Product Description
Genuine Cummins
Cummins 3918585 — Turbocharger Oil Drain Connection / Turbo Oil Drain Tube
MPN: 3918585 | Also Known As: turbo oil drain tube, turbo oil return | Cross-Refs (ID): 3911347
Why This Part
- ✓ OE replacement tube that returns oil from the turbo to the engine.
- ✓ Direct-fit for 1994–2002 Ram 5.9L Cummins (12V & 24V).
- ✓ Restores proper turbo lubrication & drain-back after damage or corrosion.
- ✓ Genuine Cummins materials and geometry for leak-free sealing.
OE Fit Stock Replacement 1 Per Turbo
Quick Specs
| Type | Turbocharger Oil Drain Connection (Oil Return Tube) |
|---|---|
| OE Part # | 3918585 |
| Qty Required | 1 per turbo (sold individually) |
| Interfaces | Bolts to turbo center section; mates to drain elbow/hose at block |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1994–2002 | Cummins 5.9L (12V ’94–’98, 24V ’98.5–’02) | Ram 2500/3500 |
Industrial/Off-Highway: Also used on B-series platforms (e.g., 4B3.9/6B5.9). Always verify by Engine Serial Number (ESN).
Often Paired With
- Turbo Oil Drain Gasket: 5264569 (turbo flange)
- Turbo Oil Drain Elbow: 3903744 (block-side elbow)
- Turbo Oil Drain Hose: 3286499 (drain hose)
- Drain Hose Clamp: 3937613
What’s In The Box
- (1) Genuine Cummins Turbo Oil Drain Tube / Connection (3918585)
- Gaskets, elbow, hose & clamp sold separately (see “Often Paired With”).
Install Tips
- Clean mating surfaces; use a new gasket at the turbo flange.
- Inspect the elbow/hose for swelling or cracks; replace as needed.
- After install, idle and check for leaks with a bright light.
FAQ
WILL THIS FIT MY 1994–2002 5.9L CUMMINS RAM?Yes—this is the OE turbo oil drain tube for 1994–2002 5.9L (12V & 24V). Verify by VIN/ESN if components were changed.
IS THIS THE TUBE THAT BOLTS TO THE BOTTOM OF THE TURBO?Correct—it bolts to the turbo center section and routes oil back to the engine via the elbow/hose at the block.
WHAT SEALS OR HARDWARE DO I NEED?At minimum, a new turbo drain gasket (5264569). Many also replace the elbow (3903744), hose (3286499), and clamp (3937613).
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3918585 for proper fit and long-term durability.
DOES THIS WORK ON INDUSTRIAL B-SERIES ENGINES?Yes—commonly used on B-series applications; confirm by ESN (e.g., 4B3.9/6B5.9 variants).
