Diesel Truck Exhaust Stacks & Kits

What Do Diesel Truck Exhaust Stacks Do?

Diesel truck exhaust stacks move your exhaust outlet from under the truck to a vertical pipe behind the cab or in the bed. Routing exhaust up and away keeps it clear of the cab and bed. It also raises the outlet above water and mud, which helps if you drive through job sites, trails, or flooded roads.

Truck exhaust stacks are one part of your full exhaust system. The stack connects to your existing piping, so its diameter and routing need to match what's already on the truck. If you're planning a bigger upgrade, browse our headers and exhaust parts to plan the rest of the system.

Not sure how your current setup is laid out? Our types of exhaust systems guide explains how different layouts carry exhaust from the engine to the outlet. Use it to decide where you want your stack to exit and how it ties into the pipe you already have.

What Size Exhaust Stack Pipe Do You Need?

Match your stack diameter to the exhaust pipe it connects to, then pick a length that clears your cab or bed. According to JEGS tech content, diesel exhaust systems commonly run large diameters, up to 6 in. on high-horsepower applications. Measure your existing pipe before you order so you don't end up hunting for an adapter.

Here's a quick look at the stack sizes you'll find in this category:

• AP Exhaust straight-cut aluminized steel stack pipe with a 4 in. diameter, in 48 in. and 60 in. lengths
• Dynomax aluminized exhaust stack pipe with a 5 in. outside diameter
• Dynomax aluminized stack pipe with a 3-1/2 in. inside diameter

Check whether a listing gives inside or outside diameter before you buy. The two numbers measure different surfaces of the pipe, and that affects how your stack connects. If you're unsure, measure the pipe on your truck and compare it to the same type of spec.

Chrome vs. Aluminized Exhaust Stacks: Which Finish Should You Pick?

Pick chrome exhaust stacks if a polished look comes first, and an aluminized exhaust stack if you want a plain steel finish. The stacks in this category come in both finishes, so you can match your stack to the rest of your truck. Think about your grille, trim, and wheels, since your stacks sit at eye level.

Chrome stacks give your truck a bright finish that stands out from across the lot. Jones Exhaust offers the JTS300 Full Boar 3 in. Truck Stacks in chrome with shields. You'll also find chrome stack pipes from Dynomax, plus chrome angle-cut and pigtail stack pipes from AP Exhaust.

Aluminized steel is steel with an aluminum-based coating. You can paint it to match your truck or leave it bare for a work-truck look. AP Exhaust and Dynomax both offer aluminized stack pipe, including a Dynomax pipe listed for 2007-2009 Dodge Ram 2500/3500 trucks with the 6.7L.

Which Stack Cut Style Fits Your Build?

Choose your cut style based on the look you want and how you want the outlet to finish. Straight-cut tops give a clean, squared-off end. An angle-cut stack has a slanted top, while a pigtail stack pipe curves at the top.

Each style changes the profile of your truck, so picture it from the side before you order. AP Exhaust carries all three styles, with straight-cut aluminized pipe and chrome angle-cut and pigtail options.

If you're matching a pair, order the same cut style and finish for both sides. It's also smart to check the stack length with the cut style, since a slanted or curved top changes the finished height.

Stacks aren't the only way to finish your exhaust. If you'd rather keep the outlet under the truck, compare exhaust tips and exhaust turndowns for a lower-profile setup. Our exhaust tips for your truck guide walks you through sizing and style choices.

How Do You Mount and Install Bed Stacks?

Bed stacks typically run up from the exhaust pipe through the bed, often near the front corners behind the cab. Brackets or clamps then hold the stack upright. Always follow the instructions for your specific stack or exhaust stack kit, since mounting points vary by truck.

Before you cut or drill, confirm fitment. Use the Add a Vehicle tool on this page to guarantee parts fit your truck.

Then read the product details so you know which pieces come with the stack and which you'll need to source. If anything is missing, order it with your stack so your install doesn't stall halfway through.

Plan the route from your existing pipe to the stack, and check clearance around the bed, cab, and any wiring along the way. Need other parts to finish the job? Browse our full lineup of cutouts, turndowns and exhaust tips, then shop diesel truck exhaust stacks now.