In a 2000 Ford Ranger :
( the 2.5 liter four cylinder engine , which was the only four cylinder engine offered from the factory for a 2000 Ford Ranger , not like the 2001 model when they started with the 2.3 liter DOHC later that model year )
That's Fords twin plug ignition system to help reduce emissions
There are three engines available. If it's a 6 cylinder engine, 6 spark plugs. If it's the 4 cylinder engine, 8 spark plugs.
If you have computer access you can surf to AutoZone.com and type in your vehicle specific information. Their system will have most of the part numbers and products listed that are for your specific vehicle (including the plugs). You don't have to download anything and it is free.
In a 2011 Ford Ranger : The 4.0 litre Single Over Head Cam , V6 engine has : ( 6 spark plugs )
On a 2002 Ford Ranger : The 2.3 liter Dual Over Head Cam four cylinder engine has ( 4 spark plugs )
On a 2005 Ford Ranger : The 2.3 liter Dual Over Head Cam , four cylinder engine has : ( 4 spark plugs )
There are ( 6 spark plugs ) on the Ford 4.0 liter V6 engine
The Ford 4.0 liter V6 engine has ( 6 spark plugs )
The freeze plugs on the 1994 Ford Ranger have locations that vary slightly depending on the engine choice. On most trucks the freeze plugs are on the engine block below where the spark plugs are located.
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
( 4 ) for the 2002 Ford Ranger 2.3 L - DOHC engine
The 1996 Ford Ranger 2.3 L engine has Fords Twin Plug ignition system , so it has ( 8 spark plugs )