3.5" Exhaust Downpipe For 2017-2023 Chevy Silverado GMC Sierra L5P 6.6L

3.5" Exhaust Downpipe for 2017–2023 Chevy Silverado / GMC Sierra L5P 6.6L. This stainless steel downpipe features a mirror-polished finish and a 3.5" diameter for maximum flow, offering 20% better airflow than the factory pipe. Includes heat wrap to reduce engine bay temperatures and provide greater heat retention. Designed to not affect emissions systems, it’s ideal for competition applications. 4-bolt flange with two studs installed ensures easy installation and reliable fitment.