I just bought a new overboost switchover valve for the 87 300D and want to make sure I got the right thing. Old part says 001 540 70 97, new one says 001 540 86 97. Only reason I ask is that there's another identical part closer to the blue vacuum dashpot and I want to make sure I didn't get that instead. I think I made it pretty clear which part I needed at the parts dept., but I always want to be sure. Can someone look up and see if 011 540 86 97 is the correct swithover valve?

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)