Compare Peterbilt 579 replacement headlights in black and chrome finishes, including projection and integrated LED options. Match the listed application, installed housing and required side before choosing.
Compare the low- and high-beam light source separately from halo, position-light and sequential turn-signal features. Check the selected product’s connections, operating voltage and package contents before ordering.
Start with fitment and the headlight already installed, then compare the lighting design and finish. A replacement assembly and a bulb for an existing housing are different purchases.
Use the truck’s model year and the original headlight’s shape, part number, mounting points and connections. Compare these with the exact product’s application and original-equipment requirements, especially if the truck has previously been modified.
Read the main-beam specification rather than relying on the styling name. The black projection assembly with LED position lighting and sequential signal lists an H9 low-beam bulb and H1 high-beam bulb. Integrated LED assemblies use their own low- and high-beam light sources.
Compare the listed halo, light-bar, position-light and turn-signal functions alongside the main beams. Select the corresponding Driver or Passenger option in the desired black or chrome finish to match the other side.
Review the selected assembly’s voltage, wiring instructions and contents list. Some listings include a removable load resistor with product-specific troubleshooting notes. Follow those instructions, test the lighting functions before final installation and check headlight aim.
Use the truck’s year and the original assembly’s shape, part number and connections. The selected headlight’s application list identifies the model years and equipment it supports.
Read which functions the listing assigns to each light. Compare the main low- and high-beam specification separately from the position light, daytime running light or turn signal, and review their installation connections.
Choose the corresponding Driver and Passenger configurations in the same listed finish and lighting style. Use the selected variation’s details and package contents to plan the order.
The selected product or variation defines the quantity. Compare its contents list to see whether it supplies one side, both sides or a separate component.
A bulb replacement services the housing already on the truck. Identify that housing’s bulb type and the low-beam, high-beam or other position before choosing a bulb; an assembly replacement is a separate product selection.
Do not assume every 579 uses the same headlight. The projection and halo LED products reviewed here list 2012–2021 Peterbilt 579 applications. Check the exact listing against your truck’s year and installed equipment rather than extending that range to a newer model.
No. An assembly can combine replaceable low- and high-beam bulbs with LED position lights or turn signals. Compare the main light source, specified bulb types and operating voltage for the exact product.
