A bad misfire under load in the mid to upper gears on your Cummins N14 will keep you struggling to maintain posted speeds on the road. We know it’s frustrating to have issues with your fuel system. That’s why we bring you the best parts available with our Cummins N14 Celect Fuel Injector!
Stop buying your injectors from cleaning shops, and get them from the certified fuel system specialists at HHP.
Put an end to your troubles with a quality injector that is tested on industry-leading, specialized fuel injection equipment. Your fuel injection pressure and timing will be better than ever with our remanufacturing standards that meet or exceed OEM specifications.

Cummins N14 Celect Fuel Injector
Each fuel injector is fully disassembled, thoroughly inspected, and all critical components are replaced. Restore power to your N14 to get you back on the road with more power, increased fuel economy, and lower emissions.
Our fuel injectors are backed by a 1-year unlimited mileage warranty and expert advice from our ASE-certified technicians. Stop chasing the cheapest deal out there and get the best quality injectors from the certified fuel system specialists.
Connect with HHP for industry-leading technical expertise, quality diesel parts, and fast shipping – providing you with one complete solution. Order now by calling 844-304-7688 or visit us online at highwayandheavyparts.com.
FAQs for Cummins N14 Celect Fuel Injector
1. What causes a misfire under load in the Cummins N14 engine?
A misfire under load—especially in the mid to upper gears—is often caused by a faulty or weak fuel injector. When the injector can’t maintain the proper fuel pressure or timing under heavy demand, the combustion process breaks down, resulting in hesitation, power loss, or engine knocking. Replacing the injector with one built to OEM specs—like HHP’s N14 Celect Injector—can restore power and smooth acceleration.
2. How are HHP’s Cummins N14 injectors remanufactured?
HHP’s 3411759R injectors are completely torn down and every critical component—such as the nozzle, spring, and O-rings—is replaced. They’re then reassembled, dimensioned back to OEM specifications, and tested on industry-leading fuel injection equipment to verify fuel pressure, timing, and spray pattern. This ensures you’re getting maximum durability and performance from every unit.
3. Will this injector work on all N14 Celect engines?
Yes. The 3411759R is designed specifically for Cummins N14 Celect engines and is compatible across a wide range of N14-powered trucks. However, we always recommend verifying your engine serial number before ordering. HHP’s ASE Certified Technicians can confirm exact fitment for your application.
4. What performance improvements can I expect with a new injector?
Swapping in a properly remanufactured N14 injector will reduce misfires, boost torque, improve throttle response, and optimize fuel efficiency. Many drivers notice smoother RPMs, easier starting, and a significant drop in exhaust smoke and fuel odor. It’s one of the best ways to restore peak engine performance.
5. What kind of warranty comes with the 3411759R injector?
This injector includes a 1-year unlimited mileage warranty, giving you peace of mind no matter how far you haul. Combined with access to our ASE-certified parts team for installation help and diagnostics, you’re getting support that lasts beyond the sale.






