Replaces OE Numbers: L N46-6074

Extension

• Compatible with Peterbilt 579 2022+ Semi Trucks
• Left Driver 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 Peterbilt 579 looking sharp and road-ready with this high-quality Extension Driver Side, designed specifically for 2022 and newer Peterbilt 579 semi trucks. Whether you're a fleet manager maintaining a professional appearance across your rigs or a body shop handling a collision repair, this replacement extension delivers the precise fit and finish your truck deserves. It directly replaces OE number LN46-6074, so you can trust you're getting a part built to match the original specifications of your truck.

This driver side extension is engineered for accurate fitment right out of the box, minimizing the guesswork and extra labor time that comes with ill-fitting aftermarket parts. The piece comes complete with the Peterbilt logo and a reflective vest, giving your 579 that clean, factory-correct look while also meeting visibility and safety standards on the road. The durable construction is designed to hold up against the daily wear and tear that commercial trucks face, making it a reliable long-term investment for any serious truck owner or fleet operation.

Installation is straightforward, making it a practical choice for both professional body shops and experienced owner-operators who prefer to handle repairs in their own shop. The part is designed to align seamlessly with the existing mounting points on 2022+ Peterbilt 579 models, reducing downtime and getting your truck back on the road faster. With a finish that closely matches OEM standards, this extension blends naturally with the surrounding bodywork for a clean, professional result.

At Kozak Parts, we stock this extension in our Seattle, WA warehouse and ship fast so you're not sitting on the sidelines longer than necessary. 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 get your Peterbilt 579 back to full strength without the dealer markup.