Product Description
The CUMMINS 3943771 OEM FUEL INJECTION LINE #4 is designed for 1998.5–2002 Dodge Ram trucks equipped with the 5.9L 24-valve Cummins diesel engine. This genuine Cummins high-pressure fuel injection line delivers fuel from the injection pump to cylinder number four while maintaining proper fuel system performance, fitment, and reliability.
Use this part when replacing a damaged, corroded, leaking, or contaminated injector line. Properly functioning fuel lines are critical for maintaining injection timing, fuel delivery, and engine performance. Always verify fitment by engine serial number and part number before ordering.
FEATURES
- Genuine Cummins OEM fuel injection line
- Designed for cylinder number four (#4)
- Direct-fit replacement for factory fuel system components
- Maintains proper high-pressure fuel delivery
- Helps restore fuel system reliability and performance
- Ideal for maintenance, repair, or fuel system restoration
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 3943771 OEM Fuel Injection Line #4
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 3943771
- VP44 Fuel Injection Pump Components
- Cummins Fuel Injector Components
- Fuel Injection Lines #1, #2, #3, #5, and #6
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 3943771
- Part Type: Fuel Injection Line
- Cylinder Position: #4
- Engine Compatibility: 5.9L Cummins 24-Valve
- Fuel System: VP44
- Fitment Years: 1998.5–2002
- Vehicle Application: Dodge Ram 2500 / 3500
- Condition: New OEM Cummins
- Installation Type: Direct Replacement
FAQ
Will this fuel injection line fit my truck?
This fuel injection line fits many 1998.5–2002 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L 24-valve Cummins engine and VP44 injection pump. Always verify fitment before ordering.
Is this a genuine Cummins part?
Yes. Cummins 3943771 is a genuine OEM fuel injection line manufactured to Cummins specifications.
Which cylinder does this line serve?
This fuel injection line is designed specifically for cylinder number four (#4).
When should a fuel injection line be replaced?
Replacement is recommended if the line becomes damaged, bent, cracked, corroded, contaminated, or develops a fuel leak.
Can I reuse old injection line sealing surfaces?
Always inspect mating surfaces and fittings carefully during installation. Follow Cummins service procedures and torque specifications for proper installation.
Do I need any related parts?
Inspect the fuel injectors, VP44 injection pump fittings, connector tubes, and remaining fuel injection lines during service and replace worn components as necessary.
