Dayco 89120 Accessory Drive Belt Tensioner Pulley

Dayco 89120 Accessory Drive Belt Tensioner Pulley

Dayco 89120 is an accessory drive belt tensioner pulley built for serpentine belt systems. It uses a steel construction with a single bearing, 6-groove design, and a 06 rib maximum belt width to support proper belt tracking in the accessory drive system.

Key Features

• Steel pulley construction for accessory drive belt service
• 6-groove profile for serpentine belt applications
• Single bearing design with 17 mm inner diameter and 14 mm bearing width
• Supports up to 06 rib belt width
• Accessory drive belt tensioner pulley for OE-style replacement service
• Dayco 89120 for targeted belt system repair

Product Details

This Dayco accessory drive belt tensioner pulley is specified for serpentine belt systems and is built with a steel pulley body for consistent belt contact. The 6-groove configuration matches common multi-rib accessory drive layouts, while the single bearing design helps maintain smooth pulley rotation in the belt path. Dayco 89120 is a practical replacement choice when servicing the belt tensioner assembly on vehicles that use a 6-rib serpentine setup.

Compatible With applications that use a 6-groove serpentine accessory drive belt tensioner pulley. For fitment-based searches, Dayco 89120 is commonly referenced when replacing an accessory drive belt tensioner pulley on vehicles with serpentine belt routing and a 06 rib belt width requirement. If you are searching by part number, Dayco 89120 is the identifier to match.

Common Repair Symptoms

• Belt noise from the accessory drive system
• Uneven belt tracking across the pulley surface
• Worn or rough pulley rotation during inspection
• Serpentine belt service on a 6-rib drive system
• Tensioner pulley replacement during belt maintenance

Installation Notes

Verify pulley groove count, belt width, and bearing dimensions before installation. Confirm the serpentine belt routing and inspect the tensioner assembly, belt condition, and adjacent accessory pulleys at the same time. Use the vehicle’s service information to match the correct accessory drive belt tensioner pulley for the application.

Quality Assurance

Dayco is a recognized name in belt drive components, and this pulley follows the dimensional and material specifications listed for the part. Confirm the application by part number 89120 and compare the pulley’s 6-groove, steel, single-bearing construction to the original component before installation.