Snow Performance SNO-500 Stage3 Diesel Boost Cooler for 1989-2007 5.9L Cu

Vehicle Fitment

• 1989-1993 Dodge D250 (5.9L I6 Cummins Turbo Diesel)
• 1989-1993 Dodge D350 (5.9L I6 Cummins Turbo Diesel)
• 1994-2007 Dodge Ram 2500 (5.9L I6 Cummins Turbo Diesel)
• 1994-2007 Dodge Ram 3500 (5.9L I6 Cummins Turbo Diesel)
• 1989-1993 Dodge W250/W350 (5.9L I6 Cummins Turbo Diesel)

Features

• Stage 3 Diesel Boost Cooler water/methanol injection system
• Advanced 2D-mapped controller scales injection by boost + EGT
• Reduces intake air temps & exhaust gas temperatures 100-300°F
• Can deliver 50-100+ HP gains under load with proper tuning
• Improves fuel combustion and fuel economy (1-3 MPG gains)
• Includes EGT probe for active exhaust temp monitoring
• 3 Snow Performance Hypersonic™ nozzles and check valves
• 300 PSI Extreme Environment Ultra High Output pump included

Specifications

• Part #: SNO-500 - Stage 3 Diesel Boost Cooler
• Controller: 2-D mapped digital controller with display
• Pump: 300 PSI UHO pump for high-pressure injection
• Tubing: 20' red high-temp nylon tubing with quick-connects
• Tank: 7 gallon reservoir included
• Fittings: Quick-connect or optional 4AN braided line fittings
• Nozzles: Triple Hypersonic™ injection nozzles
• Application: Designed for 5.9L Cummins diesel engines

Included Components

• 1x Digital 2D-mapped controller (boost + EGT activation)
• 1x 300 PSI Extreme Environment UHO pump
• 1x 7 gallon reservoir tank
• 3x Snow Performance Hypersonic™ nozzles
• 1x EGT probe assembly
• High-temp tubing & quick-connect hardware
• Boost line, fittings, decals, and detailed install instructions

Product Description

The **Snow Performance SNO-500 Stage 3 Diesel Boost Cooler** is a high-end water/methanol injection system engineered for **Dodge trucks powered by the 5.9L Cummins turbo diesel** (1989-2007). Using an advanced **2D-mapped controller**, the system proportionally injects water/methanol based on both boost pressure and exhaust gas temperature (EGT), delivering exceptional cooling, power, and efficiency under heavy load. Typical results include up to **100-300 °F EGT reduction**, improved combustion quality, and horsepower gains of **50+ or more** when properly tuned.

Designed for enthusiasts who tow, haul, or push their diesel trucks hard, the Stage 3 kit includes a **300 PSI Extreme Environment UHO pump**, **three Hypersonic™ nozzles**, a large **7 gallon reservoir**, and an **EGT probe** to actively monitor temperatures during operation. Red high-temperature nylon tubing and quick-connect fittings simplify installation in the engine bay. The controller's user-adjustable mapping lets you tailor the injection profile to your engine's needs, helping achieve better fuel economy, cleaner combustion, and lower engine stress on long drives or heavy pulls.