Description: This Mel's Turbo Downpipe is a great fit for 2017 - 2022 GMC/Chevrolet HD 6.6L Duramax. If you want to boost your vehicle's performance, improve exhaust flow, and enhance the engine sound, this is the ideal upgrade! It comes with high - quality heat wrap and mandrel bends. It's an affordable minor upgrade that's easy to install. Part Number: A40101. Features: 3.5' Turbo direct pipe, includes heat wrap, machine flange, direct bolt - on, improved airflow and performance, 4 - bolt flange. Note: Custom Tuning is required.

Using this downpipe is straightforward. First, make sure your vehicle is turned off and cooled down. Then, you can directly bolt the downpipe onto the appropriate part of your Duramax engine as it's a direct bolt - on design. Remember, custom tuning is necessary for it to work properly. When it comes to maintenance, regularly check the heat wrap for any signs of wear or damage. If you notice the heat wrap is getting old or torn, it's a good idea to replace it. Also, keep an eye on the bolts to ensure they are tightened. This will help maintain the improved airflow and performance of your vehicle.