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Normally there are no warning signs. Have been through two n5x wps. 60-70k is very prime territory for N54 pump failure. My 135i went at 69k and my old 335i at 71k. My buddies 335xi also went around 65k iirc. I'd go ahead and do it if you know its the factory original part.
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MHD | BMS | VRSF | APEX | RECARO | TC Kline | BERK | Turner Motorsport | Eibach | BMW Performance
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