A system for providing {HEAD ~ fuel} to an engine fuel delivery system and to {TAIL ~ an exhaust aftertreatment system} associated with an engine 
A system for providing { HEAD ~ fuel } to an engine fuel delivery system and to { TAIL ~ an exhaust aftertreatment system } associated with an engine
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH