PL= Platinum Electrode threat reach 26.5mm
F= 14.0mm thread, 1.25mm pitch, 19.0mm reach, 16.0mm hex,
R= resitor
5= heat rating
11= pre set spark plug gap
the ones listed for the clio 172 sport are
PFR6E 11
nearly the same just a diferent heat rating Prob not mater to much and they don't state the electrode thread length for the PFR6E-11 but still might be the same ?? take the old ones out and compare them