Maximize the performance of your 2020-2025 GM Duramax 6.6L L5P by upgrading it's intercooler pipes. The stock intercooler pipes are often restrictive, limiting airflow and reducing overall engine efficiency. Fortunately, our selection of aftermarket intercooler pipes offer smoother, more direct airflow to your engine, improving throttle response, power delivery, and performance. Additionally, we offer a range of accessories, such as clamps and couplers, to ensure a secure and leak-free connection throughout your system. Pair these intercooler pipes with an upgraded Intercooler for even greater performance gains in your GM 2500HD/3500HD. GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.Â