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