Dayco 89935 Accessory Drive Belt Tensioner Assembly - Accessory Drive, Fan or Fan and Water Pump

Dayco 89935 Accessory Drive Belt Tensioner Assembly

The Dayco 89935 accessory drive belt tensioner assembly is an automatic serpentine belt tensioner built for accessory drive belt system service. It uses a single 74 mm pulley with a flat pulley face and counter clockwise rotation to maintain proper belt tension in the drive system.

Key Features

• Automatic accessory drive belt tensioner assembly
• Serpentine belt application
• Counter clockwise rotation
• Single pulley design
• 74 mm pulley diameter
• 46.3 mm pulley width
• Flat pulley surface for belt tracking

Detailed Description

Dayco 89935 is an automatic serpentine belt tensioner assembly for accessory drive belt system repair. The unit is specified with one pulley, a 74 mm pulley diameter, and a 46.3 mm pulley width, giving it the dimensions needed for proper belt routing and contact in the accessory drive system. For buyers searching Dayco 89935, Dayco 89935 tensioner assembly, or a serpentine belt tensioner for Honda Civic applications, this part provides a direct replacement-style solution for the belt drive system.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Belt squeal caused by weak or inconsistent tension
• Serpentine belt flutter or vibration
• Improper belt tracking across the accessory drive system
• Noise from a worn tensioner pulley
• Loss of belt tension in the drive belt system

Installation Notes and Tips

Verify pulley diameter, width, and rotation direction before installation. Confirm the belt follows the correct routing path and inspect the serpentine belt, idler pulleys, and related accessory drive components at the same time. Use the vehicle service procedure for torque and alignment checks during replacement.

Quality Assurance

Dayco is a recognized name in belt drive system components, and this tensioner assembly is built to match the listed mechanical specifications for the application.