GM Water Pump Pipe To Cooler Seal 2001-2021 GM 6.6L Duramax LB7 LY LBZ LMM LML LGH L5P 94011702
For 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 GM 6.6L Duramax LB7 LY LBZ LMM LML LGH L5Phis seal is on the end of the pipe between the water pump and the oil cooler. It can swell and be hard to reassemble properly if removed, causing a leak.