Product Description
Genuine Cummins
Cummins 3937214 — Piston Cooling Nozzle (Oil Squirter / Jet)
MPN: 3937214 | Also Known As: piston oil squirter, cooling jet | Cross-Refs: 3919002, 3930139
Why This Part
- ✓ OE nozzle that directs oil to the underside of the piston crown for temperature control.
- ✓ Direct-fit for 1994–2002 Ram 5.9L Cummins 12V & 24V.
- ✓ Sold individually — order 6 per engine for a complete set.
- ✓ Restores proper piston cooling during rebuilds or repairs.
OE Fit Stock Replacement 6 Per Engine
Quick Specs
| Type | Piston cooling nozzle / oil squirter jet |
|---|---|
| OE Part # | 3937214 (cross: 3919002, 3930139) |
| Qty Required | 6 per engine (sold individually) |
| Material | Hardened steel, OE geometry |
Verified Fitment (Automotive)
| Year Range | Engine | Chassis |
|---|---|---|
| 1994–2002 | Ram 5.9L Cummins (12V & 24V) | Ram 2500/3500 |
Industrial/Off-Highway: Common on B-Series 3.9L/5.9L (4BT/6BT) and ISB/QSB variants—always confirm by ESN.
Often Paired With
- Full set of nozzles: order quantity 6 for a complete engine
- Oil & filter change: after rebuild/repair to flush debris
- Oil pan gasket/sealant: if the pan is removed during service
What’s In The Box
- (1) Genuine Cummins Piston Cooling Nozzle (3937214)
- Additional nozzles and hardware sold separately.
Install Tips
- Install with the spray orifice oriented correctly toward the piston underside.
- Torque fasteners to factory spec; verify nozzle clearance and alignment.
- Prime lubrication system and check for leaks on first start.
FAQ
WILL THIS FIT MY 1994–2002 5.9L CUMMINS RAM?Yes—direct-fit for 5.9L 12V & 24V engines used in 1994–2002 Ram 2500/3500 (verify by VIN/ESN).
HOW MANY NOZZLES DO I NEED?Six—one per cylinder. This listing is for a single nozzle so you can replace one or build a full set.
WHAT ARE THE CROSS-REFERENCE NUMBERS?Common crosses include 3919002 and 3930139; use 3937214 when ordering a genuine Cummins replacement.
IS THIS A GENUINE CUMMINS PART?Yes—OE Cummins 3937214 with factory geometry and spray pattern for proper piston cooling.
DOES THIS FIT 2003+ COMMON-RAIL 5.9/6.7L?This listing targets 1994–2002 5.9L B-Series in Ram trucks. For industrial ISB/QSB or later platforms, confirm by ESN.
Product Videos
Custom Field
Vehicle Year 1994-2002
Vehicle Make DODGE
ENGINE 5.9L CUMMINS
