Snow Performance Stage 3 Boost Cooler Chevy/GMC Duramax Diesel Water Injection Kit

If you're looking to keep your Chevy or GMC Duramax diesel running cooler and stronger, especially when you're pulling heavy loads, this Stage 3 Boost Cooler from Snow Performance is a solid option. It's a water-methanol injection system designed to directly address high exhaust gas temperatures (EGTs) and improve overall engine performance for a range of Duramax applications, including models like the Silverado 2500 HD and Sierra 3500 HD.

What sets this kit apart is its advanced 2D mapped controller. It actively monitors your boost pressure and EGTs, automatically adjusting the water-methanol injection to maintain significantly colder inlet air temperatures. This not only helps protect your engine by reducing EGTs by up to 300 degrees, but it also leads to cleaner engine components and can even improve fuel economy. You can expect a notable horsepower increase, around 65 HP, which makes a big difference when climbing hills with a trailer. The controller itself is designed for easy, non-invasive mounting on your steering column or dash, functioning as a boost gauge, controller, and EGT monitor all in one, so you don't need extra gauges or to drill into your interior. Plus, it's designed to leave no trace, helping to keep your truck's warranty intact.

This kit comes with a 7-gallon tank, making it ready for long trips right out of the box. It's a great choice for daily-driven Duramax trucks that frequently handle heavy towing and are prone to dangerously high EGTs. If you need a CARB-approved system for California or other states with strict emissions regulations, Snow Performance offers a separate 50-state legal version.