Select Model
US
Add to Wish List
100k+ Customers' Top Choice
Chosen by over 100,000 customers for trusted quality and exceptional service.
1 Year Warranty
Enjoy a full year of warranty, ensuring long-lasting reliability and peace of mind.
90-Day Return
Hassle-free 90-day return policy for a risk-free shopping experience.
24/7 Service
Round-the-clock support to assist you whenever you need it.
Fuel Injector Kit 5579421PX 5579421RX for Cummins Engine X15 ISX15 QSX15 ISX12 QSK60
Important Note: Replace as a SET for Best Results.
Fuel injectors wear at the same rate. Mixing new and old injectors causes uneven atomization, leading to vibrations or "Check Engine" lights. Replace the full set to ensure balanced power and peak performance.
Replacement Part Number: 5579421, 5579421PX, 5579421RX, 5579421NX
Fit For Cummins Engine:
ISX12 G CM2180 EJ, ISX15 CM2350 X101, QSK60 CM850 MCRS, X15 CM2350 X114B, X15 CM2350 X116B, X15 CM2350 X123B, X15 CM2350 X129B, X15 CM2450 X124B, X15 CM2450 X134B, X15, ISX15, QSX15
| Brand: | FridayParts |
| Compatible Engine Brand: | For CUMMINS |
| Engine Number: | ISX15, QSX15, X15, QSK60 CM850 MCRS, X15 CM2350 X116B, ISX15 CM2350 X101, ISX12 G CM2180 EJ, X15 CM2350 X129B, X15 CM2350 X114B, X15 CM2350 X123B, X15 CM2450 X134B, X15 CM2450 X124B |
| Replacement Part Number: | 5579421,5579421NX,5579421PX,5579421RX |
Ships to:
Delivery:
Choose options for shipping rates.