Wellman Glow Plugs 6.6L DURAMAX Diesel 2006-2011 LLY & LBZ Fast Start Glowplugs (Set of 8) GMC & Chevy 3500 & 2500 For the 2006-2012 Duramax Engines These plugs heat up 20% faster and get 100 deg. hotter than the original plugs 1 Year Warranty Set of 8