2004.5-2010 Duramax HSP Diesel PCV Reroute Kit (049-HSP)2004. 5 2010 Duramax HSP Diesel PCV Reroute Kit (049 HSP) The HSP PCV Reroute kit allows you to reroute the restrictive factory hoses. Our free flowing design provides ventilation to eliminate oil residue going into your turbocharger. This kit will prolong the life of your turbo, also eliminates the oil residue that the factory system leaves in your engine bay. Let your engine breathe with the high quality standards of HSP's PCV reroute kit.