FITS THE FOLLOWING: all 123 and 126 chassis through 1985 with turbo diesel engines. Is your turbo diesel 5 cylinder engine not idling smoothly? Is it loping or hunting? Does it seem to speed up a little, slow
down some, then speed up a little, etc., etc. while you sitting at a stop? You may need to install the Mercedes factory upgraded rack dampener bolt. It is located on the lower back end of the fuel injection pump.
The original one had a week spring and with fatigue could not hold a steady idle. This new Bosch OEM one has a tougher spring made of better alloy. You should install one unless you have records that it has
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been done before. Easy to install and adjust. Sold with instructions for both.
(617 5 cylinder engines only 1981 to 1985)
PLEASE NOTE: This rack damper comes with special o-ring.
Location of rack damper bolt
