE pulleys with precisely grooved components. The grooves on the double-sided serpentine belt interlock with the grooves on the tensioner pulley and routing idler, creating a mechanical lock that makes it virtually impossible for the belt to be thrown — even in rain, snow, or wet conditions.

Kit Includes:

• New belt tensioner with grooved pulley (replaces original smooth-pulley tensioner)
• New grooved routing idler (replaces original smooth idler)
• Double-sided serpentine belt designed to interlock with grooved pulleys
• All required hardware for installation
• Application-specific installation instructions

Key Features:

• Engineered by the world's largest OE supplier of serpentine belt tensioners
• Grooved pulley and idler system locks the belt in place, preventing belt ejection
• Addresses root causes of belt failure: drive misalignment and water ingression
• Meets or exceeds original equipment fit, form, and function
• Replacement idler and tensioner available separately from Litens
• Professional installation estimated at approximately 1 hour

The Litens 999215A Serpentine Fix Kit is the definitive, permanent fix for problematic accessory drive systems prone to belt-throwing — delivering OE-grade reliability with an improved, purpose-built design.