QTP 4in Weld-On 304SS AR3 Muffler

This is the QTP 4in weld-on AR3 muffler, part number 12400. It's constructed from 304 stainless steel, which is a solid choice for exhaust components because it resists corrosion well. This muffler is designed to be welded onto your existing exhaust system, giving you a way to modify or replace your current muffler with a new one that fits your needs.

The 4-inch inlet and outlet size means it's intended for larger diameter exhaust systems, often found on performance vehicles or trucks where a deeper exhaust note and improved flow might be desired. Because it's a weld-on design, you'll need welding equipment and the skills to use it, or you can have a local shop install it for you. This muffler is a well-built option if you're looking to change the sound or performance of your exhaust system.