Diamond Eye Manufacturing 361039 4-Inch Aluminized DPF-Back Exhaust Kit 6.6L Duramax LMM

The Diamond Eye Manufacturing 361039 is a 4-inch aluminized steel, Diesel Particulate Filter (DPF)-back performance exhaust kit engineered for the 2007.5–2010 Chevy/GMC 6.6L Duramax LMM diesel engine. Designed as a direct bolt-on replacement for the factory exhaust system behind the DPF, this kit delivers improved exhaust flow, reduced exhaust gas temperatures (EGTs), and a more aggressive diesel exhaust note — all while maintaining full emissions compliance.

Key Features:

• 4-inch mandrel-bent tubing for smooth, unrestricted exhaust flow and maximum performance gains
• 16-gauge aluminized steel construction for a durable, cost-effective alternative to stainless steel
• DPF-back single exit configuration — replaces the factory exhaust from the Diesel Particulate Filter back
• Vented stainless steel exhaust tip included for a finished, performance look
• Utilizes OEM hanger locations for a direct, hassle-free installation
• Bolt-on installation — installs in approximately one hour with ordinary hand tools
• Fits all cab and bed length configurations for 2500 and 3500 HD trucks
• 1-Year Limited Warranty on aluminized steel kits
• Made in the USA — manufactured in Athena, Oregon

Diamond Eye exhaust kits are purpose-built for diesel performance enthusiasts seeking lower EGTs, improved fuel economy, and increased horsepower and torque without sacrificing emissions compliance. The 361039 is an ideal upgrade for stock and mildly modified LMM Duramax trucks looking for a direct-fit performance exhaust solution.