Product Description
Genuine Cummins
Cummins 3905353 — Fuel Return Line Tee Fitting (Back of Cylinder Head)
MPN: 3905353 | Also Known As: male union tee, injector return tee | Location: Back of cylinder head, VP44 return circuit
Why This Part
- ✓ OE tee fitting for the VP44 injector return line on 24-valve 5.9L engines.
- ✓ Direct-fit replacement to stop leaks and restore proper return flow.
- ✓ Correct geometry for the rear-of-head connection—no guesswork.
- ✓ Built by Cummins for long-term reliability and sealing.
OE Fit Stock Replacement 1 Per Engine
Quick Specs
| Type | Fuel injector return line union tee (male tee) |
|---|---|
| OE Part # | 3905353 |
| Qty Required | 1 per engine (sold individually) |
| System | Low-pressure return (VP44 injection system) |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1998.5–2002 | Ram 5.9L ISB (24V, VP44) | Ram 2500/3500 |
Industrial/Off-Highway: Also used on certain B-series engines (e.g., Non-Certified 5.9L B). Always verify by ESN before ordering.
Often Paired With
- 3942592 Fuel Drain Tube (return to tank)
- 3942966 Fuel Drain Tube (cylinder head)
- 3945707 Fuel Return Line (from VP44)
- 3963988 Banjo Sealing Washers (common replacement during service)
What’s In The Box
- (1) Genuine Cummins Fuel Return Line Tee Fitting (3905353)
- Lines and sealing washers sold separately (see “Often Paired With”).
Install Tips
- Relieve residual fuel pressure and capture fuel to avoid spills.
- Inspect/replace copper sealing washers; torque banjo hardware to spec.
- After start-up, check for leaks with the engine running.
FAQ
WILL THIS FIT MY 1998.5–2002 24-VALVE CUMMINS RAM?Yes—this tee is used on VP44-equipped 5.9L trucks (1998.5–2002). Verify by VIN/ESN if parts have been changed.
WHERE DOES THIS FITTING GO?It installs at the back of the cylinder head as part of the injector/VP44 fuel return circuit.
DOES IT INCLUDE SEALING WASHERS?No—washers are sold separately. We recommend new banjo sealing washers (e.g., Cummins 3963988) during service.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3905353 for correct fit and durability.
WHAT OTHER RETURN LINES SHOULD I CHECK?Inspect the related tubes/lines for cracks or corrosion: 3942592 (to tank), 3942966 (head), and 3945707 (from VP44).
Product Videos
Custom Field
YEAR 1998.5,1999,2000,2001,2002
MAKE DODGE
ENGINE 5.9L
