Originally Posted by
CosworthGuy
Mk 4 xr3i uses the later type key martin. Id be tempted to get a fuel cap and even see if the whole thing fits a sierra. they look pretty similar from my memory of my old 3i and im stood looking at my 3 door cossie now
I already checked that one out, the chrome part the key passes through is a bigger diameter. I could probably do with a spare 3dr petrol cap to see of I can bore it out.