Dorman 904-809 Vacuum Pump

Reliable Vacuum Pump for Dodge D250, D350, W250, and W350

The Dorman 904-809 vacuum pump is designed specifically for emission control systems in Dodge D250, D350, W250, and W350 models. Engineered with a metal housing and gear drive system, this vacuum pump ensures consistent performance and durability for your vehicle's vacuum needs.

• Metal housing for enhanced durability and heat resistance
• Gear drive system for reliable vacuum pump operation
• Includes a relief valve to protect the system from overpressure
• Barbed vacuum pump connector for secure hose attachment
• Multiple inlet and outlet size options: 3/8 in, 1/2 in, 5/8 in, 3/4 in, and 1 in
• Package contains the complete pump assembly (pulley and gasket not included)

Technical Details and Construction

The Dorman 904-809 vacuum pump features a robust metal housing that withstands the demanding conditions of emission control systems. Its gear drive mechanism provides consistent vacuum pressure, essential for proper engine operation and emission regulation. The pump includes a relief valve to prevent damage from excessive pressure, enhancing system safety. The barbed connector design ensures a secure fit for vacuum lines, minimizing the risk of leaks. With multiple inlet and outlet size options, this pump accommodates various hose configurations commonly found in Dodge D250, D350, W250, and W350 trucks.

Compatible Applications and Common Issues Addressed

This vacuum pump is compatible with Dodge D250, D350, W250, and W350 models, making it a suitable replacement part for emission control vacuum systems in these vehicles.

• Restores vacuum pressure for brake boosters and emission control devices
• Resolves vacuum leaks caused by worn or damaged pumps
• Prevents engine performance issues related to faulty vacuum supply
• Helps maintain proper operation of emission control components
• Addresses relief valve failures that can lead to system overpressure

Installation Notes and Tips

When installing the Dorman 904-809 vacuum pump, ensure the correct inlet and outlet hose sizes are matched to the pump’s barbed connectors. Since the pulley and gasket are not included, reuse existing components if they are in good condition or source replacements separately. Verify the gear drive alignment during installation to avoid premature wear. Properly secure all vacuum lines to prevent leaks and confirm the relief valve is functioning correctly after installation.

Quality Assurance and Warranty Information

Dorman vacuum pumps are manufactured to meet or exceed OEM specifications, providing reliable performance for emission control systems. The 904-809 part is backed by Dorman’s quality standards, ensuring durability and fitment accuracy for Dodge D250, D350, W250, and W350 trucks. Please refer to Dorman’s warranty policy for specific coverage details.