Dayco 89138 Accessory Drive Belt Idler Pulley - Air Conditioning, Alternator or Alternator and Air Conditioning

Reliable Accessory Drive Belt Idler Pulley for Chrysler, Dodge, Mitsubishi

The Dayco 89138 accessory drive belt idler pulley is engineered to maintain proper tension and routing of serpentine belts in select Chrysler, Dodge, and Mitsubishi vehicles. Designed with durable steel construction, this pulley supports smooth belt operation and helps prevent premature wear.

• Constructed from robust steel for long-lasting durability
• Compatible with serpentine belt systems up to 6 ribs wide
• Single bearing design with a 10.2 mm inner diameter and 28 mm bearing width
• Flat pulley surface suitable for specific accessory drive configurations
• Precision dimensions: 90 mm outer diameter, 31.2 mm pulley width

Detailed Product Description

The Dayco 89138 accessory drive belt idler pulley is designed to fit a range of Chrysler, Dodge, and Mitsubishi models including the Diamante, Eclipse, Endeavor, Galant, Mirage, Sebring, and Stratus. Its steel material ensures resistance to wear and deformation under high stress conditions. The pulley features a flat surface and supports serpentine belts with a maximum width of 6 ribs, making it suitable for modern accessory drive belt systems. The single bearing with a 10.2 mm inner diameter and 28 mm width provides smooth rotation and reduces friction, contributing to efficient belt operation and extended component life.

Common Applications and Issues Addressed

• Maintains proper tension and alignment of serpentine belts
• Prevents belt slippage and noise caused by worn or damaged pulleys
• Reduces risk of accessory drive system failure due to pulley wear
• Supports smooth operation of alternator, power steering, and air conditioning belts
• Replaces worn or damaged idler pulleys in specified Chrysler, Dodge, and Mitsubishi models

Installation Notes and Tips

Ensure the serpentine belt is properly routed before installing the Dayco 89138 idler pulley. Verify compatibility with your vehicle’s belt width and pulley configuration. Use appropriate tools to remove the old pulley and torque the new pulley to manufacturer specifications to avoid over-tightening or misalignment. Regular inspection of the pulley and belt system is recommended to maintain optimal performance.

Quality Assurance and Warranty

Dayco manufactures the 89138 idler pulley to meet OEM standards for fit, form, and function. The steel construction and precision bearing design contribute to reliable performance in demanding automotive environments. While specific warranty details are not provided, Dayco products typically come with a limited warranty against defects in materials and workmanship.