Dorman 419-708 Accessory Drive Belt Idler Pulley - Air Conditioning

Overview of Dorman 419-708 Accessory Drive Belt Idler Pulley

The Dorman 419-708 accessory drive belt idler pulley is engineered specifically for Nissan 350Z and Pathfinder models. Constructed from durable steel with a black finish, this idler pulley is designed to maintain proper tension and alignment of the serpentine belt system, ensuring reliable engine performance.

• Material: Steel construction for strength and durability
• Color: Black finish for corrosion resistance
• Inside Diameter: 12 mm
• Outside Diameter: 84 mm
• Width: 20 mm
• Groove Quantity: 0 (smooth surface)
• Mounting Hole Quantity: 1 with 12 mm diameter
• Belt Type Compatibility: Serpentine belts
• Material Thickness: 3 mm
• Includes 1 pulley bearing with 12 mm width
• Specific fit for Nissan 350Z and Pathfinder

Detailed Product Description

The Dorman 419-708 idler pulley is a critical component in the accessory drive belt system of Nissan 350Z and Pathfinder vehicles. Its steel construction provides the necessary rigidity and wear resistance to support the serpentine belt, which drives multiple engine accessories. The pulley features a smooth surface with no grooves, designed to work seamlessly with serpentine belts. The single mounting hole with a 12 mm diameter ensures secure installation, while the included bearing supports smooth rotation and reduces friction. With a 20 mm width and 84 mm outside diameter, this pulley fits precisely within the belt routing system of the specified Nissan models.

Common Applications and Issues Addressed

• Prevents belt slippage and misalignment in the accessory drive system
• Reduces noise caused by worn or damaged pulleys
• Eliminates excessive belt wear due to improper tension
• Replaces seized or damaged idler pulleys to restore proper belt function
• Helps maintain optimal performance of engine accessories such as alternator, power steering pump, and air conditioning compressor

Installation Notes and Tips

• Ensure the serpentine belt is properly routed before installing the idler pulley
• Verify the mounting hole diameter matches the vehicle’s specifications (12 mm)
• Use appropriate tools to avoid damaging the pulley or bearing during installation
• Check belt tension after installation to confirm proper alignment and function
• Mounting hardware is not included; reuse existing hardware or source compatible fasteners

Quality Assurance and Warranty

Dorman manufactures the 419-708 idler pulley to meet or exceed OEM standards for fit, form, and function. The steel material and precision bearing ensure durability and reliable operation under normal driving conditions. While mounting hardware is not included, the pulley is designed for a specific fit on Nissan 350Z and Pathfinder models, reducing the risk of installation issues. Warranty coverage details should be confirmed with the product documentation or supplier.