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