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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2
and professional-grade installs
enhancing power and efficiency
Maximized Airflow: 3
This service grants you the capability to fine-tune your vehicle’s performance
It’s built specifically for the 2017–2019 L5P Duramax equipped with the T87A module
GDP Downpipe Back Exhaust - Single (2020-2023 GM 2500/3500 6.6L Duramax L5P) 10-12_CUMMINS_6.7 and professional-grade installsGDP Downpipe Back Exhaust Single (2020 2023 GM 2500 3500 6. 6L Duramax L5P) Built for Strength. Engineered for Performance. Upgrade your exhaust system with the GDP Downpipe Back Exhaust, designed for 2020 2023 GM 2500 3500 6. 6L Duramax L5P. Built from T409 stainless steel, this system enhances airflow, durability, and horsepower, making it a must have for serious truck owners. Why Choose GDP? Heavy Duty Construction Mandrel bent T409 stainless steel