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Old 05-15-2017, 09:46 AM
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Mike Murrell Mike Murrell is offline
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Join Date: Feb 2000
Posts: 2,580
On my '91 300-SEL - the check valve within the red box of your photo is black on one half of the check valve and bluish-gray on the other - part # on back side is 001 140 17 60

The one next to it is beige on one half of the check valve and black on the other - part # on backside is 001 140 49 60. The beige may have been white 26 years ago.

WEB research on another site brings up part # 002 140 84 60 when I key in 001 140 17 60. Here at peachparts 17 60 & 49 60 still show as valid part #s.

Cleaning the part # side with a Q-tip and water helped to clear up the part #s. A stronger flashlight also helped.
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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"

Last edited by Mike Murrell; 05-15-2017 at 10:03 AM.
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