Snow Performance GMC/Chevy 6.6L Duramax Diesel Stage 3 Boost Cooler
| Item Number | SNO48003 |
| Price | $735.00 |
Stage-3 Boost Coolers suppress detonation so more power-producing boost and timing can be utilized. Water, with its high latent heat of vaporization, cools the intake charge and combustion. Methanol cools the charge and combustion, but also acts like an extremely high-octane fuel, and adds more oxygen to combustion. These systems contain everything needed to start making big horsepower safely.
Kit Includes
- SHO (Special High Ouptut) Pump
- 3 Quart Reservoir
- Bulkhead Fitting
- Digital Variable Controller with LCD screen
- 2 Nozzles To Cover a Wide Range of Horsepower
- All Required Hardware & Comprehensive Instructions For Installation

The Stage 3 Diesel Boost Coolers™ are some of the most comprehensive water-methanol injection kits Snow Performance makes. This kit comes with a digital variable controller which senses not only manifold boost pressure but also exhaust gas temperatures.
Using two inputs allows for the smoothest injection control. More importantly, it also keeps the EGTs as low as possible – if they begin to climb, even if the boost stays constant, the Stage 3 controller will read this and inject more water-methanol to compensate. The adjustments to the delivery on the fly are accomplished with two easy-to-use push buttons, allowing for more or less injection, or switching from both boost & EGT referenced injection (smoothest, best for towing and EGT control) to just boost referenced injection (most responsive, best for performance and racing).
If you would like to read more detailed information about water-methanol injection and it’s distinct benefits for turbo diesels Click Here
Snow Performance Diesel Stage 3 Boost Cooler 48003 works with:
- 2001 – 2010 GMC/Chevy 6.6L Duramax LB7, LLY, LBZ & LMM

Snow Performance Boost Cooler water/methanol injection systems feature the best:
- ENGINEERING – Each system has been designed and tested by Snow’s engineers to ensure reliability and robustness. The Boost Cooler™ will do what it should do for a long time. No failure prone brass or rubber is used and their component flow rates are calculated and spec’ed to work flawlessly with each other. Snow Performance pumps are designed with exclusive features to ensure reliability and strength.
- DIGITAL VARIABLE CONTROLLERS – Not just boost actuated, Snow Performance hase specially designed controllers for each vehicle application to ensure maximum power. Snow Performance has 7 different control systems, and they are each specifically mapped and designed for their applications. Most Snow Performance controllers feature true 2D maps facilitating the most correct injection and power under all conditions for the most advanced systems available.
- HIGH PRESSURE/HIGH VOLUME PUMPS – Snow Performance pumps are specially designed to deliver higher pressures and reliability. Features include: higher pressure, integrated check valve, and thermal protection for safety. Each pump is pre-tested and designed to work with methanol.
- UNSURPASSED ATOMIZATION – Along with higher pressures, Snow Performance nozzles are specially designed to spin the fluid supersonically before forcing through a venture-shaped orifice for the best atomization available. Better atomization means more power and cooling. These nozzles are also specially machined for ease of installation and clear spray pattern.
- TRAINED TECHNICAL & TUNING ADVICE – Snow Performance’s trained, knowledgeable technicians are available to help you. They have more data and hands-on experience with diesel and gasoline applications than anyone so you don’t have to guess.
- WARRANTY – Life time warranty available. Even the standard warranty is a full 2 years. Snow backs it’s systems with industry leading warranties.
- SAFETY – Snow Performance’s new SafeInjection™ is the ultimate in safety for even the most aggressively tuned applications. This ensures worry-free power in even the most demanding racing applications as well as full power on the street.
- COMPLETE KIT – When you buy a Boost Cooler™, you get a complete kit right down to the reservoir and sealant. Also, Snow Performance offers more kits for specific applications than anyone. Eliminate the guess work – get a kit for your vehicle complete with installation instructions that include vehicle specific photos and performance backed up with dyno charts.
- PROVEN PERFORMANCE – All water/methanol systems are backed with dyno data proven by numerous magazine articles and more World Records than anyone. Buy the same kit the pros and championship race teams use – buy the Boost Cooler™ from the Water-Methanol Injection Experts.
Links
- Manufacturer Product Web Page
- Product Installation Manual
- Manufacturer Product Support
- Manufacturer Warranty
Manufacturer Contact Info:
866-365-2762
Snow Performance
1017-A East Highway 24
Woodland Park, CO 80863





