Dorman 300-552 Power Steering Pump Pulley

Overview of the Dorman Power Steering Pump Pulley 300-552

The Dorman 300-552 power steering pump pulley is designed for reliable performance in select Nissan and INFINITI vehicles. Engineered from durable steel and finished in black, this pulley supports the serpentine belt system to maintain smooth steering operation.

• Constructed from sturdy steel material for durability
• Black finish for corrosion resistance
• Four-groove design compatible with serpentine belts
• Outside diameter measures 4.41 inches
• Single mounting hole with a 12.1 mm pulley bore
• Standard replacement grade for dependable function
• Includes pulley only; mounting hardware and installation instructions not included

Detailed Product Description

The Dorman 300-552 power steering pump pulley is a direct replacement part engineered to meet OEM specifications for Nissan and INFINITI models such as the Altima, I30, I35, Maxima, Murano, and Quest. Its steel construction ensures long-lasting strength and resistance to wear, while the black coating helps protect against rust and environmental damage. The pulley features four grooves designed specifically for serpentine belt systems, providing consistent belt alignment and tension. With an outside diameter of 4.41 inches and a 12.1 mm bore, this pulley fits securely on the power steering pump shaft using a single mounting hole. This standard replacement part is ideal for restoring proper steering pump function and maintaining vehicle safety.

Compatible Vehicles and Applications

This power steering pump pulley is compatible with the following makes and models:

• Nissan Altima
• Nissan I30
• Nissan I35
• Nissan Maxima
• Nissan Murano
• Nissan Quest
• INFINITI models corresponding to the above Nissan platforms

Common Issues Addressed by This Pulley

• Worn or damaged pulley causing belt slippage
• Corroded pulley leading to steering pump inefficiency
• Misaligned pulley grooves affecting serpentine belt tracking
• Noise or vibration from a failing power steering pump pulley
• Replacement of a broken or cracked pulley to restore steering performance

Installation Notes and Tips

Installation of the Dorman 300-552 power steering pump pulley requires removal of the old pulley and proper alignment on the power steering pump shaft. Note that mounting hardware and installation instructions are not included, so having the appropriate tools and reference to a vehicle-specific repair manual is recommended. Ensure the serpentine belt is correctly routed over the four grooves to maintain proper tension and avoid premature belt wear.

Quality Assurance and Warranty

Dorman manufactures this power steering pump pulley to meet standard replacement quality, ensuring reliable fit and function. While mounting hardware and instructions are not provided, the part is engineered to OEM specifications for the listed Nissan and INFINITI models. Warranty coverage details should be confirmed through the point of purchase or Dorman directly.