Product Description
The CUMMINS 4935974 OEM #4/#5 FUEL INJECTION LINE is designed for 2007.5–2018 6.7L Cummins ISB diesel engines. This genuine Cummins high-pressure fuel supply tube delivers fuel from the common rail to the #4 and #5 injectors while maintaining proper fuel pressure, flow, and sealing integrity.
Use this part when replacing a damaged, leaking, corroded, or contaminated injector line. Fuel injection lines should be inspected whenever injectors are replaced or when diagnosing high-pressure fuel system leaks. Always verify fitment by engine serial number before ordering.
FEATURES
- Genuine Cummins OEM fuel injection line
- Direct-fit replacement for #4 and #5 injector positions
- Designed for high-pressure common rail fuel systems
- Manufactured to Cummins OE specifications
- Helps maintain proper fuel delivery and injection performance
- Ideal for fuel system repair and injector service
FITMENT
- 2007.5–2018 Ram 2500 6.7L Cummins
- 2007.5–2018 Ram 3500 6.7L Cummins
- 2007.5–2018 Ram 4500 6.7L Cummins
- 2007.5–2018 Ram 5500 6.7L Cummins
- Select Cummins ISB 6.7L industrial and commercial applications
WHAT'S INCLUDED
- 1 Cummins 4935974 OEM #4/#5 Fuel Injection Line
CROSS-REFERENCE AND RELATED PRODUCTS
- Cummins 4935974
- Cummins Fuel Injector Supply Tubes
- Cummins Fuel Rail Components
- Cummins 6.7L Fuel Injectors
- Cummins High-Pressure Fuel System Components
SPECIFICATIONS
- Manufacturer: Cummins
- Part Number: 4935974
- Part Type: Fuel Injection Line / Injector Fuel Supply Tube
- Engine Compatibility: 6.7L Cummins ISB
- Injector Positions: #4 and #5
- Fitment Years: 2007.5–2018
- Vehicle Application: Ram 2500, 3500, 4500, 5500
- Fuel System Type: High-Pressure Common Rail
- Condition: New OEM Cummins
FAQ
Will this part fit my truck?
This fuel injection line fits many 2007.5–2018 6.7L Cummins applications. Always verify fitment by engine serial number before ordering.
What does this fuel line do?
This line transfers high-pressure fuel from the common rail to the #4 and #5 fuel injectors, ensuring proper fuel delivery and engine performance.
Is this a genuine Cummins part?
Yes. Cummins 4935974 is a genuine OEM fuel injection line manufactured to Cummins specifications.
Should injector lines be replaced when replacing injectors?
Cummins recommends inspecting all high-pressure fuel lines during injector service. Replace any line showing damage, corrosion, contamination, or sealing concerns.
What are signs of a failing injector line?
Common symptoms include fuel leaks, fuel odor, hard starting, rough running, loss of fuel pressure, and visible damage to the line.
Do I need any related parts?
Inspect the injectors, connector tubes, fuel rail, crossover tubes, and related high-pressure fuel system components during installation and replace worn parts as necessary.
