PPE 3" STAINLESS STEEL DOWN PIPE 117000500 | 2004.5-2010 6.6L Duramax LLY/LBZ/LMM

Upgrade the restrictive factory downpipe on your 2004.5–2010 GM 6.6L Duramax with the PPE 117000500 3-Inch Stainless Steel Downpipe. Designed to replace the crushed oval factory downpipe, this high-flow upgrade features a smooth mandrel-bent design that improves exhaust flow, reduces restriction, and enhances overall exhaust system efficiency.

Constructed from premium 304 stainless steel, this downpipe is engineered for long-lasting durability in harsh diesel operating environments. To further improve thermal management, the downpipe is spiral wrapped with titanium woven heat wrap and secured using stainless steel clamps. This helps reduce underhood temperatures while maintaining exhaust heat within the system.

Whether you're replacing a damaged factory component or upgrading your exhaust system, this downpipe delivers improved flow and corrosion resistance while maintaining emissions compliance.

Features:

• 3-inch mandrel-bent design for improved exhaust flow
• Replaces the restrictive factory crushed downpipe section
• Premium 304 stainless steel construction
• Titanium woven heat wrap included
• Stainless steel retaining clamps
• Improves exhaust system efficiency
• Corrosion-resistant construction for long service life
• Direct-fit installation

Emissions Compliance:

• CARB Executive Order: D-701-30

Fitment:

• 2004.5–2005 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax LLY
• 2004.5–2005 GMC Sierra 2500HD/3500HD 6.6L Duramax LLY
• 2006–2007 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax LBZ
• 2006–2007 GMC Sierra 2500HD/3500HD 6.6L Duramax LBZ
• 2007.5–2010 Chevrolet Silverado 2500HD/3500HD 6.6L Duramax LMM
• 2007.5–2010 GMC Sierra 2500HD/3500HD 6.6L Duramax LMM