48002 Snow Performance Water/Methanol Injection Boost Cooler fits: 2001-2010 Chevy Silverado, 2001-2010 GMC Sierra. 48002 Snow Performance Water/Methanol Injection Boost Cooler Features - Water/Methanol injection cools your engine while increasing power, torque and MPGs. Injects a water/methanol mixture directly into the combustion cycle. Designed for your specific year, make and model vehicle. Run your powerplant harder for longer without threat of detonation. Decrease EGTs by up to 250°F, air intake charge by up to 200°F. Snow Performance Methanol Injection Boost Cooler. Snow Performance 48002.