Litens 999528A Automatic Belt Tensioner

The Litens 999528A is an automatic serpentine belt tensioner engineered to maintain consistent belt tension throughout the accessory drive system. As the inventor of the automatic belt tensioner, Litens is recognized as the OEM-quality standard in tensioner technology, supplying original equipment to major automotive manufacturers worldwide.

This tensioner uses a spring-loaded pivoting arm and integrated damping mechanism to continuously adjust belt tension as load conditions change, helping prevent belt slippage, squealing, and premature belt wear. Proper belt tension is critical for reliable operation of engine accessories including the alternator, power steering pump, air conditioning compressor, and water pump.

Key Features:

• OEM-equivalent design and construction for direct-fit replacement
• Integrated damping mechanism for smooth, consistent tensioner arm movement
• High-strength housing built to withstand heat, vibration, and long-term engine bay conditions
• Precision-engineered spring calibration to match original equipment tension specifications
• Includes tensioner pulley bearing for a complete replacement
• Manufactured by Litens — the original inventor of the automatic serpentine belt tensioner

The Litens 999528A is a direct OEM-style replacement tensioner designed to restore proper accessory drive belt function and extend overall belt system life. It is recommended to replace the tensioner whenever the serpentine belt is replaced for best results.