I still have my stock water pump and tensioner at 172k. The pump has a wee bit of play and seeps coolant depending on what kind of mood it is in but never has given me any issues. As far as suspension goes my stock front struts are in my car and somehow are in good shape still. Never been replaced and it rides great. Same thing with all of my rear links. Rear shocks had a run in with a girl driving a civic.