A heat exchanger member contoured to fit along {HEAD ~ one side} of an exhaust pipe is retained in {TAIL ~ place} on the exhaust pipe by clamps 
is retained in
A heat exchanger member contoured to fit along { HEAD ~ one side } of an exhaust pipe is retained in { TAIL ~ place } on the exhaust pipe by clamps
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH