Dorman 300-117 Power Steering Pump Pulley

Overview of Dorman Power Steering Pump Pulley 300-117

The Dorman 300-117 power steering pump pulley is designed for reliable performance in select Chevrolet and GMC vehicles. Constructed from durable steel and finished in black, this pulley is engineered to meet standard replacement requirements for power steering systems.

• Material: Steel construction for strength and durability
• Color: Black finish for corrosion resistance
• Groove Quantity: 6 grooves compatible with serpentine belts
• Outside Diameter: 5.3 inches for precise fitment
• Mounting Hole Quantity: Single mounting hole for secure installation
• Belt Type: Designed for serpentine belt systems
• Package Contents: Includes the pulley only, no mounting hardware or installation instructions
• Item Grade: Standard replacement quality
• Pulley Bore Diameter: 16.8 mm for proper shaft fit

Detailed Product Description

The Dorman 300-117 power steering pump pulley is specifically engineered to restore the function of the power steering pump in Chevrolet Astro, S10, S15, Safari, and GMC Sonoma models. Its steel construction ensures long-lasting durability under typical operating conditions. The black finish helps resist rust and wear, maintaining the pulley’s integrity over time. Featuring six grooves, this pulley is compatible with serpentine belt systems commonly found in these vehicles. The 5.3-inch outside diameter and 16.8 mm bore size provide a precise fit to the power steering pump shaft, ensuring smooth operation and proper belt alignment.

Compatible Vehicles and Applications

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

• Chevrolet Astro
• Chevrolet S10
• Chevrolet S15
• Chevrolet Safari
• GMC Sonoma

Use the Dorman 300-117 pulley when replacing worn or damaged pulleys in these specific vehicles to maintain proper power steering function.

Common Issues Addressed by This Pulley

• Worn or damaged pulley grooves causing belt slippage
• Corroded or rusted pulley surfaces affecting belt alignment
• Excessive pulley wobble or noise during operation
• Failure of the original pulley leading to power steering pump malfunction
• Replacement of pulleys incompatible with serpentine belt systems

Installation Notes and Tips

The Dorman 300-117 pulley does not include mounting hardware or installation instructions. It is recommended to use appropriate tools and follow vehicle-specific service manuals when installing this pulley. Ensure the serpentine belt is properly aligned on all pulleys to prevent premature wear. Verify the mounting hole and bore dimensions match the power steering pump shaft before installation.

Quality Assurance and Warranty

This power steering pump pulley is a standard replacement part manufactured to meet OEM specifications for fit and function. Dorman provides quality assurance through rigorous testing and manufacturing standards. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Consult product documentation or Dorman directly for warranty terms related to part number 300-117.