There are four oxygen sensors. Two are underneath the car on your exhaust pipes near the front but behind the engine. The other two are under the hood. Follow the exhaust pipes from the manifold and you should spot them. You will need a special socket for them. You can find it at any auto store.
The 2001 Land-Rover Range-Rover has a V8 engine.
The 2003 Land-Rover Range-Rover has a V8 engine.
The 2007 Land-Rover Range-Rover has a V8 engine.
The 2013 Land-Rover Range-Rover has a V8 engine.
The 2011 Land-Rover Range-Rover has a V8 engine.
The 2009 Land-Rover Range-Rover has a V8 engine.
The 2005 Land-Rover Range-Rover has a V8 engine.
The 2012 Land-Rover Range-Rover has a V8 engine.
The 2008 Land-Rover Range-Rover has a V8 engine.
The 2010 Land-Rover Range-Rover has a V8 engine.
The 2004 Land-Rover Range-Rover has a V8 engine.
The 2006 Land-Rover Range-Rover has a V8 engine.