Dorman 904-831 Vacuum Pump

Reliable Vacuum Pump for Audi and Volkswagen Models

The Dorman 904-831 vacuum pump is engineered to support the emission control system in select Audi and Volkswagen vehicles. Designed with durable aluminum housing and a gear drive system, this vacuum pump ensures consistent performance for models like the Audi A3 and Volkswagen Golf.

• Aluminum housing for lightweight durability
• Includes gasket for secure sealing
• Equipped with a relief valve for pressure regulation
• Gear-driven vacuum pump drive system
• Barbed vacuum pump connector with 0.273 inch inlet diameter

Product Details and Specifications

The Dorman 904-831 vacuum pump features a gear drive system that provides reliable vacuum generation essential for emission control and brake booster functions. Its aluminum housing offers corrosion resistance and strength while maintaining a lightweight profile. The included gasket ensures a proper seal during installation, preventing vacuum leaks. The pump’s barbed connector and 0.273 inch inlet diameter are designed to fit specific vacuum lines securely. Additionally, the integrated relief valve helps maintain optimal pressure levels within the system.

Compatible Vehicles and Applications

This vacuum pump is compatible with various Audi and Volkswagen models, including:

• Audi A3
• Volkswagen Beetle
• Volkswagen Golf
• Volkswagen Polo
• Volkswagen S3

It is primarily used in emission control systems and vacuum-assisted components, helping to address issues such as:

• Loss of vacuum pressure affecting brake booster performance
• Emission control system malfunctions due to vacuum leaks
• Engine performance problems related to vacuum pump failure
• Unstable vacuum supply causing sensor errors

Installation Notes and Tips

When installing the Dorman 904-831 vacuum pump, ensure the gasket is properly seated to prevent leaks. The pump does not include mounting hardware or a pulley, so reuse existing components or source separately if needed. Verify the barbed connector fits securely with the vacuum lines, and confirm the inlet diameter matches the vehicle’s specifications. Proper alignment of the gear drive system is critical for optimal operation.

Quality Assurance and Warranty

Dorman vacuum pumps are manufactured to meet or exceed OEM standards, using quality materials such as aluminum for durability. The 904-831 part number undergoes rigorous testing to ensure reliable performance in emission control applications. This product includes a gasket for installation and features a relief valve to protect the system. Warranty details are provided by Dorman and typically cover defects in materials and workmanship.