Brand is not important as long as it has the right reach, thread type, etc. find your year and engine below link.
opposite end of the spark plug wire from the spark plugs
the spark plug gap is .054in. for 2003 ford focus.
My 2002 Ford Focus ZX3 has a spark plug gap of .050" (1.3mm).
.30 gap for 2013 Ford Focus Se
motorcraft.com shows : 2.0 L - DOHC ( .050 inch ) 2.0 L - SOHC ( .054 inch ) for the 2000 Ford Focus
The correct spark plug for 2001 1.6 Ford Focus is NGK TR5A-10 with a gap of 1.3mm
What is spark plug gap on 2002 Ford Focus 2.0L SOHC engine? It would be in your owner's manual and it is 0.054 in.
two things you cracked head or headgasket went bad
15Nm
For the US model Ford Focus (2006), spark plugs are the only thing to replace. There are no spark plug wires. Ford recommends spark plug replacement at 100k miles.
.054
Disconnect the battery, remove the spark plug cables and boot covers, and remove the old spark plugs. Properly dispose of the old spark plugs. Next, put in the new spark plugs, reattach the spark plug boot covers and spark plug cables and reconnect the battery.