Dorman 300-877 Alternator Pulley

Reliable Alternator Pulley for Audi and Volkswagen Vehicles

The Dorman 300-877 alternator pulley is designed to provide consistent performance for select Audi and Volkswagen models. Engineered with a bolt-on attachment and a durable steel contact surface, this serpentine pulley ensures smooth operation in your vehicle's charging system.

Key Features of the Dorman 300-877 Alternator Pulley

• Finish: Black coating for corrosion resistance
• Attachment Type: Bolt-on for secure installation
• Outside Diameter: 2.4 inches, compatible with specified alternators
• Type: Serpentine pulley designed for serpentine belt systems
• Contact Surface Material: Steel for durability and wear resistance
• Bore Size: 0.67 inches to fit designated alternator shafts
• Flanged End: No flange, suitable for specific pulley configurations
• Installation Hardware: Not included, use existing or appropriate hardware
• Package Contents: One alternator pulley

Detailed Product Description

The Dorman 300-877 alternator pulley is engineered to meet the specifications required by Audi Passat, Volkswagen Q7, and Volkswagen Touareg models. Its serpentine design supports the efficient transfer of power from the engine to the alternator, maintaining proper belt tension and alignment. The bolt-on attachment type simplifies installation while ensuring a secure fit. Constructed with a steel contact surface and finished in black, this pulley offers resistance to wear and corrosion, contributing to the longevity of your vehicle's charging system.

Common Applications and Issues Addressed

• Replacement for worn or damaged alternator pulleys in Audi Passat and Volkswagen Q7 and Touareg
• Resolves belt slippage caused by pulley wear
• Eliminates noise or vibration from misaligned or faulty pulleys
• Prevents premature belt wear due to improper pulley diameter or surface
• Restores proper alternator function by ensuring correct pulley operation

Installation Notes and Tips

• Ensure the alternator shaft matches the 0.67-inch bore size before installation
• Use appropriate tools to remove the old pulley and install the new bolt-on pulley securely
• Check belt alignment and tension after installation to avoid premature wear
• Installation hardware is not included; retain or source compatible bolts as needed
• Consult vehicle service manual for torque specifications and detailed procedures

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 300-877 alternator pulley undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to Dorman’s official warranty policy for complete information.