Kenworth T800 Chrome Stacks & Tops

Frequently Asked Questions About Kenworth T800 Chrome Stacks & Tops

What is the difference between an exhaust stack and a stack top?

The exhaust stack is the vertical pipe that carries exhaust gases up and away from the engine, while the stack top (also called a rain cap or top cap) is the cap or curved fitting that attaches to the top of the stack. Stack tops help direct exhaust flow and can be swapped out on their own to change the look of an existing stack without replacing the whole pipe.

Will these chrome stacks and tops fit my Kenworth T800?

Most stacks and tops are sold based on diameter and length rather than truck model, so it's important to measure your existing exhaust pipe or check your truck's OEM specifications before ordering. If you're replacing a factory stack, matching the original diameter (commonly 5 inch or 7 inch) will help ensure a proper fit with your existing clamps and elbows.

What material are these stacks and tops made from, and how do I keep the chrome looking good?

Chrome stacks and tops are typically made from chrome-plated or stainless steel with a chrome finish. Because exhaust stacks are exposed to heat, road grime, and weather, regular washing with a mild soap and a dedicated chrome cleaner or polish will help prevent water spots, discoloration, and surface rust from building up over time.

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

Many owner-operators install stacks and tops themselves using basic hand tools, since most connect with exhaust clamps rather than welding. That said, working at height on the cab or hood and handling heavy pipe sections means it's worth having a second person help, and if your stack routes through the frame or cab, a shop visit may be easier and safer.

Do chrome stacks or tops affect my truck's emissions compliance?

Stack tops themselves generally don't affect emissions since they're positioned after the muffler and any emissions control components. However, any modification to your exhaust system should still allow your DPF, muffler, and other emissions equipment to function as designed, so double check that your setup keeps those components intact and unobstructed.