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Old 07-30-2013, 09:19 AM
toomany MBZ's Avatar
toomany MBZ toomany MBZ is offline
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Join Date: Nov 2006
Location: central Va
Posts: 7,820
Yes, egr valve. I have mine disabled, hopefully.

You're missing the thermo switch too, a bolt has taken its place.
Attached Thumbnails
What is this part? 82 300SD Engine-screen-shot-2013-07-30-8.17.25-am.jpg  
83 SD

84 CD
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