Product Description
The CUMMINS 3942592 OEM FUEL DRAIN TUBE / FUEL RETURN LINE is designed for 1998.5–2002 Dodge Ram trucks equipped with the 5.9L 24-valve Cummins diesel engine. This genuine Cummins fuel system component returns excess fuel from the engine back to the fuel tank while maintaining proper fuel system operation and OEM fitment.
Use this part when repairing leaking, damaged, corroded, or restricted fuel return lines. Proper fuel return flow is critical for fuel system performance, injector cooling, and long-term reliability. Always verify fitment by part number and application before ordering.
FEATURES
- Genuine Cummins OEM fuel drain tube / fuel return line
- Direct-fit replacement for factory fuel return plumbing
- Designed for VP44-equipped 5.9L Cummins engines
- Helps maintain proper fuel return flow to the tank
- Restores fuel system reliability and leak-free operation
- Ideal for maintenance, repair, or restoration projects
FITMENT
- 1998.5–2002 Dodge Ram 2500 5.9L Cummins 24-Valve
- 1998.5–2002 Dodge Ram 3500 5.9L Cummins 24-Valve
- VP44 injection pump-equipped applications
WHAT'S INCLUDED
- 1 Cummins 3942592 OEM Fuel Drain Tube / Fuel Return Line
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3942592
- VP44 Fuel Supply Components
- Fuel Return System Components
- Fuel Filter Housing Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3942592
- Part Type: Fuel Drain Tube / Fuel Return Line
- Engine Compatibility: 5.9L Cummins 24-Valve
- Fuel System Type: VP44
- Fitment Years: 1998.5–2002
- Vehicle Application: Dodge Ram 2500 / 3500
- Condition: New OEM Cummins
- Installation Type: Direct Replacement
FAQ
Will this part fit my truck?
This fuel return line fits many 1998.5–2002 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 24-valve Cummins engine. Always verify fitment using your part number and application before ordering.
Is this a genuine Cummins part?
Yes. Cummins 3942592 is a genuine OEM Cummins fuel drain tube and fuel return line.
What does the fuel return line do?
The fuel return line routes excess fuel from the engine and fuel system back to the fuel tank, helping maintain proper fuel pressure and fuel circulation.
What are signs of a failing fuel return line?
Common symptoms include fuel leaks, fuel odor, corrosion, physical damage, or fuel seepage around the line and fittings.
Does this fit VP44-equipped trucks?
Yes. This component is designed for 1998.5–2002 5.9L Cummins applications equipped with the Bosch VP44 injection pump.
Do I need any related parts?
Inspect the fuel supply lines, return fittings, banjo bolts, sealing washers, fuel filter housing, and related fuel system components during installation and replace worn parts as necessary.
