Snow Performance SNO-530 Stage 3 Diesel W/M Injection Kit Duramax 6.6L LB7-L5P

Vehicle Fitment

• 2001-2004 Chevrolet Silverado HD / GMC Sierra HD, 6.6L Duramax V8 Diesel (LB7)
• 2004.5-2005 Chevrolet Silverado HD / GMC Sierra HD, 6.6L Duramax V8 Diesel (LLY)
• 2006-2007 Chevrolet Silverado HD / GMC Sierra HD, 6.6L Duramax V8 Diesel (LBZ)
• 2007.5-2010 Chevrolet Silverado HD / GMC Sierra HD, 6.6L Duramax V8 Diesel (LMM)
• 2011-2016 Chevrolet Silverado HD / GMC Sierra HD, 6.6L Duramax V8 Diesel (LML)
• 2017-2024 Chevrolet Silverado HD / GMC Sierra HD, 6.6L Duramax V8 Diesel (L5P)

Fitment Notes

• Fits all Chevrolet and GMC 2500HD and 3500HD trucks equipped with the 6.6L Duramax diesel engine across all engine codes - LB7, LLY, LBZ, LMM, LML, and L5P
• SNO-530 uses standard red high-temp nylon tubing with quick-connect fittings - for the equivalent kit with 4AN stainless steel braided line, see SNO-530-BRD
• Not CARB approved - this system is not legal for street use in California; for a 50-state CARB-legal equivalent, see Snow Performance SNO-50100 (CARB E.O. # D-723)
• The Stage 3 controller does not write to or modify the vehicle's ECM and leaves no diagnostic signature - the factory powertrain warranty remains intact with this system installed
• This kit is recommended primarily for daily driven trucks that see heavy towing or sustained high-load operation where EGTs become a primary concern

Features

• Stage 3 2D mapped controller commands water-methanol injection based on both boost pressure AND exhaust gas temperature (EGT) simultaneously - the most sophisticated injection management available for diesel applications, delivering precise fluid delivery across all load states including empty, cruising, fully laden, and towing
• Proven to deliver 1-3 MPG increases over baseline fuel economy - the only diesel water-methanol injection system independently tested and proven to increase fuel economy in all load states
• Reduces exhaust gas temperatures by 100-300°F, enabling safer sustained towing and protecting turbocharger, EGR components, and combustion chamber components from heat-related damage
• Delivers 65+ HP gains while towing, reducing strain on the drivetrain and engine during sustained hill climbing and heavy hauling
• Controller designed to mount on the steering column or dash without any drilling, cutting, or marring of the interior - no additional gauge pod required
• Dual-function controller operates as a boost gauge, water-methanol injection controller, and EGT monitor simultaneously - all critical parameters visible in one display
• Dual-stage water-methanol engagement commanded independently for maximum precision - each nozzle stage activates progressively as boost and EGT thresholds are reached
• 2x High-Flow Solenoid Upgrade included - provides anti-siphon protection and enables dual-stage independent nozzle control for each injection point
• Improves combustion efficiency and reduces diesel particulate emissions - results in cleaner engine internals including piston tops, valves, and injectors over long-term use
• 7-gallon reservoir included - provides sufficient fluid capacity for long-haul towing without requiring refills mid-trip; designed as a true road-trip-ready installation
• 100% methanol-resistant construction throughout - compatible with water-methanol mixtures at any ratio including straight methanol

Specifications

• Part Number: SNO-530 (Manufacturer PN: 530)
• UPC: 653374977012 (per Summit Racing listing)
• System Type: Stage 3 Diesel Boost Cooler MPG-MAX Water-Methanol Injection Kit
• Controller Type: Adjustable Progressive 2D Mapped Stage 3 Controller (Boost + EGT Referenced)
• Pump: 300 PSI Extreme Environment (Sealed) UHO Pump
• Reservoir: 7-Gallon Tank (included)
• Line Type: Red High-Temp Nylon Tubing / Quick-Connect Fittings
• Nozzle Configuration: Dual Water-Methanol Nozzles (Hyper-Sonic)
• Solenoids: 2x High-Flow Solenoid Upgrade (included)
• EGT Monitoring: EGT Probe Assembly included
• Application: 2001-2024 Chevrolet/GMC Silverado/Sierra HD 6.6L Duramax Diesel (LB7, LLY, LBZ, LMM, LML, L5P)
• Warranty: 1-Year Snow Performance Limited Warranty
• Country of Origin: United States

Included Components

• 1x Adjustable Progressive Stage 3 Controller and Wiring Harness (2D Boost + EGT Mapped)
• 1x 300 PSI Extreme Environment Sealed UHO Water-Methanol Pump
• 1x 7-Gallon Water-Methanol Reservoir with Mounting Hardware and Anodized Aluminum Straps
• 1x EGT Probe Assembly
• 2x Snow Performance Hyper-Sonic Water-Methanol Nozzles
• 2x High-Flow Solenoid Upgrade
• 1x High-Flow Check Valve
• 1x Dual Nozzle Upgrade Kit
• Red High-Temp Nylon Tubing with Quick-Connect Fittings (all lengths for installation)
• Boost reference line and all required hardware
• 1x Snow Performance Decal
• Comprehensive Installation Instructions

Product Description

The Snow Performance SNO-530 is the Stage 3 Diesel Boost Cooler MPG-MAX water-methanol injection kit engineered specifically for all 2001-2024 Chevrolet and GMC Silverado/Sierra HD trucks equipped with the 6.6L Duramax diesel engine - spanning all six engine codes from the original LB7 through the current L5P. Where Snow Performance's Stage 2 diesel kits command injection based on boost pressure alone, the Stage 3 system uses a 2D mapped controller that takes both boost pressure and exhaust gas temperature into account simultaneously, enabling far more precise injection management across the entire range of engine operating conditions. This dual-parameter mapping makes the Stage 3 uniquely effective for trucks that experience variable loading - towing heavy trailers, running empty, cruising at highway speed - because the controller adjusts injection delivery to match what the engine actually needs at each moment rather than relying on boost pressure as a proxy.

The MPG-MAX designation reflects the system's primary design focus: fuel economy. Snow Performance's Stage 3 is the only diesel water-methanol injection system independently proven to increase fuel economy in all load states - empty, cruising, fully loaded, and under tow - delivering a consistent 1-3 MPG improvement over baseline by improving combustion efficiency rather than simply injecting additional fuel. At the same time, the dual-nozzle injection configuration provides 65+ HP gains under tow and reduces exhaust gas temperatures by 100-300°F, protecting turbocharger longevity, DPF health, and combustion chamber components from the heat stress of sustained heavy towing. The controller mounts on the steering column or dashboard without any drilling or panel modification, functions simultaneously as a boost gauge, water-methanol controller, and EGT monitor, and critically does not write any values to the vehicle's ECM - meaning the factory powertrain warranty remains intact.

The SNO-530 ships as a complete installation kit for nylon quick-connect plumbing, including the 300 PSI UHO pump, a 7-gallon reservoir sized for long-haul towing without mid-trip refills, dual Hyper-Sonic nozzles, two high-flow solenoids for dual-stage injection control, an EGT probe assembly, all nylon tubing and quick-connect fittings, boost reference line, and all required wiring and mounting hardware. Owners who prefer 4AN stainless steel braided line plumbing should select SNO-530-BRD. Owners in California or emissions-regulated states needing a CARB-legal equivalent should reference SNO-50100 (CARB E.O. # D-723). The SNO-530 is manufactured in the United States and backed by Snow Performance's 1-year limited warranty.