.044 inch ( according to motorcraft . com , one of Fords websites )
.044 inch for the 3.0 liter in a 2002 Ford Ranger
On a 2002 Ford Ranger : The 2.3 liter Dual Over Head Cam four cylinder engine has ( 4 spark plugs )
On a 2002 Ford Ranger : Check the Vehicle Emissions Control Information ( VECI ) decal in the front of your engine compartment . It will show the type of spark plugs used and the spark plug gap
1 - 4 - 2 - 5 - 3 - 6
The Ford 4.0 liter V6 engine has ( 6 spark plugs )
The 2.3 liter and 3.0 liter take ( 5W-20 ) The 4.0 liter takes ( 5W-30 ) According to the 2002 Ford Ranger Owner Guide
The 2.3 liter DOHC engine in a 2002 Ford Ranger has a TIMING CHAIN
( 4 ) for the 2002 Ford Ranger 2.3 L - DOHC engine
On August 28 , 2012 I checked fordparts.com and it shows ( .054 inch spark plug gap ) for the 4.0 liter V6 in a 2002 Ford Ranger ( confirm with what is shown on the VECI , Vehicle Emissions Control Information decal in the engine compartment )
13 mm on my 2002 Ford Ranger 4.0 XLT
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
.042-.046 In.