Engineered specifically for 2001 through 2010 Chevrolet Silverado and GMC Sierra 2500HD/3500 trucks powered by the 6.6L Duramax V8 turbo diesel engine (LB7, LLY, LBZ, and LMM codes), the PPE CP3 Pump Inlet Fitting (Part # 113060501) replaces the restrictive factory 1/4-inch inlet fitting. The stock factory fitting creates a severe bottleneck, restricting fuel volume flow to the high-pressure CP3 injection pump and risking pump cavitation under heavy demand.

The PPE high-flow fitting features an optimized 3/8-inch inner diameter that increases fuel flow efficiency by up to 70 percent. Machined from durable, corrosion-resistant stainless steel, this direct-fit upgrade ensures your injection pump maintains a steady, abundant fuel supply to support commanded rail pressure with zero core charge.

Key Features & Benefits

• +70% Greater Fuel Flow: Enlarged internal bore eliminates factory feed restrictions, ensuring maximum volume delivery to the CP3 pump.
• Prevents Pump Cavitation: Protects the injection pump from excessive suction stress and potential starvation damage during heavy acceleration.
• High-Grade Stainless Steel: Precision-machined from robust stainless steel to resist rust, fatigue, and high-pressure under-hood conditions.
• 50-State Emissions Legal: CARB EO # D-701-27 approved for legal use across all 50 states.
• Zero Core Charge: Brand-new outright performance upgrade requiring no core deposit or core return shipping.

Technical Specifications

• Manufacturer / Brand: Pacific Performance Engineering (PPE)
• Manufacturer Part Number / SKU: 113060501
• Product Type: High-Flow CP3 Injection Pump Fuel Inlet Fitting
• Fitting Size / Hose Barb: 3/8-Inch Male Barbed Connection
• Material Composition: High-Grade Stainless Steel
• Emissions Status: 50-State CARB Compliant (CARB EO # D-701-27)
• Truck Compatibility: 2001–2010 GM Duramax (LB7, LLY, LBZ, LMM)
• Core Requirement: None
• Warranty: PPE 1-Year Limited Warranty

Vehicle Fitment & Technical Installation Notes

• 2001–2004 GM 2500HD / 3500 Duramax 6.6L (LB7)
• 2004.5–2005 GM 2500HD / 3500 Duramax 6.6L (LLY)
• 2006–2007 GM 2500HD / 3500 Duramax 6.6L (LBZ Classic)
• 2007.5–2010 GM 2500HD / 3500 Duramax 6.6L (LMM)
• Installation Tip: Clean the area surrounding the factory CP3 pump fuel feed port thoroughly before disassembly. Unthread the restrictive stock fitting, apply clean diesel fuel or approved thread sealant to the threads of the PPE 113060501 fitting, and secure the 3/8-inch supply line with a fresh worm-gear or spring clamp.