Dayco 89504 Accessory Drive Belt Idler Pulley - Power Steering

Dayco 89504 Accessory Drive Belt Idler Pulley

Dayco 89504 is an accessory drive belt idler pulley built for serpentine belt systems. It uses a steel construction with a single bearing to support smooth belt routing and consistent tensioning in the accessory drive system.

Key Features

• Steel pulley construction for durability in engine-bay conditions
• Serpentine belt application for accessory drive belt systems
• Flat pulley design
• Single bearing design with 10.3 mm inner diameter and 22 mm bearing width
• Maximum belt width: 5-rib
• Direct fit for power steering applications on select Mitsubishi vehicles

Fitment Details

• Fits 2006-2012 Mitsubishi Eclipse, power steering
• Fits 2010-2011 Mitsubishi Endeavor, power steering
• Fits 2004-2008 Mitsubishi Endeavor, power steering
• Fits 2004-2009 Mitsubishi Galant, power steering

Product Overview

This Dayco accessory drive belt idler pulley is intended for select Mitsubishi power steering belt routing applications, including Mitsubishi Eclipse, Mitsubishi Endeavor, and Mitsubishi Galant models. The steel pulley body and single-bearing layout support stable belt tracking in serpentine drive systems, helping maintain proper accessory drive operation. Dayco 89504 also cross-references Mitsubishi MD374878 for the same application.

Common Issues This Part Can Address

• Noise from a worn or rough idler pulley bearing
• Belt tracking problems in the accessory drive system
• Visible pulley wear on the serpentine belt path
• Power steering belt routing concerns on listed Mitsubishi models
• Reduced belt stability caused by pulley surface wear

Installation Notes and Tips

Verify belt routing and pulley alignment before installation. Inspect the serpentine belt, adjacent pulleys, and tensioner condition at the same time so the new idler pulley is not installed into a worn system. Confirm vehicle fitment by year, model, and power steering application before ordering.

Quality Assurance

Dayco is a recognized name in accessory drive components, and this pulley is built to match the listed OE-style application requirements for the specified Mitsubishi vehicles.