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Peterbilt 388 Chrome Stacks & Tops
Frequently Asked Questions About Peterbilt 388 Chrome Stacks & Tops
What are the differences between 304 and 430 stainless steel stacks for my Peterbilt 388?
304 stainless steel offers superior corrosion resistance and maintains its shine longer, making it ideal for trucks exposed to road salt and harsh weather conditions. 430 stainless steel is more budget-friendly and still provides good durability, but may require more frequent polishing to maintain its chrome-like appearance. Most professional drivers prefer 304 for long-haul applications, while 430 works well for trucks with lighter duty cycles or those operating in milder climates.
Will these chrome stacks fit my specific year Peterbilt 388, and what modifications might be needed?
Our chrome stacks are designed to fit Peterbilt 388 models from 2006-2015. For 2006-2010 models, the stacks typically bolt directly to existing mounting points. For 2011-2015 models, you may need to use adapter brackets (sold separately) due to slight frame modifications Peterbilt made. Always verify your exhaust pipe diameter before ordering - most 388s use 5-inch pipes, but some specialty configurations may have 6-inch systems.
How difficult is the installation process, and what tools will I need?
Installation typically takes 2-4 hours for someone with basic mechanical skills. You'll need a socket set (including 9/16" and 5/8" sockets), torque wrench, penetrating oil for stubborn bolts, and potentially a sawzall if trimming is required. The most challenging part is usually removing old, corroded clamps and brackets. We recommend having a helper to position the stacks while you secure them. Professional installation usually runs $150-300 if you prefer to have a shop handle it.
What stack styles look best on the Peterbilt 388, and how do they affect performance?
Curved stacks complement the 388's aerodynamic design and are most popular for their classic look. Straight stacks provide a more aggressive appearance and are easier to clean. Regarding performance, miter-cut tops create the iconic sound but may allow rain entry, while turn-out tops direct exhaust away from the trailer but can accumulate soot on the cab. Bull-hauler style stacks with minimal baffling provide the best exhaust flow but are louder and may not meet noise regulations in some areas.
How do I maintain the chrome finish and prevent discoloration from exhaust heat?
To maintain your chrome stacks, clean them weekly with a quality chrome polish and microfiber cloth. For heat discoloration (blueing) near the base, use a specialized stainless steel heat tint remover. Apply a high-temperature wax every month to create a protective barrier. Avoid using abrasive cleaners or steel wool, which can scratch the finish. If you notice persistent discoloration, check for exhaust leaks at the connections, as these create hot spots that accelerate tarnishing.