.044 inch ( according to motorcraft.com ) but check your engine compartment
decal
.044 inch
( 8 ) sparkplugs for the 2.3 liter 4 cylinder engine in a 1997 Ford Ranger with Fords twin plug ignition system
V6 engine in Ford Ranger firewall 3 - 6 2 - 5 1 - 4 front
.044 - 2.3L .050 - 3.0L .054 - 4.0L
The 2.3 liter in the Ford Ranger from 1989 to 1997 and the 2.5 liter from 1998 to 2001 use ( 8 ) spark plugs
5/8 plug socket
.054 inch ( .052 to .056 inch )
Bottom of the engine.
The spark plug number that is in my 2003 Ford Ranger XLT is: AGSF34FP - Motorcraft.
In a 1997 Ford Ranger : The 2.3 liter four cylinder with Fords twin plug ignition system has ( 2 coil packs ) and ( 8 ) spark plug wires for the eight sparkplugs The 3.0 liter and the 4.0 liter V6 engines have ( 1 coil pack ) and ( 6 ) spark plug wires for the six spark plugs
coil-------3-----4 pack------2-----6 plug-------1-----5
The spark plug gap for a 1983 Ford Ranger 2.8L is .044"