Dayco 89390 Accessory Drive Belt Tensioner Assembly

Overview of Dayco Accessory Drive Belt Tensioner Assembly 89390

The Dayco 89390 accessory drive belt tensioner assembly is designed for select Honda models, including the Accord, Accord Crosstour, Odyssey, and Pilot. This hydraulic tensioner supports serpentine belt systems, ensuring proper belt tension and smooth operation of engine accessories.

• Serpentine belt type compatibility
• Counter clockwise rotation direction
• Two pulleys with 80mm diameter each
• Both pulleys feature flat surfaces and 29mm width
• Hydraulic assembly design for consistent tension

Technical Details and Specifications

The Dayco 89390 tensioner assembly features a hydraulic design that maintains optimal tension on the serpentine belt, reducing belt slip and wear. It includes two pulleys, each with an 80mm diameter and 29mm width, both having flat surfaces to accommodate the belt profile. The tensioner rotates counter clockwise, matching the accessory drive system requirements of compatible Honda vehicles. This precise fitment ensures reliable performance in the Accord, Accord Crosstour, Odyssey, and Pilot models.

Compatible Honda Models and Applications

This accessory drive belt tensioner assembly is compatible with the following Honda vehicles:

• Honda Accord
• Honda Accord Crosstour
• Honda Odyssey
• Honda Pilot

It is specifically engineered to work with the serpentine belt systems in these models, providing proper tension and alignment for accessory components such as the alternator, power steering pump, and air conditioning compressor.

Common Issues Addressed by the Dayco 89390 Tensioner

• Eliminates belt slippage caused by improper tension
• Prevents premature belt wear and cracking
• Reduces noise from loose or misaligned belts
• Maintains consistent accessory drive performance
• Helps avoid engine overheating due to belt failure

Installation Notes and Tips

When installing the Dayco 89390 tensioner assembly, ensure the serpentine belt is properly routed according to the vehicle’s service manual. The counter clockwise rotation direction must be observed to avoid premature wear. Inspect pulleys for flatness and width compatibility with the belt. It is recommended to replace the belt tensioner assembly along with the serpentine belt to maintain optimal system performance.

Quality Assurance and Warranty Information

Dayco manufactures the 89390 accessory drive belt tensioner assembly to meet OEM specifications for Honda vehicles. The hydraulic design and precision pulleys are tested for durability and consistent performance. This part comes with a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for your Honda Accord, Accord Crosstour, Odyssey, or Pilot.