Dorman 300-140 Power Steering Pump Pulley

Overview of Dorman Power Steering Pump Pulley 300-140

The Dorman 300-140 power steering pump pulley is designed for reliable performance on Chevrolet S10 and GMC Sonoma models. Constructed from durable steel with a black finish, this pulley is engineered to meet standard replacement requirements for power steering systems.

• Material: Steel for strength and durability
• Color: Black finish for corrosion resistance
• Groove Quantity: 6 grooves compatible with serpentine belts
• Outside Diameter: 5.55 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
• Pulley Bore Diameter: 0.748 inches
• Item Grade: Standard replacement quality

Detailed Product Description

The Dorman 300-140 power steering pump pulley is specifically engineered for use with Chevrolet S10 and GMC Sonoma vehicles. Its steel construction ensures long-lasting durability under typical operating conditions. The black finish helps resist corrosion, maintaining the pulley’s integrity over time. Featuring six grooves, this pulley is compatible with serpentine belt systems commonly found in these models. The 5.55-inch outside diameter and 0.748-inch bore size provide a precise fit to the power steering pump shaft, ensuring smooth operation. Note that mounting hardware and installation instructions are not included with this part.

Compatible Vehicles and Applications

• Chevrolet S10 power steering pump pulley replacement
• GMC Sonoma power steering system maintenance
• Replacement for worn or damaged pulleys causing belt slippage
• Addressing noise or vibration issues related to pulley wear
• Restoring proper belt alignment and tension in power steering systems

Installation Notes and Tips

Installation of the Dorman 300-140 pulley requires removal of the old pulley from the power steering pump shaft. Since mounting hardware is not included, retain or source appropriate fasteners before beginning installation. Use proper tools to avoid damaging the pulley bore or pump shaft. Verify belt alignment and tension after installation to ensure optimal performance. Professional installation is recommended if unfamiliar with power steering system components.

Quality Assurance and Warranty

Dorman power steering pump pulleys are manufactured to meet standard replacement specifications, providing reliable performance for Chevrolet S10 and GMC Sonoma vehicles. This part undergoes quality checks to ensure dimensional accuracy and material integrity. Warranty coverage details should be confirmed through the original purchase source or Dorman’s official channels.