Description
Peterbilt 579 Next Gen Air Dam Cover & Extension – Passenger Side Replacement
Restore the lower front appearance and airflow performance of your Peterbilt 579 with this passenger-side air dam cover and extension. This part is designed for 2022+ Peterbilt 579 Next Gen trucks and fits in the factory location using the original mounting points.
If your lower front air dam is damaged, cracked, or missing, this replacement brings the correct shape and structure back to the front end.
The air dam helps direct airflow under the truck, improves aerodynamics, and maintains the clean look of the newer 579 design. A damaged or missing air dam can cause loose panels, poor airflow, uneven fuel efficiency, and an unfinished appearance. This replacement restores proper alignment and stability.
Key Features
• Fits Peterbilt 579 Next Gen (2022+)
• Passenger side air dam cover and extension
• Direct-fit replacement
• OEM-style design and shape
• Strong construction for daily highway use
• Matches factory mounting points
This part installs easily and replaces a damaged lower panel without modification. The design lines up with the bumper and side fairings, keeping the truck looking clean and modern.
Why This Air Dam Matters
The lower air dam plays an important role in front-end airflow and fuel efficiency. When it is cracked or missing, you may notice:
• More wind drag
• Reduced aerodynamic performance
• Misaligned front panels
• A gap or unfinished look under the bumper
Replacing the air dam restores proper airflow and protects the lower front structure.
Built for Daily Use
This part is made to handle:
• Highway wind load
• Road debris
• Temperature changes
• Continuous vibration
The material keeps its shape over time and is suitable for long-haul and fleet use.
Fitment Information
Fits the following:
• Peterbilt 579
• Model year 2022 and newer
• Passenger side
• Air dam cover + extension assembly
Replaces OE Part Numbers
• N77-6082R
• N46-6073R
Cross Reference Keywords
Air dam cover
Air dam extension
Lower bumper fairing
Front lower panel Peterbilt 579
579 Next Gen lower valance
PB579 air deflector panel
Peterbilt 579 aerodynamic lower panel
Pickup & Contact Information
Alsip, Illinois Location
5120 W 125th Pl, Alsip, IL 60803
Call: 708-866-2000
Text: 708-910-4096
Email: info@truckzoneparts.com
Fort Myers, Florida Location
17121 Cam Ct, Fort Myers, FL 33967
Call: 239-342-7777
Text: 239-341-7777
Email: info_fl@truckzoneparts.com
Both locations offer fast pickup and full support.
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