ZZ Diesel Fuel Rail Pressure Relief Valve Shim Kit
For 2004.5, 2005, 2006, 2007, 2008, 2009, 2010 GM 6.6L Duramax LLY LBZ LMM and
2007.5, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Dodge Ram 6.7L Cummins
Kit increases the pressure needed to open the pressure relief valve. This means that the available fuel rail pressure remains high, as requested by the engine computer during full-throttle driving.
Eliminates low fuel rail pressure DTC codes P1093 or P0087 (low fuel rail pressure during power enrichment) that are caused by insufficient pressure relief valve spring pressure returning fuel to the fuel tank.