Product Description
CUMMINS 3937214 OEM PISTON COOLING NOZZLE FOR 1994-2002 5.9L CUMMINS
The genuine CUMMINS 3937214 piston cooling nozzle is a critical lubrication component used on 1994-2002 5.9L Cummins B-Series engines.
This OEM oil squirter sprays engine oil directly onto the underside of the piston crown to help reduce piston temperatures, improve durability, and support reliable operation under towing, heavy-load, and performance conditions.
Designed to install directly into the engine block oil gallery, the Cummins 3937214 cooling nozzle delivers the proper spray pattern and oil flow engineered by Cummins for 12-valve and 24-valve applications.
FEATURES
- Genuine OEM Cummins piston cooling nozzle
- Direct-fit replacement for factory oil jet systems
- Designed for proper piston oil spray pattern
- Helps reduce piston crown temperatures
- Supports long-term engine durability
- Important for rebuild and performance applications
- Designed for 5.9L 12-valve and 24-valve Cummins engines
FITMENT
- 1994-1998 Dodge Ram 2500 and 3500 5.9L 12-valve Cummins
- 1998.5-2002 Dodge Ram 2500 and 3500 5.9L 24-valve Cummins
- Select 5.9L B-Series industrial applications
Fitment Note: Verify engine serial number and block compatibility before ordering.
WHAT'S INCLUDED
- 1 Cummins 3937214 OEM piston cooling nozzle
RELATED PARTS
- Cummins main bearing sets
- Cummins rod bearing sets
- Cummins piston ring sets
- Cummins oil pumps
- Cummins lower engine gasket kits
INSTALLATION NOTES
- Verify proper nozzle orientation during installation
- Clean all oil passages before assembly
- Torque fasteners to Cummins specifications
- Replace all piston cooling nozzles during rebuilds
- Inspect oil galleries for debris or contamination
SPECIFICATIONS
- Brand: Cummins
- Part Number: 3937214
- Product Type: Piston cooling nozzle
- Function: Oil squirter and piston cooling jet
- Engine Compatibility: 5.9L Cummins 12-valve and 24-valve
- Fitment Years: 1994-2002
- Vehicle Compatibility: Dodge Ram 2500 and 3500
- UPC: 607611429864
- GTIN: 00607611429864
- Approximate Shipping Weight: 0.05 pound
- Shipping Method: Standard ground shipping
- Condition: New genuine Cummins OEM part
FAQ
Do I need to replace all piston cooling nozzles during a rebuild?
Yes. Replacing all piston cooling nozzles together helps maintain balanced oil flow and piston cooling across the engine.
Will this fit both 12-valve and 24-valve 5.9L Cummins engines?
Yes. Cummins 3937214 is used on many 1994-2002 5.9L 12-valve and 24-valve Cummins applications.
What happens if a piston cooling nozzle fails or becomes clogged?
Restricted or failed cooling nozzles may contribute to piston overheating, scuffing, lubrication loss, and severe engine damage.
Is this a genuine Cummins OEM part?
Yes. This is a genuine Cummins OEM piston cooling nozzle.
Can this be used in performance or high-horsepower engines?
Yes. Proper piston cooling is especially important in towing, performance, and high-cylinder-pressure applications.
