Product Description
Genuine Cummins
Cummins 3945707 — Fuel Drain Tube / VP44 Fuel Return Line
MPN: 3945707 | Also Known As: VP44 return line, fuel return line from VP44 | Includes: grommet seal & nut (banjo sealing washers sold separately)
Why This Part
- ✓ OE return line from the VP44 injection pump to the tee fitting.
- ✓ Direct-fit for 1998.5–2002 5.9L 24-valve VP44 trucks.
- ✓ Restores proper fuel return routing and leak-free operation.
- ✓ Genuine Cummins steel line & hardware for durability.
OE Fit Stock Replacement 1 Per Engine
Quick Specs
| Type | Fuel drain / return tube (VP44 to tee) |
|---|---|
| OE Part # | 3945707 |
| Qty Required | 1 per engine (sold individually) |
| Hardware | Includes grommet & nut; 14mm banjo sealing washers sold separately |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1998.5–2002 | Ram 5.9L ISB (24V, VP44) | Ram 2500/3500 |
Industrial/Off-Highway: Used primarily on non-certified ISB/QSB 5.9 platforms—verify by ESN.
Often Paired With
- Fuel Return Tee Fitting: Cummins 3905353
- Related Return Lines: 3942966, 3942592
- 14mm Banjo Sealing Washers: pair (sold separately)
What’s In The Box
- (1) Genuine Cummins Fuel Drain / Return Tube (3945707)
- (1) Grommet seal & (1) nut
- Banjo sealing washers sold separately
Install Tips
- Route exactly as factory; avoid chafe points and kinks.
- Always use new sealing washers on banjo connections; torque to spec.
- Prime the fuel system and check for leaks after installation.
FAQ
WILL THIS FIT MY 1998.5–2002 5.9L VP44 RAM?Yes—this is the OE VP44 return line for 1998.5–2002 Dodge Ram 2500/3500 5.9L 24-valve applications (verify by VIN/ESN).
WHAT DOES THIS LINE CONNECT?It routes fuel from the VP44 injection pump to the return tee fitting.
WHAT HARDWARE IS INCLUDED?Includes the grommet seal and nut. 14mm banjo sealing washers are not included.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3945707 for proper fit, materials, and durability.
WILL THIS WORK ON COMMON-RAIL (2003+) TRUCKS?No—this line is specific to VP44-equipped 5.9L (1998.5–2002). Common-rail systems use different lines.
Product Videos
Custom Field
Vehicle Year 1998.5-2002
Vehicle Make DODGE
ENGINE CUMMINS
