Either the 4.6 liter ( 281 cubic inch ) V8 or the 5.4 liter ( 330 cubic inch ) V8
try a 18mm socket
In a 1999 Ford Expedition : There were two engine sizes from the factory : The 4.6 litre / 281 cubic inch V8 and the 5.4 litre / 330 cubic inch V8
The 2009 Ford Expedition has a V8 engine.
The 2012 Ford Expedition has a V8 engine.
The 2010 Ford Expedition has a V8 engine.
The 2014 Ford Expedition has a V8 engine.
The 2013 Ford Expedition has a V8 engine.
The 2006 Ford Expedition has a V8 engine.
The 2004 Ford Expedition has a V8 engine.
The 2008 Ford Expedition has a V8 engine.
The 2011 Ford Expedition has a V8 engine.
The 2003 Ford Expedition has a V8 engine.