Industrial Injection Pressure Relief Valve Block Off 07.5-18 Dodge 6.7L Cummins / 04.5-10 GM Duramax. Fits: 2004.5 - 2005 Chevy/GMC 6.6L LLY Duramax; 2006 - 2007 Chevy/GMC 6.6L LLY & LBZ Duramax; 2007.5 - 2009 Ram 6.7L Cummins; 2007.5 - 2010 Chevy/GMC 6.6L LMM Duramax; 2010 - 2018 Ram 6.7L Cummins.