The VP in my 602 failed at about 150K. It was the original unit. The failure was not catastrophic, it just started having problems keeping the vacuum up high enough for the power brakes to work reliably. I have pictures somewhere if you want to see them.

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1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

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