Peterbilt 567/579 Chrome Stacks & Tops

Frequently Asked Questions About Peterbilt 567/579 Chrome Stacks & Tops

What exactly are exhaust stacks and tops, and will these fit my Peterbilt 567 or 579?

Exhaust stacks are the vertical exhaust pipes that run up the back of the cab, and stack tops are the chrome caps or covers that finish off the top of those pipes. This category includes both straight and curved chrome stacks as well as top covers designed to match the specific mounting height, diameter, and body lines of the Peterbilt 567 and 579. Always check the listed diameter and length against your truck's current exhaust setup before ordering, since stack diameters commonly range between 5 and 7 inches and mounting configurations can vary by trim package and model year.

What materials are these stacks and tops made from, and how do they hold up to heat and weather?

Most chrome stacks and tops in this category are constructed from stainless steel with a mirror chrome finish, which offers good resistance to heat, road grime, and corrosion when properly maintained. The stainless base helps the chrome layer hold up longer than plated mild steel under the high temperatures exhaust components are regularly exposed to. Regular cleaning with a chrome-safe polish will help maintain the shine and prevent discoloration from exhaust heat over time.

Can I install a new stack or top myself, or do I need a shop to do it?

Many customers replace stack tops or swap in a new straight stack themselves using basic hand tools, especially when the new part is a direct match for the factory mounting clamps and bracketry. That said, jobs involving cutting, welding, or rerouting the exhaust piping itself are best left to a shop or experienced technician to ensure proper fitment, clearance, and exhaust flow. If you are unsure whether your installation is a simple swap or requires more extensive work, it is worth having a qualified technician take a look first.

Will adding aftermarket stacks or tops affect my truck's emissions compliance or warranty?

Exhaust stacks and tops are generally cosmetic and functional components that route exhaust away from the cab, but any modification to the exhaust system has the potential to affect emissions compliance depending on your state and local regulations, so it is a good idea to confirm local requirements before making changes. Additionally, modifying factory exhaust components can affect manufacturer warranty coverage on emissions related systems, so check with your dealer if your truck is still under warranty.

How do I keep my chrome stacks and tops looking new, and what if they start to rust or pit?

Routine washing and periodic use of a dedicated chrome polish will help prevent buildup of soot and road film that can dull the finish over time. If you notice small rust spots or pitting, address them early with a chrome cleaner and polish made for automotive or truck use, since neglected spots can spread and permanently damage the plating. In cases of significant pitting or peeling chrome, replacement is usually more practical than attempting a repair.