if serviced well do last longer, in regards to the pumps. the tdci's are not coded, if your handy with a spanner and shop about you will get the pump reconned for a few hundred, or just buy one from ebay for a couple, injectors do drop there coding which can be a pain


its also a common missconception that you have to match the numbers perfectly for replacement, not the case as theres just a few different revisions, if it looks the same and has same plugs it will work