2019-2025 Cummins Fuel Injector Line Kit (21S601)

The 21S601 is Industrial Injection's high-pressure fuel injector line kit for the 2019-2025 6.7L Cummins — a complete set of six replacement lines designed for the 5th-gen Ram common rail system. Fuel lines endure extreme pressure cycles, fatigue over time, and pick up debris during injector swaps; this kit is built to maintain a precise, leak-free connection between the fuel rail and injectors during a fuel system service or injector refresh.

Part Number: 21S601

• Engineered for the high injection pressures of 2019+ 6.7L Cummins engines
• Designed specifically for the 5th-gen Ram head and fuel rail configuration for a secure, no-leak seal
• Corrosion-resistant construction to resist pitting and internal scaling
• Promotes consistent fuel flow across all six cylinders
• Direct replacement for factory lines
• Includes one complete set of six high-pressure fuel injector lines

• High-pressure fuel lines are widely considered one-time-use; replacement is recommended whenever they are removed.
• Specifically for the 2019 and newer "new body style" Ram trucks.
• Ensure the fuel rail and injector inlets are surgically clean before installing new lines to prevent premature injector failure.

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