Dayco 89585 | Accessory Drive Belt Idler Pulley

Part Number
Accessory Drive Belt Idler Assembly

Fits: 91-95 Buick Park Avenue, 92-95 Oldsmobile 98, 92-95 Pontiac Bonneville, 95 Buick Riviera, 95 Oldsmobile 88

Special Price $32.29 Regular Price $37.99
Out of stock
Free Shipping
Dayco® No Slack® Idler/Tensioner Pulleys are manufactured with smoother surfaces and tighter dimensional tolerances that translates into less vibration and therefore longer belt life. The use of state-of-the-art 3-D computer aided design (CAD) and finite element analysis (FEA) guarantees the optimal design and maximum structural integrity for both plastic and steel pulleys. Lifetime lubricated ball bearings and double high temperature seals assure peak bearing performance, the most critical element of a pulley's service life.

BRAND: Dayco




Bearing Inner Diameter 117
Bearing Width12
Belt TypeSerpentine
Max Belt Width06 Rib
Number of Bearings1

Dual Pulley



  • 1992-1995 Pontiac Bonneville - Position: Supercharger
  • 1995-1995 Oldsmobile 88 - Position: Supercharger
  • 1992-1995 Oldsmobile 98 - Position: Supercharger
  • 1991-1995 Buick Park Avenue - Position: Supercharger
  • 1995-1995 Buick Riviera - Position: Supercharger
Customer Questions
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
Please, mind that only logged in users can submit questions

Compatible Vehicles

Copyright © 2013-present PartsHawk, LLC. All rights reserved.