Thread: W203 220CDI What is this on AIr filter housing
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Old 05-06-2014, 02:36 PM
Zulfiqar Zulfiqar is offline
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Join Date: Nov 2010
Location: TX
Posts: 3,997
yep, its a gauge to measure filter performance.
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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
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