HomeBelts and Cooling > Accessory Drive Belt System ComponentsDayco 89573 Accessory Drive Belt Idler Pulley - Power Steering
Part #: 89573

Dayco 89573 Accessory Drive Belt Idler Pulley - Power Steering

Power Steering
⚙️ 10 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Mitsubishi, 3000GT and Diamante
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Durable Accessory Drive Belt Idler Pulley for Mitsubishi Vehicles

The Dayco 89573 accessory drive belt idler pulley is engineered to provide reliable performance for Mitsubishi 3000GT and Diamante models. Constructed from steel, this pulley is designed to maintain proper tension and alignment of serpentine belts, ensuring smooth engine operation.

  • Material: High-strength steel construction for durability
  • Groove Quantity: 4 grooves to accommodate serpentine belts
  • Belt Type: Compatible with serpentine belt systems
  • Bearing Inner Diameter: 17 mm for precise fitment
  • Bearing Width: 12 mm for stable rotation
  • Maximum Belt Width: Supports 4-rib belts
  • Number of Bearings: Single bearing design for efficient performance

Technical Details and Specifications

The Dayco 89573 idler pulley features a 4-groove design suitable for serpentine belt systems commonly found in Mitsubishi 3000GT and Diamante vehicles. Its steel material ensures resistance to wear and heat, contributing to longer service life. The pulley’s bearing has an inner diameter of 17 mm and a width of 12 mm, providing smooth and reliable rotation under engine load. Designed to support belts up to 4 ribs wide, this component helps maintain optimal belt tension and alignment, reducing the risk of belt slippage or premature wear.

Compatible Mitsubishi Models and Applications

This accessory drive belt idler pulley is compatible with the following Mitsubishi vehicles:

  • Mitsubishi 3000GT
  • Mitsubishi Diamante

It is specifically designed to work with the serpentine belt systems in these models, ensuring proper fit and function.

Common Issues Addressed by the Dayco 89573 Idler Pulley

  • Eliminates belt misalignment and slipping
  • Reduces noise caused by worn or damaged pulleys
  • Prevents premature belt wear due to improper tension
  • Maintains smooth accessory drive system operation
  • Helps avoid engine overheating caused by belt failure

Installation Notes and Tips

When installing the Dayco 89573 idler pulley, ensure the serpentine belt is properly routed according to the vehicle’s service manual. Verify that the bearing rotates smoothly without resistance or noise before final assembly. Use appropriate tools to avoid damaging the pulley or belt during installation. Regular inspection of the pulley and belt system is recommended to maintain optimal performance.

Quality Assurance and Warranty Information

Dayco manufactures the 89573 idler pulley to meet OEM specifications for fit, form, and function. The steel construction and precision bearing design contribute to reliable operation under normal driving conditions. While specific warranty details are not provided, Dayco products typically come with manufacturer-backed quality assurance to support durability and performance.

BrandDayco
Part Number89573
MaterialSteel
106870
Groove Quantity4
25617.3
Belt TypeSerpentine
Bearing Inner Diameter 117
Bearing Width12
FlatN
Max Belt Width04 rib
Number of Bearings1

This part fits 10 vehicles. Search below:

YearMakeModelPositionNotes
1999Mitsubishi3000GTPower Steering
1998Mitsubishi3000GTPower Steering
1997Mitsubishi3000GTPower Steering
1996Mitsubishi3000GTPower Steering
1995Mitsubishi3000GTPower Steering
1994Mitsubishi3000GTPower Steering
1994MitsubishiDiamantePower Steering
1993Mitsubishi3000GTPower Steering
1993MitsubishiDiamantePower Steering
1992Mitsubishi3000GTPower Steering

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.