{HEAD ~ Cylinder head} 15 also houses {TAIL ~ intake and exhaust valves} 8 which allow fuel mixture to enter and exhaust gases to exit combustion chamber 19 
houses
{ HEAD ~ Cylinder head } 15 also houses { TAIL ~ intake and exhaust valves } 8 which allow fuel mixture to enter and exhaust gases to exit combustion chamber 19
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH