Fleece Coolant Block Off Plug

Looking to upgrade your turbocharger on your Duramax 2001-2010 model? This fleece coolant block off plug provides the clearance you need for larger intake plumbing, and allows the use of non-watercooled turbochargers. It's easy to install with an O-ring seal that ensures a leak-free fit, and is an essential part of any turbo upgrade. Get the most out of your Duramax engine with this simple, but effective mod.