Product Description
Genuine Cummins
Cummins 3943769 — #3 Fuel Injection Line (VP44 to Injector)
MPN: 3943769 | Also Known As: cylinder 3 injector line, high-pressure fuel line, hard line | Position: Cylinder #3
Why This Part
- ✓ Direct-fit OE hard line pre-bent for factory routing (#3 cylinder).
- ✓ Correct flare nuts & seat geometry for leak-free sealing.
- ✓ Restores injection pressure after line fatigue, vibration cracks, or corrosion.
- ✓ One position-specific line (order other cylinders separately if needed).
OE Fit Position-Specific VP44 24V
Quick Specs
| Type | High-pressure fuel injection line (pump-to-injector) |
|---|---|
| OE Part # | 3943769 (Cylinder #3) |
| System | VP44 / 24-valve 5.9L Cummins |
| Qty Required | 1 per engine position (6 unique lines total) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1998.5–2002 | Ram 5.9L ISB (24V VP44) | Ram 2500/3500 |
Notes: This is the cylinder #3 line only. Each cylinder uses a unique pre-bent line; confirm positions before ordering.
Often Paired With
- Other VP44 lines: #1 (3943765), #2 (3943767), #4 (3943771), #5 (3943773), #6 (3943775)
- Line clamps & retainers to control vibration
- Injectors / connector tube seals if servicing the fuel system
What’s In The Box
- (1) Genuine Cummins Fuel Injection Line — Cylinder #3 (3943769)
- Clamps/hardware not included (reuse or replace as needed)
Install Tips
- Work clean—keep all sealing seats and threads free of debris.
- Start fittings by hand to avoid cross-threading; do not over-bend the line.
- Tighten to factory torque, prime fuel, and check for leaks on warm-up.
FAQ
WILL THIS FIT MY 1998.5–2002 24-VALVE 5.9L CUMMINS?Yes—this OE line is for VP44 24V 5.9L applications in 1998.5–2002 Ram 2500/3500.
IS THIS ONLY FOR CYLINDER #3?Correct. This is the #3 line. Each cylinder uses a unique, pre-bent hard line.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3943769 with factory bends and flare seats.
DO I NEED ANYTHING ELSE TO INSTALL IT?Inspect/replace line clamps, verify injector/connector tube sealing, and follow torque specs. Prime the system and recheck for leaks.
WHAT IF I NEED MULTIPLE LINES?Order each cylinder’s line by its specific part number (e.g., 3943765, 3943767, 3943771, 3943773, 3943775).
Product Videos
Custom Field
Vehicle Year 1998.5,1999,2000,2001,2002
Vehicle Make DODGE
ENGINE 5.9L
