{HEAD ~ The PF} 34 receives exhaust from the DOC 32 and filters {TAIL ~ any soot particulates} present in the exhaust 
filters
{ HEAD ~ The PF } 34 receives exhaust from the DOC 32 and filters { TAIL ~ any soot particulates } present in the exhaust
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH