Dorman 419-624 Accessory Drive Belt Idler Pulley

Reliable Accessory Drive Belt Idler Pulley for Nissan and Infiniti

The Dorman 419-624 accessory drive belt idler pulley is engineered to maintain proper tension and routing of the serpentine belt in select Nissan and Infiniti vehicles. Designed with durable steel construction and a precise fit, this idler pulley supports smooth engine operation and belt longevity.

• Constructed from robust steel material for durability
• Black finish with an outside diameter of 84 mm and width of 25 mm
• Single mounting hole and one pulley bearing with 12 mm width
• Specifically designed for serpentine belt systems
• Compatible with Nissan Altima, I30, I35, Maxima, Murano, and Quest models

Detailed Product Description and Specifications

The Dorman 419-624 idler pulley features a steel body finished in black, providing strength and resistance to wear. It has an outside diameter of 84 mm and a width of 25 mm, with an inside diameter of 17 mm to accommodate the mounting hardware. This pulley includes one mounting hole and a single bearing with a 12 mm width, ensuring smooth rotation and reliable belt tension. Designed specifically for serpentine belt systems, it does not have grooves, which aligns with the belt type requirements of the compatible vehicles. This idler pulley is a direct replacement part tailored for Nissan and Infiniti models such as the Altima, I30, I35, Maxima, Murano, and Quest, ensuring proper fit and function.

Common Applications and Problem Resolution

• 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 engine accessory performance
• Addresses pulley bearing failure that can cause belt system issues

Installation Notes and Tips

When installing the Dorman 419-624 idler pulley, ensure the serpentine belt is properly routed according to the vehicle’s belt diagram. Use appropriate tools to remove the old pulley and avoid damaging the mounting surface. Verify the pulley bearing spins freely before installation. Torque the mounting bolt to manufacturer specifications to prevent loosening during operation. It is recommended to inspect the serpentine belt and other pulleys during replacement to maintain overall system reliability.

Quality Assurance and Warranty Information

Dorman manufactures this 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 for a specified period. Refer to Dorman’s warranty policy for detailed terms and conditions.