Dorman 904-809 Vacuum Pump
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Dorman

Dorman 904-809 Vacuum Pump

Brand Dorman 904-809
Gasket Or Seal Included No
Housing Material Metal
Package Contents Pump Assembly
Pulley Included No
Relief Valve Yes
Vacuum Pump Connector Barbed
Vacuum Pump Drive System Gear Drive
Vacuum Pump Inlet 3/8 in; 1/2 in; 5/8 in; 3/4 in; 1 in
Vacuum Pump Outlet 3/8 in; 1/2 in; 5/8 in; 3/4 in; 1 in
Fits Dodge · 12 vehicles

OE direct replacement. Matches the fit and function of the original equipment pump.

Metal housing. Durable construction for reliable service.

Gear-driven design. Built to keep vacuum-operated functions working properly.

Cross-references Cardone Reman 64-1300 and 4429103 for the same application. See all 2.

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Dorman 904-809 Vacuum Pump for Dodge Trucks

Dorman 904-809 is a direct replacement vacuum pump built to match the fit and function of the original equipment unit. It uses a metal housing and gear-drive design to support vacuum-operated vehicle functions on select Dodge D250, D350, W250, and W350 trucks from 1989-1991.

Key Features

  • Direct replacement vacuum pump for OE-style fit and function
  • Metal housing for durable service
  • Gear-drive vacuum pump design
  • Barbed connector style
  • Relief valve included
  • Inlet and outlet sizes: 3/8 in, 1/2 in, 5/8 in, 3/4 in, and 1 in
  • Package contents: pump assembly

Detailed Description

This Dorman vacuum pump is built for mechanically driven applications and is intended to restore vacuum supply for systems that rely on engine vacuum. It is a practical replacement for Dodge D250 and Dodge W350 vacuum pump service, as well as D350 and W250 models in the same 1989-1991 range. The part number 904-809 is also a useful reference when sourcing the correct replacement for these trucks.

This part cross-references Cardone Reman 64-1300 for the same application.

What It Helps Fix

  • Low or inconsistent vacuum supply to vehicle systems
  • Vacuum-related drivability or accessory operation issues
  • Failure of the original mechanically driven pump
  • Loss of vacuum support in older Dodge truck applications

Installation Notes and Tips

  • Fits 1989-1991 Dodge D250, N/A; mechanically driven vacuum pump for fitment.
  • Fits 1989-1991 Dodge D350, N/A; mechanically driven vacuum pump for fitment.
  • Fits 1989-1991 Dodge W250, N/A; mechanically driven vacuum pump for fitment.
  • Fits 1989-1991 Dodge W350, N/A; mechanically driven vacuum pump for fitment.
  • Verify inlet and outlet hose sizing before installation.
  • Gasket or seal is not included, and pulley is not included.
  • Confirm the gear-drive configuration matches the original pump before replacement.

Quality Assurance

Dorman manufactures this replacement pump to match original equipment fit and function using durable materials for reliable operation. The relief valve is included to support stable vacuum performance in the vehicle’s vacuum-operated systems.

Related reading

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1991DodgeD2505.9LL6N/AMechanically driven vacuum pump for fitment.
1991DodgeD3505.9LL6N/AMechanically driven vacuum pump for fitment.
1991DodgeW2505.9LL6N/AMechanically driven vacuum pump for fitment.
1991DodgeW3505.9LL6N/AMechanically driven vacuum pump for fitment.
1990DodgeD2505.9LL6N/AMechanically driven vacuum pump for fitment.
1990DodgeD3505.9LL6N/AMechanically driven vacuum pump for fitment.
1990DodgeW2505.9LL6N/AMechanically driven vacuum pump for fitment.
1990DodgeW3505.9LL6N/AMechanically driven vacuum pump for fitment.
1989DodgeD2505.9LL6N/AMechanically driven vacuum pump for fitment.
1989DodgeD3505.9LL6N/AMechanically driven vacuum pump for fitment.
1989DodgeW2505.9LL6N/AMechanically driven vacuum pump for fitment.
1989DodgeW3505.9LL6N/AMechanically driven vacuum pump for fitment.
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Cardone Reman — 64-13004429103