2006-2012 6.6L DURAMAX PREMIUM SET OF 8 GLOW PLUGS LBZ/LMM/LML SILVERADO/SIERRA For 2006 - 2012 LLY LBZ LMM and LML Chevy / GMC Duramax Precision Engineered Superior Electrical Insulation High Thermal Conductivity will NOT fit 2005 and earlier LLY