Cummins 4983584 — Genuine Mechanical Fuel Transfer (Lift) Pump

MPN: 4983584  |  Also Known As: mechanical lift pump, fuel supply pump  |  Common Cross-Refs (ID): 3970880, 3966154, 3928143, 3904374, 3901425, 4937405

The genuine Cummins 4983584 fuel transfer pump restores reliable fuel supply pressure on 1989–1993 Dodge Ram 2500/3500 5.9L 12-valve trucks (VE rotary pump). Direct bolt-on replacement with the factory priming lever for easy bleeding after installation.

Features & Benefits

• OE mechanical design driven by the cam—no wiring required.
• Correct inlet/outlet clocking and priming lever for quick install and service.
• Restores hot-start and throttle response by maintaining supply pressure to the VE injection pump.
• Genuine Cummins build quality for long life on B-Series platforms.

Verified Fitment (Automotive)

Industrial/Off-Highway: Cummins catalogs 4983584 as a Fuel Transfer Pump used primarily on Euro 2 5.9-liter B-engines and other B-Series variants like 4BT/6BT—verify by ESN for equipment engines.

Specifications

• Type: Mechanical diaphragm fuel transfer (lift) pump
• OE Part Number: 4983584
• Actuation: Cam-lever (includes manual priming lever)
• Mounting Gasket: 3939258 (sold separately)
• Quantity Required: 1 per engine

Often Paired With

• Mounting gasket: Cummins 3939258 (recommended every pump service)
• Fuel filter service (replace element and inspect banjo washers/hoses)
• Supply/return hose kit (refresh old rubber lines to prevent aeration)

What’s In The Box

• (1) Genuine Cummins Mechanical Fuel Transfer Pump (4983584)
• Gasket not included—order 3939258 separately.

Installation Tips

• Depressurize the system; catch diesel and clean the mounting area.
• Use a new 3939258 gasket; orient the lever correctly on the cam and torque fasteners to spec.
• Hand-prime with the lever until fuel is bubble-free; check for leaks and verify idle/road-test.
• If hard-start persists, inspect tank pickup, hoses, and filter head for air leaks.

FAQ

WILL THIS FIT MY 1989–1993 5.9L CUMMINS RAM?

Yes—this is the OE mechanical lift pump for 1989–1993 5.9L (VE) trucks.

DOES THIS INCLUDE THE MOUNTING GASKET?

No—order gasket 3939258 separately.

WHAT ARE THE COMMON CROSS-REFERENCE NUMBERS?

Frequent interchanges include 3970880, 3966154, 3928143, 3904374, 3901425, 4937405. Always confirm by VIN/ESN.

DOES THIS FIT 1994–1998 12-VALVE TRUCKS?

Later 12-valve (P7100) applications typically use different lift-pump part numbers—confirm by VIN/ESN for 1994–1998.

IS THIS A GENUINE CUMMINS PART?

Yes—OE Cummins 4983584.