2024 Duramax Exhaust Tip Size. The stock exhaust nozzle measures a measly 2.85 that drastically reduces exhaust flow right at the tailpipe. The factory exhaust found on your l5p duramax features numerous catalysts to include, but not limited to, a catalytic converter, diesel particulate filter (dpf), and diesel oxidation catalyst (doc) that aid in emissions control.
Upgrade your system with this 5 dpf (diesel particulate filter) back system from. Exhaust tips are available in a variety of finishes so you can choose which one looks the best on your.