Paccar MX-11 Injector Applications
The MX-11 powers Kenworth T680, T880, and Peterbilt 579 and 567 vocational and regional-haul variants. Compared to the MX-13, the MX-11 trades some peak output for significantly reduced weight, making injector efficiency especially valuable on this platform.
Why Choose HD Injectors for Paccar MX-11 Injectors
- Budget-friendly replacement vs. new OEM MX-11 injector pricing
- Eliminate engine knocking from worn or contaminated nozzles
- Reduce smoke and preserve aftertreatment system health
- Regain lost fuel economy, a direct hit to operating margin when injectors drift out of spec
- Flow-tested and calibrated to factory standards
Our Rebuild Standard
Every Paccar MX-11 injector is disassembled, ultrasonically cleaned, and inspected. Worn high-wear components are replaced with OEM-spec parts. Each injector is flow-tested, high-pressure leak-tested, and verified before shipping.
Ready for Paccar MX-11 Injectors?
Get remanufactured Paccar MX-11 injectors priced below new OEM, flow-tested, leak-tested, and calibrated to factory specs. Not sure whether your Kenworth or Peterbilt takes an MX-11 or MX-13 injector (or which EPA variant applies)? Send us your details through our Make Sure It Fits form and we’ll verify the correct MX-11 part number for your truck before shipping.
Frequently Asked Questions
Is the Paccar MX-11 the same as the DAF MX-11?
Yes, the Paccar MX-11 sold in North America and the DAF MX-11 sold in Europe are the same engine family. Injector part numbers may differ slightly by market and EPA tier, so always confirm the correct application before ordering.
How many injectors does a Paccar MX-11 have?
Six, one per cylinder on the inline-six MX-11 platform.
Can I use MX-13 injectors in an MX-11?
No. Despite coming from the same engine family, the MX-11 and MX-13 use different injectors. Part numbers and calibration specs are not interchangeable.
What are the warning signs of a failing MX-11 injector?
Hard starting, rough idle, excessive smoke, power loss, rising fuel consumption, active cylinder-specific fault codes, and fuel dilution in the engine oil are the most common symptoms.
Do MX-11 injectors need ECM programming during installation?
Yes. Each injector has calibration trim codes that must be programmed into the ECM to ensure correct cylinder balance.
Contact Us!
We’ll be happy to answer all of your questions. Our expertise in turbo engines and combined 20 years of experience plus modern, top quality equipment is all you need.
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