These are the one part ive actually purchased from my local LR dealer. however, the # escapes me. If you call them they can look em up. basically, you need 3 o-rings total. the top hose has one on the outside of the threads, the bottom has 2 o-rings, one the same as top (for outside the threads) and another smaller one that slides halfway down the connector.
Edit: my count of o-rings was based on the assumption you were only removing them engine-side. otherwise yeah, you need 5.
It only took them a minute to look it up, tho if i recall i paid $4 per ring. if the variety pack turns out to be cheaper and contain em, id say go that route as others have suggested.
Random side thought: if youre diagnosing a leak right at that area and the o-rings dont fix it, make sure to check the oil pressure sensor, mine sprung a leak thru the electrical connection.
