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