Mack CV/GU Truck Chrome Stacks & Tops

Frequently Asked Questions About Mack CV/GU Truck Chrome Stacks & Tops

What exactly are chrome stacks and tops, and what do they do?

Chrome stacks are the exterior exhaust pipes that route exhaust gases up and away from the cab on your Mack CV or GU model, while stack tops (also called exhaust tips or rain caps) attach to the top of the stack to finish the look and help keep moisture and debris out of the pipe when the truck is parked. Together they combine functional exhaust routing with the classic chrome appearance many Mack owners want.

Will these stacks and tops fit my specific Mack CV or GU model?

Stacks and tops are typically sold by diameter and length, so you will want to measure your existing exhaust pipe or refer to your truck's OEM specs before ordering. Mack CV and GU trucks can vary in exhaust configuration depending on year and engine setup, so double check the diameter, overall length, and mounting style listed on each product page to make sure it matches what is currently on your truck.

What material and finish are these stacks and tops made from?

Most chrome stacks and tops in this category are constructed from stainless steel with a chrome-plated finish. This combination is chosen because stainless steel holds up well under exhaust heat while the chrome plating gives the bright, polished look truckers expect. Finish quality can vary between manufacturers, so it is worth reviewing product descriptions for details on plating thickness or base material if that is a priority for you.

How do I install a new stack or top, and do I need special tools?

Installation generally involves securing the stack to the existing exhaust pipe or manifold outlet using clamps, and then fitting the top onto the stack, often with a friction fit or a small mounting bracket. Basic hand tools are usually sufficient for most installs, but exact steps can differ depending on your truck's current exhaust setup. If you are unsure, having a qualified diesel technician handle the installation helps ensure a secure, leak-free fit.

How do I keep chrome stacks and tops looking good over time?

Regular washing with a mild soap and water solution, followed by a dedicated chrome polish, will help maintain shine and prevent pitting or discoloration caused by road salt, exhaust residue, and weather exposure. Avoid harsh abrasive cleaners or pads, since these can scratch the chrome surface and dull the finish over time.