The 2007 NGK catalogue lists the 1.1 Fiesta plug gap as 1.00mm.
The spark plug gap for Fiesta 1.4 Zetec is 0.051 inch. This is a typical gap for many of the Ford vehicles.
spark plug FR7DC2 set gap 0.9mm
0.80
1mm
.044
1...mil
All spark plug gaps are adjustable.
A/C plug # R45TS and it gaps at 0.045 That is the factory plug.
.054 inch , according to fordparts.com
When replacing the spark plugs it is important to know the size of the gap. The spark plug gaps on a 2000 Kia Sephia is .044 inches.
All V8 Chevy plug gaps in 1977 was factory .045
oem is .035 on the l6 4liter model