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Old 10-24-2018, 10:08 PM   #1
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Default M90 top vacuum tee

Anybody know the size or a part number for the oring used on the top vacuum tee thingy on the m90s?
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Old 10-25-2018, 10:32 AM   #2
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Found the OE part number: 24503492 O-RING SEAL-0.864

So that's a start.
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Old 10-26-2018, 08:26 AM   #3
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I ended up with two different O-rings to try. The first is metric, 22mm ID x 2.5mm cross-section, the other standard 7/8 ID x 3/32 cross section. Closest thing off the shelf at the hardware store I could find to the dimensions listed at Buy GM 24503492 Seal, genuine OEM part

Both are a tight fit, need some grease to get the vac manifold installed again, but they work.
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