Engine off and cool engine
With some old rags ready.....
Unclip sensor wiring
Position rags beneath sensor housing
With new sensor ready, whip the retaining clip off, remove old sensor and pop the new one in, re-attach retaining clip (make sure sensor is seated properly)
Re-attach wiring
Might be lucky and no coolant lost, but double check level before setting off and happy motoring fella!
