A valve for a fuel delivery unit has {HEAD ~ a counterholder} pressed into {TAIL ~ a housing} 
A valve for a fuel delivery unit has { HEAD ~ a counterholder } pressed into { TAIL ~ a housing }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL