Apparently you will have to drop the subframe to do it im thinking of replaci g both pipes and have done with it itl cost around 400-450 , citroen is nearly 700quid .....if its the alloy pipe u need its £203, for both pipes plus fluid its around £280ish ....im not sure if you can replace just the seals but also that alloy pipe goes into a metal clamp theres a v.good possibility that the alloy is corroding