Certain EPA21 PACCAR MX engines are equipped with PHINIA fuel injectors that do not meet PHINIA’s...
Kenworth technical service bulletin E338 for 2022-2025 Kenworth T680, 2022-2025 Peterbilt 579 and 2022-2025 Peterbilt 389 and others.
- Bulletin number
- E338 (E338)
- Component
- Engine
- Summary
- Certain EPA21 PACCAR MX engines are equipped with PHINIA fuel injectors that do not meet PHINIA’s manufacturing specifications.
Owners of these vehicles have filed 2 complaints in the engine category.
Vehicles covered
- Kenworth T680 2022-2025 2022202320242025
- Peterbilt 579 2022-2025 2022202320242025
- Peterbilt 389 2022-2025 2022202320242025
- Kenworth T880 2022-2025 2022202320242025
- Peterbilt 567 2022-2025 2022202320242025
- Peterbilt 520 2022-2025 2022202320242025
- Peterbilt 365 2022-2025 2022202320242025
- Kenworth W990 2022-2025 2022202320242025
- Peterbilt 367 2022-2025 2022202320242025
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