Looking for a way to eliminate those pesky rear housing coolant leaks on your Duramax 2001-2017 truck? Look no further than the XDP XD344 Billet Coolant Block Off Plate! This nifty little device is made of billet aluminum construction and features a black anodized finish for added durability. Plus, it comes with a built-in O-ring seal for a tight, leak-proof fit. No more mess, no more fuss! Get the XDP XD344 Billet Coolant Block Off Plate today and say goodbye to those troublesome coolant leaks for good!