Fitting an air filter to Rover 45TD - oilfilter
I need to replace the air filter in our Rover 45 2002 TD, where is this part located? and how do you remove the old one?. It was a very easy job on the Almera but this engine (the L series) is cover in plastic and the manual don't show the location.
Fitting an air filter to Rover 45TD - Peter
If it is the same layout as the 420SLDi then the air filter is in the flat rectangular black plastic box between the engine and the battery. The top is secured by 4 clips. A 5 minute job at the most.

HTH