Rear Spring Insulator Kit, Pack of 4.
For 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
GM 6.6L Duramax LB7 LLY LBZ LMM LML L5P

Replaces# 10319

Install these rubber insulators on the lower most spring in the rear spring pack to prevent annoying spring rattle. The factory plastic insulators are prone to breaking off and these are a perfect replacement.