it's called an altitude compensator

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2009 E320 Bluetec 117,000
1995 E300D 306,000 Sold
1996 Ford Taurus LX 130,000 Sold
1985 300TD Still 225,000 Sold
2016 Ford Fusion 24,900

Thanks for the reply.

I should have a snapshot from WIS later in the week hopefully providing a bit more detail.

A quick search for 'altitude compensator' brought up the thread you were referring to http://www.peachparts.com/shopforum/tech-help/314060-bosch-altitude-compensator.html

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)