Only normal Height Available.

[Longtrail]

First post on this page shows some videos on servicing the front valve block (rear is the same but it's much harder to remove the valve block!), there's also a link to where I bought the replacement o'rings, I also used some silicon grease when installing them, the car stays at normal height for weeks on end:

2012 LR4 Reluctant to lower from off-road suspension mode

Changing the dryer, if you have a Hitachi compressor, is straight forward. Hardest part will be disconnecting the hoses from the back side of the compressor (intake and exhaust hoses), and re-installing the compressor bracket when you reassemble due to a hard to reach bolt that need to be...

www.landroverworld.org

 

[ftillier]

I got an o-ring kit off of amazon and it was junk - the o-rings did not match up one bit. I recently got the kit from British Parts of Utah as recommended by @Longtrail and it was much better. Rebuilt the front block and it's working like a charm at the moment.