Key Benefits of 2001-2004 Duramax Downpipe :
- 3″ stainless steel piping for enhanced durability
- 20% improvement in exhaust flow
- Heat-wrap keeps engine bay temperatures down
- Gasket included for secure, easy installation
- Ideal for competition or heavy-duty applications
Performance Improvement
By upgrading to this turbocharger downpipe, you will improve exhaust flow significantly. The less restrictive 3″ stainless steel design allows your engine to breathe more easily. As a result, the improved airflow reduces exhaust gas temperatures (EGTs), making the engine run more efficiently, especially under heavy loads or competitive driving conditions.