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Fuel Injector for Cummins ISX (4954434RX)

Having trouble starting? Is your engine misfiring? Are you experiencing excessive fuel consumption?

These are signs it may be time to replace the fuel injectors in your Cummins ISX.

Avoid further impacts to your truck or bottom line and get your ISX diesel engine running with a quality fuel injector from America’s Trusted Diesel Engine Parts Supplier.

Each injector is fully disassembled and thoroughly inspected to meet OEM specifications and tolerances. All surfaces are lapped for proper sealing. Nozzles are rebuilt and reground to ensure sealing and atomization.

Nozzle valve opening pressure is set to OE specifications. New o-rings are installed, the control valves are rebuilt and dimensioned back to OE specifications. All components are reassembled and calibrated on a computer-controlled test bench to measure flow, internal pressure and timing.


What do you get in return? Increased power, decreased emissions and improved efficiency.

You don’t have to sacrifice quality with HHP. Get a premium injector you can count on from the fuel system specialists backed by a 1-year warranty and industry-leading service from our ASE-certified parts technicians.

Cummins ISX Fuel Injectors For Sale At HHP. Check These Out!

Order now by calling 844-304-7688.

From diagnosis through delivery, we’re Highway and Heavy Parts.

FAQs for the Cummins ISX Fuel Injector

1. What are the signs that my Cummins ISX engine needs new fuel injectors?

Signs include trouble starting, engine misfiring, and excessive fuel consumption, which can indicate that your fuel injectors are failing and need replacement.

2. Why is it important to replace faulty fuel injectors in my Cummins ISX engine?

Replacing faulty injectors restores proper fuel atomization, improving engine power, efficiency, and reducing emissions, ensuring optimal engine performance.

3. What makes the fuel injectors from Highway and Heavy Parts a high-quality choice for my Cummins ISX engine?

Our injectors are fully disassembled, inspected, and rebuilt to meet OEM specifications. Each injector is carefully calibrated for proper flow, pressure, and timing to ensure long-lasting performance.

4. How does replacing the fuel injectors improve my Cummins ISX engine’s performance?

Replacing the injectors restores proper fuel delivery, increases engine power, reduces emissions, and improves fuel efficiency, ensuring smooth and reliable engine performance.

5. What warranty comes with the fuel injectors for my Cummins ISX from Highway and Heavy Parts?

The fuel injectors are backed by a 1-year warranty, offering peace of mind and ensuring long-term reliability and performance.