ACDelco 39077 Professional Belt Drive Tensioner Assembly

The ACDelco 39077 Professional Belt Drive Tensioner is a premium replacement component designed to maintain proper tension on your vehicle's serpentine belt system. This tensioner assembly ensures optimal belt performance by automatically adjusting tension as the belt stretches over time, preventing slippage and reducing wear on belt-driven accessories.

Key Features:

• OE-quality construction provides performance equal to or exceeding original equipment specifications
• Engineered for direct-fit installation with no modifications required
• Pre-assembled unit includes tensioner pulley for complete replacement
• Spring-loaded mechanism maintains consistent belt tension throughout service life
• High-quality bearing assembly ensures smooth operation and extended durability
• Helps prevent premature belt failure and accessory damage

ACDelco Professional tensioners are manufactured to strict quality standards, making them an excellent choice for professional technicians and DIY mechanics seeking reliable, long-lasting performance. This tensioner helps ensure your alternator, water pump, power steering pump, and other belt-driven components receive proper power delivery.