2004.5-2010 Duramax PCV/ CCV Breather Reroute Kit (LBZ-INT-A008)2004. 5 2010 Duramax PCV CCV Breather Reroute Kit (LBZ INT A008) This kit fits the 2004. 5 2010 Duramax LLY LBZ LMM turbo intake mouthpiece. Prevent oil from contaminating your intake, which can promote carbon and gunk buildup in your intake manifold. Reduce the chance of charge pipe boot failure and the possibility of uncontrolled engine revs or engine runaway during competition use. Keep puddles of oil out of your intercooler with Dirty Diesels