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