( Motorcraft FL-820-S engine oil filter ) for the 4.0 liter V6 and the 4.6 liter V8
engines according to the 2010 Mercury Mountaineer Owner Guide and
fordparts.com
For a 2000 Mercury Mountaineer : According to the Owner Guide and fordparts.com : For the 4.0 liter SOHC V6 engine ( Motorcraft FL-1A ) For the 5.0 liter V8 engine ( Motorcraft FL-820-S )
Any place that sells Motorcraft oil filters will have an application chart showing you which one fits your Focus.
Motorcraft ( FL820S ) according to motorcraft . com
Motorcraft ( FL-820-S ) engine oil filter
Fl-1A
This oil filter fits many Ford, Lincoln and Mercury car and truck applications.
According to the 1998 Ford Expedition Owner Guide : For the 4.6 and 5.4 liter V8 engines : ( Motorcraft FL-820-S engine oil filter )
Also fits the 4.6L in a 2005 Mercury Mountaineer
The Motorcraft FL-1A engine oil filter fits NUMEROUS Ford engines ( and also some of the other manufacturers engines )
Ranger 2.3 (it fits and works weel, but the original is the FL1) Focus Many other.
Do not install a Supertech filter on your Ford. Install a quality filter such as Purolator, Wix, or Motorcraft. The filter is too important to go cheap. Change your oil/filter every 5,000 miles.
Purlator PL24651