Product Description
Cummins 4919809 — Hydraulic Pump (Power Steering) for Ram 5.9L 24V
MPN: 4919809 | Also Known As: power steering pump, hydraulic pump | Supersedes/Related: 3923114, 3923123
Why This Part
- ✓ OE hydraulic/power steering pump engineered for proper assist and steering feel.
- ✓ Direct-fit for 1998.5–2002 Ram 2500/3500 5.9L 24V (VP44).
- ✓ Restores pressure & flow to steering and hydro-boost systems.
- ✓ Durable OE construction—built to Cummins specifications.
Quick Specs
| Type | Hydraulic / Power Steering Pump |
|---|---|
| OE Part # | 4919809 (replaces/related: 3923114, 3923123) |
| Qty Required | 1 per vehicle (sold individually) |
| System Notes | Works with factory vacuum-brake or hydro-boost setups; verify hose routing |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1998.5–2002 | Ram 5.9L ISB (24V VP44) | Ram 2500/3500 |
Notes: For 1994–1998 12-valve trucks, use Cummins pump 3930277. Industrial listings may reference “Tier 1 5.9 B”—always verify by VIN/ESN for on-highway fitment.
Often Paired With
- Power steering pressure & return hoses (vacuum vs. hydro-boost vary—verify by brake system)
- Pulley & belt inspection/replacement if worn or noisy
- OEM-approved fluid per vehicle manual; full system flush on replacement
What’s In The Box
- (1) Genuine Cummins Hydraulic / Power Steering Pump (4919809)
- Hoses/hardware sold separately (see “Often Paired With”)
Install Tips
- Flush system to remove debris/contaminants; fill with correct fluid.
- Prime and bleed per service manual; inspect for leaks on warm-up.
- Verify pulley alignment and belt condition; torque fasteners to spec.
FAQ
WILL THIS FIT MY 1998.5–2002 5.9L 24V CUMMINS RAM?Yes—designed as the OE hydraulic/power steering pump for 1998.5–2002 Ram 2500/3500 5.9L 24V VP44 (verify by VIN/ESN).
WHAT ARE THE SUPERSEDED OR RELATED NUMBERS?Common previous numbers include 3923114 and 3923123; 4919809 is the later Cummins number.
DOES THIS WORK WITH HYDRO-BOOST AND VACUUM-BRAKE TRUCKS?Yes—the OE pump supports both systems. Hose routing/fittings vary; match to your brake setup.
SHOULD I FLUSH THE SYSTEM WHEN REPLACING THE PUMP?Absolutely. Flush lines/gear, use the correct fluid, and bleed the system to prevent noise and premature wear.
WHAT ABOUT 12-VALVE OR 2003+ TRUCKS?1994–1998 12-valve typically use Cummins 3930277. 2003+ 5.9/6.7 trucks use different pumps; this unit targets 1998.5–2002.
