Cab Cabin Sleeper Fairing Extender Bottom Lower
- Compatible with Peterbilt 579 2013-2021
- This bottom lower sleeper fairing extender fits the left driver side with OEM-level precision and durability.
- Heavy-Duty Build for Long-Term Use – Manufactured from aluminum, to withstand harsh road conditions and provide long-lasting protection and aerodynamic performance.
- Easy Installation – Direct bolt-on replacement with no modifications needed. Ideal for both professional mechanics and DIY truck owners.
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Comes with Logo, 2x 22" Windshield Wipers, and Reflective Vest
Please note in order to process the shipping promptly Buyer must provide a VALID phone number where they can be reached and contacted by the delivery carrier. Failure to do so may result in delayed shipment. Seller is not liable for any expense associated with failure to provide contact information on Buyers behalf. Seller reserves the right to hold the shipment until the contact with Buyer has been established to cleat all shipping details. Please make sure to provide your full and detailed shipping address information! Contact us if you want to pick up the item or if you want to know more about delivery options in Washington.
Keep your Peterbilt 579 looking sharp and aerodynamically efficient with this Cabin Lower Sleeper Fairing Extender for the driver side. Designed specifically for 2013-2021 Peterbilt 579 models, this bottom lower sleeper fairing extender is built to restore the clean lines and functional aerodynamics your truck depends on. Whether you're a long-haul owner-operator, managing a fleet, or running a body shop, this is the replacement part that gets the job done right the first time.
Crafted from heavy-duty aluminum, this sleeper fairing extender is built to withstand the harsh demands of life on the road. The durable construction resists corrosion, road debris impact, and the wear that comes with thousands of miles of use. The OEM-level fitment ensures a precise match to your 2013-2021 Peterbilt 579, eliminating the frustrating gaps, misalignments, or drilling modifications that come with inferior aftermarket parts. This is a direct replacement for the left driver side position, so you can order with confidence knowing it will fit exactly where it needs to.
Installation is straightforward, making it a practical choice for both professional body shop technicians and experienced owner-operators who prefer to handle repairs themselves. The part aligns with existing mounting points for a clean, secure fit that looks factory-fresh once installed. Restoring your fairing extender not only improves the appearance of your rig but also helps maintain fuel efficiency by preserving the aerodynamic profile of your sleeper cab.
At Kozak Parts, we stock this Peterbilt 579 lower sleeper fairing extender and thousands of other semi truck body parts ready to ship fast from our Seattle, WA warehouse. That means less downtime for your truck and more miles on the road where it belongs. Order today and get the quality aftermarket replacement your Peterbilt deserves.











