I was able to replace one of mine with no special tool. Just have to mark on the pump exactly where that little plate thing was. Then once you're done use the hand primer a lot to get the fuel back in there or else the car won't start. And I mean a LOT of priming.

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1982 240D 225K


1986 VW Jetta (gasoline) 379K


1988 BMW 735i 168K