DieselR 2001-2007 Duramax Turbo-Back Exhaust System LB7/LLY/LBZ 2500/3500

The DieselR exhaust system is built for Chevy Silverado and GMC Sierra 2500/3500 owners who demand a clean fit, stronger flow, and long-lasting reliability. Crafted from 4-inch and 5-inch heavy-duty aluminized and T409 steel, this system improves exhaust performance, reduces EGTs, and delivers a deep, refined tone under load.

Each Dieselr exhaust is mandrel-bent for smooth, unrestricted flow and precision-welded for durability. The aluminized finish resists rust, corrosion, and heat fatigue—perfect for work trucks and daily-driven Duramax platforms. It mounts directly to OEM hangers for a secure, factory-style fit that installs easily without cutting or welding.

Dieselr systems are tested on real 6.6L Duramax trucks for verified fitment and field performance. This is exhaust engineering done right—built strong, built simple, built to last.

Key Features

• Mandrel bends for smooth, efficient flow
• OEM hanger alignment for clean installation
• Corrosion-resistant finish for durability in harsh conditions