Dorman 300-702 Vacuum Pump Pulley

Overview of Dorman Vacuum Pump Pulley 300-702

The Dorman 300-702 vacuum pump pulley is designed for reliable performance in emission control systems. Engineered from durable steel with a smooth pulley surface, this component is compatible with various Chevrolet and GMC models, including Blazer, Tahoe, Yukon, and multiple Suburban and Express series trucks.

• Constructed from high-quality steel (acero) for strength and durability
• Black finish housing for corrosion resistance and long service life
• Smooth pulley type designed for serpentine belt systems
• Outside diameter measures 4.91 inches with a width of 0.98 inches
• Standard replacement grade for direct fit and function
• Includes one vacuum pump pulley per package
• Compatible with Chevrolet and GMC trucks and SUVs such as C1500, C2500, K1500, Savana 2500, and more

Detailed Product Description

The Dorman 300-702 vacuum pump pulley is a standard replacement part crafted from steel to ensure durability under demanding engine conditions. Its black housing finish provides added protection against wear and environmental factors. Designed specifically for serpentine belt systems, the smooth pulley surface reduces belt wear and maintains consistent belt tension. With an outside diameter of 4.91 inches and a width of 0.98 inches, this pulley fits precisely on the vacuum pump assembly, ensuring optimal operation of the emission control vacuum system.

This part is compatible with a wide range of Chevrolet and GMC vehicles, including popular models like the Chevrolet Blazer, Tahoe, Yukon, and various C and K series trucks and Suburban variants. The Dorman 300-702 is engineered to meet OEM specifications, making it a reliable choice for maintaining proper vacuum pump function and emission control performance.

Common Applications and Issues Addressed

• Restores proper vacuum pump operation in emission control systems
• Eliminates belt slippage caused by worn or damaged pulleys
• Prevents vacuum leaks that can affect engine performance and emissions
• Replaces corroded or damaged pulleys to maintain system integrity
• Supports consistent serpentine belt routing and tension

Installation Notes and Tips

• Installation hardware and instructions are not included; refer to vehicle service manual for guidance
• Ensure the serpentine belt is properly aligned on the smooth pulley surface to avoid premature wear
• Inspect the vacuum pump and surrounding components for wear during installation
• Verify compatibility with your specific Chevrolet or GMC model before installation

Quality Assurance and Warranty

Dorman vacuum pump pulleys are manufactured to meet or exceed OEM standards for fit, form, and function. The 300-702 part number is a standard replacement grade component designed for dependable service life. While installation hardware and instructions are not included, the product undergoes quality checks to ensure consistent performance. Warranty coverage details should be confirmed through the original purchase source or Dorman's official warranty policy.