Dorman 419-625 Accessory Drive Belt Idler Pulley

Reliable Accessory Drive Belt Idler Pulley for Nissan Vehicles

The Dorman 419-625 accessory drive belt idler pulley is engineered to maintain proper tension and routing of the serpentine belt in select Nissan models. Designed specifically for Nissan Altima, Frontier, Maxima, Murano, Quest, and Xterra, this steel pulley ensures consistent performance and durability.

• Constructed from durable steel with a black finish for corrosion resistance
• Measures 84 mm outside diameter and 25 mm width for precise fitment
• Inside diameter of 37 mm with a single mounting hole for secure installation
• Designed for serpentine belt systems with zero grooves on the pulley surface
• Includes one pulley bearing with a width of 12.2 mm for smooth operation
• Specific fit for Nissan models to ensure compatibility and optimal function

Detailed Product Description

The Dorman 419-625 idler pulley is a critical component in the accessory drive belt system, responsible for guiding and maintaining tension on the serpentine belt. Made from high-quality steel, this pulley offers strength and resistance to wear, helping to extend the life of your belt system. Its black coating provides additional protection against rust and environmental factors. The pulley’s dimensions—84 mm outside diameter, 25 mm width, and 37 mm inside diameter—are tailored to fit specific Nissan vehicles, including the Altima, Frontier, Maxima, Murano, Quest, and Xterra. The single mounting hole and smooth pulley surface (no grooves) are designed to work seamlessly with the serpentine belt type used in these models. The included bearing with a 12.2 mm width supports smooth rotation and reduces friction, contributing to quieter and more efficient engine operation.

Common Applications and Issues Addressed

• Restores proper serpentine belt tension and alignment
• Eliminates belt slippage and squealing noises
• Prevents premature belt wear caused by misaligned pulleys
• Replaces worn or damaged idler pulleys to maintain accessory drive system performance
• Helps avoid engine overheating by ensuring proper operation of belt-driven components

Installation Notes and Tips

• Verify compatibility with your Nissan model before installation
• Inspect the serpentine belt for wear and replace if necessary during pulley installation
• Use proper tools to remove and install the pulley to avoid damage
• Ensure the mounting hole aligns correctly and the pulley spins freely after installation
• Follow vehicle manufacturer torque specifications for mounting hardware

Quality Assurance and Warranty

Dorman manufactures the 419-625 idler pulley to meet or exceed OEM standards for fit, form, and function. The steel construction and precision bearing contribute to long service life under normal operating conditions. This part is backed by Dorman’s limited warranty, providing coverage against defects in material and workmanship. Always consult the warranty documentation for specific terms and conditions.