Product Description
The CUMMINS 3923171 OEM FUEL INJECTION PUMP RETURN LINE (FUEL DRAIN TUBE) is designed for 1994–1998 Dodge Ram trucks equipped with the 5.9L 12-Valve Cummins diesel engine. This genuine Cummins fuel return line is engineered to provide proper fuel drainage and return flow from the injection pump while maintaining OEM fitment, reliability, and leak-free operation.
Use this part when replacing a damaged, corroded, leaking, or missing fuel return line. Proper fuel return flow is critical for maintaining fuel system performance and preventing fuel leaks. Always verify fitment by engine serial number before ordering.
FEATURES
- Genuine Cummins OEM fuel injection pump return line
- Direct-fit replacement for factory fuel drain tube
- Designed for 1994–1998 5.9L 12-Valve Cummins applications
- Helps maintain proper fuel return flow from the injection pump
- Restores factory fuel system integrity and reliability
- Ideal for maintenance, repair, or restoration projects
FITMENT
- 1994–1998 Dodge Ram 2500 5.9L Cummins 12-Valve
- 1994–1998 Dodge Ram 3500 5.9L Cummins 12-Valve
- Equipped with Bosch P7100 (P-Pump) fuel injection system
WHAT'S INCLUDED
- 1 Cummins 3923171 OEM Fuel Injection Pump Return Line (Fuel Drain Tube)
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3923171
- Fuel Injection Pump Supply Lines
- Fuel Return Line Sealing Washers
- Bosch P7100 Fuel System Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3923171
- Part Type: Fuel Injection Pump Return Line / Fuel Drain Tube
- Engine Compatibility: 5.9L Cummins 12-Valve
- Fuel System: Bosch P7100 Injection Pump
- Fitment Years: 1994–1998
- 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 1994–1998 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 12-Valve Cummins and Bosch P7100 injection pump. Always verify fitment before ordering.
What does the fuel injection pump return line do?
The return line carries excess fuel away from the injection pump and routes it back into the fuel system, helping maintain proper fuel pressure and operation.
Is this a genuine Cummins part?
Yes. Cummins 3923171 is a genuine OEM Cummins replacement component manufactured to factory specifications.
What is included with this part?
This listing includes one Cummins 3923171 fuel injection pump return line as described above.
What are common signs of a damaged return line?
Common symptoms include fuel leaks, fuel odor, visible corrosion, cracked tubing, or seepage around return line connections.
Do I need any related parts?
Inspect sealing washers, fuel fittings, return hoses, and other fuel system components during installation and replace worn parts as necessary.
