{HEAD ~ Its face side} which is averted from the glow plug shaft, therefore, protrudes beyond {TAIL ~ the free end} of the glow rod and is pressed onto the face of the filter body 
protrudes beyond
{ HEAD ~ Its face side } which is averted from the glow plug shaft , therefore , protrudes beyond { TAIL ~ the free end } of the glow rod and is pressed onto the face of the filter body
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH