Dayco 89338 Accessory Drive Belt Tensioner Assembly - Main Drive

Overview of Dayco Accessory Drive Belt Tensioner Assembly 89338

The Dayco 89338 accessory drive belt tensioner assembly is designed for reliable serpentine belt tensioning in select Chevrolet and Pontiac vehicles. Engineered for automatic operation, this tensioner supports smooth counterclockwise belt movement, ensuring consistent performance in Camaro, Firebird, and GTO models.

• Compatible with Chevrolet Camaro, Pontiac Firebird, and Pontiac GTO
• Serpentine belt type tensioner assembly
• Automatic tensioner with counterclockwise direction
• Single pulley design with 70mm diameter
• Pulley features 6 grooves and 27mm width
• Durable construction for consistent belt tension

Technical Details and Specifications

The Dayco 89338 tensioner assembly features a single pulley with a 70mm diameter and 27mm width, designed to accommodate serpentine belts with six grooves. The pulley is not flat, which helps maintain proper belt alignment and grip. This automatic tensioner operates in a counterclockwise direction, providing consistent tension to the accessory drive belt system. Its design supports the accessory drive belt system components in Chevrolet Camaro, Pontiac Firebird, and Pontiac GTO vehicles, ensuring optimal belt performance and longevity.

Applications and Problem Solving

This accessory drive belt tensioner assembly is used to maintain proper tension on the serpentine belt, which drives multiple engine accessories. It addresses common issues such as:

• Excessive belt slack causing slipping or noise
• Premature belt wear due to improper tension
• Accessory drive system misalignment
• Vibration and belt flutter during engine operation
• Failure of manual tensioners in older systems

Installation Notes and Tips

When installing the Dayco 89338 tensioner assembly, ensure the serpentine belt is routed correctly according to the vehicle’s belt diagram. The automatic tensioner should be installed with the pulley rotating counterclockwise to maintain proper belt tension. Verify pulley alignment and belt groove engagement to prevent premature wear. It is recommended to inspect the belt and related components for wear during installation and replace if necessary.

Quality Assurance and Warranty

Dayco manufactures the 89338 accessory drive belt tensioner assembly to meet or exceed OEM specifications for Chevrolet and Pontiac vehicles. The product undergoes rigorous quality control to ensure durability and reliable performance. Warranty coverage details are provided by Dayco and typically include protection against defects in materials and workmanship under normal use.