Peterbilt 579 2022+ Parts & Accessories

Parts and accessories for the 2022+ Peterbilt 579

The new-generation 579 looks familiar from the doors back, but the front of the truck is a different story. With the 2022 redesign, Peterbilt gave the 579 a narrower, sharper hood and grille, longer side air intakes and a bumper with its own lower grille section and new aero closeouts. For owners and body shops, that means one thing: most front-end, lighting and bumper components from a 2012-2021 truck will not fit the new one. Below we explain how to identify the body style, what to check before ordering and how to choose the right parts in each category.

Year or body style: what really decides fitment

Ordering 2022 Peterbilt 579 parts by model year alone is the mistake that costs owners the most time. Some trucks titled as 2022 were built with the earlier body, while the new design carries on through 2023, 2024 and later builds. So before you add anything to the cart, take a look at the front of the truck:

• The hood is slimmer at the nose, and the grille is narrower and more sharply angled.
• The side air intakes run noticeably farther along the hood.
• The headlight housings have a new shape and different mounting points.

If all three match, you are shopping in the right place. If you are not sure, call us with the VIN or send a clear photo of the front end, and our parts team will confirm fitment before the order ships.

Details to check before you order

Once the body style is settled, a few small details decide whether a part goes on the first time. Step panels, fairing extenders, fog lamps and bumper extensions are made as driver side, passenger side or a set, and it is easy to grab the wrong one when you are working from a damage report. Bumpers and guards also differ in height and in their cutouts for fog lamps, tow hooks and radar.

Factory safety equipment needs extra attention. Many trucks of this generation carry a radar sensor for adaptive cruise and collision mitigation. A blocked or misaligned sensor can switch those systems off, so pick a bumper or guard that already has the correct opening instead of cutting one in the shop. 

Collision repair: what usually gets replaced together

Front-end damage on this truck rarely stops at one piece. A low-speed corner hit tends to take out the bumper end or extension, its bracket, the seal that closes the gap to the fairing and often the fog lamp mounted in the bumper. A harder impact reaches the lower step panel and the bracket behind it. Ordering the whole group at once saves a second freight.

Shops and fleet managers who buy body parts for a 2022 Peterbilt 579 for several units at a time can contact us about shipping discounts on bulk orders. We work with body shops every day and know which combinations come up after typical accidents, so we can help you put together a complete list instead of finding the missing bracket after the panel is already on.

Grille guards and mounting brackets

On routes through deer and elk country, a grille guard usually costs less than one repair of the hood, grille, radiator and headlights after an animal strike. Of all the 2022 Peterbilt 579 accessories we offer, this is the one that pays for itself fastest. The guard mounts through model-specific brackets, so the brackets must match both the guard and the mounting points of this truck. Check the radar opening as well. If you are in the Seattle area, our team can install a deer guard at our SeaTac warehouse.

Cooling system parts

The redesign changed the grille opening and the air path behind it, and the radiator for this generation is built around that. A new radiator should not go in next to a tired water pump: a weeping seal or worn bearing can lead to overheating that damages the new core, and you will be back in the shop. If the pump has high mileage, replace it at the same time, flush the system and refill with the coolant your engine maker specifies. The side air intake grilles on the hood belong to the same airflow path. A cracked or missing grille lets road debris and snow into the intake area, so it is worth replacing even when the damage looks cosmetic.

Aftermarket or dealer?

All parts in this collection are aftermarket, not OEM, and we are not affiliated with PACCAR, Peterbilt or Kenworth. They are built to factory dimensions and mounting points. For panels, lighting, bumpers and protection, aftermarket truck parts for the 2022 Peterbilt 579 do the same job at a lower price and without waiting on a dealer’s schedule. The only extra step is confirming fitment, which is why we put those checks at the top of this guide. Everything listed on tacoma-truckparts.com is stocked in our own warehouse, so what you see online is ready to ship.

FAQ

Will front-end parts from a 2020 Peterbilt 579 fit a 2023 truck?

In most cases, no. The hood, grille, headlights, bumper components and side intakes were redesigned for the new generation. Some cab and sleeper items may carry over, but check the fitment line in each listing.

Can I keep adaptive cruise control with a grille guard?

Yes, as long as the guard has an opening that matches the position of your radar sensor and the sensor is not covered or moved.

How do I know a part is correct before it ships?

Give us the VIN, the number from the damaged part or a photo of the area. Our team will check it against the listing and confirm before packing.