Peterbilt 567/579 Elbows, Piping & Comp.

Frequently Asked Questions About Peterbilt 567/579 Elbows, Piping & Comp.

What is included in this category?

This category covers exhaust system components for Peterbilt 567 and 579 models, including exhaust elbows, piping sections, and related connecting components used to route exhaust from the engine or DPF/muffler assembly up through the stack. These parts are typically made from stainless or aluminized steel and are designed to replace factory exhaust piping that has rusted, cracked, or been damaged.

Will these parts fit my truck without modification?

Most elbows and piping listed in this category are designed to match OEM specifications for the Peterbilt 567 and 579, so they should install using the same mounting points and clamps as the factory pieces. However, exhaust configurations can vary based on engine model, aftertreatment system, and stack height, so it is important to confirm the diameter, angle, and length of the part against your truck's existing setup or your build sheet before ordering.

What material and finish options are available?

You will typically find these components in aluminized steel, which offers good heat and corrosion resistance at a lower cost, and stainless steel, which holds up longer against rust and road salt and often carries a polished or mill finish. Stainless components generally cost more upfront but tend to last longer, especially in regions with harsh winters or high road salt exposure.

How do I know if I need an elbow or a straight pipe section?

Elbows are used anywhere the exhaust path changes direction, such as where the pipe turns from horizontal to vertical near the stack, while straight piping sections connect elbows, mufflers, and stacks over longer runs. If you're replacing a damaged section, it helps to measure the angle and length of the original part, or check your truck's parts diagram, to make sure you order the correct piece rather than assuming a straight section will work in place of an elbow.

What tools or steps are involved in installing a replacement elbow or pipe?

Installation generally involves loosening and removing the exhaust clamps or bolted flanges on either side of the section being replaced, removing the old component, and securing the new one in the same position with the same hardware. Basic hand tools such as wrenches or sockets are usually sufficient, but because these components carry hot exhaust gases, it's important to let the system cool completely before working on it and to inspect gaskets, clamps, or seals for wear and replace them if needed to prevent leaks.