Replaces OE Numbers: L N46-6074, R N46-6074 R
Extensions Set
- Compatible with Peterbilt 579 2022+ Semi Trucks
- Left Driver & Right Passenger Side
- Comes with Logo 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 2022 and newer Peterbilt 579 looking sharp and road-ready with this premium Extensions Set, a direct replacement for OE numbers L N46-6074 and R N46-6074 R. Designed specifically for the Peterbilt 579, this set delivers a precise, factory-style fit that eliminates the guesswork and frustration of trying to adapt generic parts to your rig. Whether you're a fleet manager maintaining a professional appearance across multiple trucks or an owner-operator who takes pride in every detail, this extensions set is built to meet your standards.
This complete set includes both the left driver side and right passenger side extensions, so you get everything you need in a single order. The set also comes with the Peterbilt logo and a reflective vest, adding an authentic OEM-style finish that looks great and helps keep your truck compliant and visible on the road. The durable construction is engineered to withstand the demanding conditions of long-haul and regional trucking, holding up against vibration, weather, and the everyday wear that comes with life on the highway.
Installation is straightforward thanks to the direct-fit design that mirrors the original equipment specifications. Body shops and experienced owner-operators alike will appreciate how cleanly this set lines up with existing mounting points on the 2022+ Peterbilt 579, reducing labor time and getting your truck back on the road faster. No cutting, drilling, or major modifications required — just a clean, professional finish from the moment you bolt it on.
At Kozak Parts, we stock this Extensions Set right here in our Seattle, WA warehouse, so you can count on fast shipping to get your parts delivered quickly and minimize downtime. Please make sure to provide a valid phone number at checkout so the delivery carrier can reach you and ensure smooth, prompt delivery. Order today and give your Peterbilt 579 the quality replacement parts it deserves.