I agree with the above, including that replacing the o-rings and copper washers does not constitute an IP rebuild but it's useful nevertheless. Regarding the perches it seems that most people can get MB to pay for the repair completely even without having extended warranty. I was only able to get 50% out of them though.

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2004 VW Jetta TDI (manual)

Past MB's: '96 E300D, '83 240D, '82 300D, '87 300D, '87 420SEL