Mercedes GLE (4.7/5.5 V8) - Cat Delete Pipes (for OEM)**fits 2015 2019 GLE63 550 500: both the Coupe (C292) and SUV (W166)** Made with 1. 4828 stainless (T309 (1. 4828)) Cat Delete Pipes (2 options This one is for the OEM Muffler) You can find the Capristo Part here: Capristo Cat Delete Pipes These lightweight test pipes fit in place of the heavy OEM catalytic converters. Using a test pipes removes the flow restriction a catalytic converter places on an exhaust system, while increasing the horsepower.