Dorman 300-131 Power Steering Pump Pulley

Overview of Dorman Power Steering Pump Pulley 300-131

The Dorman 300-131 power steering pump pulley is designed for reliable performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. Engineered with durable steel and a black finish, this pulley supports serpentine belt systems with a 5-groove design and a 5.5-inch outside diameter.

• Constructed from sturdy steel material for durability
• Black color finish for corrosion resistance
• Five grooves compatible with serpentine belts
• 5.5-inch outside diameter for precise fitment
• Single mounting hole for secure installation
• Standard replacement grade for dependable operation
• Includes pulley only; mounting hardware and instructions not included

Detailed Product Description

The Dorman 300-131 power steering pump pulley is a direct replacement part designed to restore proper function to the power steering system in compatible vehicles. Its steel construction ensures long-lasting strength, while the black finish helps resist wear and corrosion. The pulley features five grooves to accommodate serpentine belts, which are common in the power steering systems of Buick Cavalier, Chevrolet Corsica, Oldsmobile Cutlass Ciera, Pontiac Sunfire, and Chevrolet Century models. With an outside diameter of 5.5 inches and a bore size of 0.7472 inches, this pulley matches OEM specifications for a precise fit. The single mounting hole allows for straightforward attachment to the power steering pump shaft.

Compatible Vehicles and Applications

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

• Buick Century
• Chevrolet Cavalier
• Chevrolet Corsica
• Oldsmobile Cutlass Ciera
• Pontiac Sunfire

Use the Dorman 300-131 pulley to address issues related to power steering pump belt alignment and performance in these vehicles.

Common Issues Addressed by This Pulley

• Worn or damaged pulley grooves causing belt slippage
• Corroded or weakened pulley structure affecting steering response
• Misalignment of the power steering belt system
• Noise or vibration originating from a faulty pulley
• Replacement of a broken or seized pulley

Installation Notes and Tips

Installation of the Dorman 300-131 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 five grooves to maintain proper tension and function.

Quality Assurance and Warranty

This pulley is manufactured to meet standard replacement grade requirements, providing reliable performance consistent with OEM specifications. Dorman products typically come with a limited warranty covering defects in material and workmanship. For specific warranty details, refer to Dorman's official documentation or contact the manufacturer directly.