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Kenworth T660 Chrome Stacks & Tops
Frequently Asked Questions About Kenworth T660 Chrome Stacks & Tops
Will these chrome stacks fit my specific year model Kenworth T660?
Our chrome stacks are designed to fit Kenworth T660 models from 2008-2018. However, minor variations exist between model years, particularly in mounting bracket positions. We recommend checking your existing stack diameter (typically 5" or 6") and measuring the distance from your turbo outlet to the stack base. Most installations require minimal modification, but trucks with aftermarket exhaust systems may need additional adapters.
What's the difference between 304 and 430 stainless steel stacks, and which should I choose?
304 stainless steel contains nickel and offers superior corrosion resistance, making it ideal for trucks operating in harsh weather conditions or coastal areas. 430 stainless is more affordable and provides good durability for standard highway use. Both polish to a mirror finish, but 304 maintains its shine longer with less maintenance. For trucks running in northern states with heavy road salt exposure, we strongly recommend 304 stainless.
Can I install these stacks myself, or do I need a professional shop?
Installation typically takes 2-4 hours with basic tools including wrenches, a drill, and exhaust clamps. Most drivers with mechanical experience can complete the installation. The main challenges include aligning the stacks properly, ensuring exhaust connections are leak-free, and routing around existing components. We provide detailed instructions with each purchase, but professional installation may be worth considering if you need to modify exhaust piping or lack the proper lifting equipment.
What stack styles work best for different hauling applications?
Straight cut stacks provide maximum exhaust flow and are popular for heavy hauling applications. Curved or mitered tops direct exhaust away from the cab and trailer, reducing soot buildup on refrigerated units or car haulers. Bull hauler style stacks with expanded ends offer an aggressive look while maintaining good flow characteristics. Consider your typical loads and routes when selecting - flatbed operators often prefer curved tops to avoid cargo contamination.
How do I maintain the chrome finish and prevent discoloration?
Chrome stacks require regular cleaning to prevent exhaust residue buildup and heat discoloration. Use a quality chrome polish monthly and avoid abrasive cleaners. The area closest to the exhaust outlet will naturally develop a golden tint from heat - this is normal and can be minimized with heat shields. For best results, allow stacks to cool completely before cleaning and apply a thin coat of high-temperature wax after polishing to extend the time between cleanings.