Just changing the seat in my Peugeot boxer 2016 plate X2 50 and I’ve come across a snag straight away. Paragraph I have disconnected the battery and I intend to take the pretension off the seat and then fit the new seat which has an existing buckle attached. The pre-tensioner will sit under the seat just to make the electrical connection. The nuts holding the pre-tensioner onto the actual seat itself is tricky, and I’m just trying to work out what size tool I am going to need to get it off, any ideas, my old non metric spanners are struggling!