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Old 03-11-2010, 03:49 PM   #10
cschmidt1956's Avatar
Drives: Too Little time to drive....
Join Date: Oct 2009
Location: Nowhere
Posts: 268
On the Olds Engine they used two heavy silicone o-rings. I've never replaced them and they are not included even with a factory filter.

Now my Saturn Astra motor with a similar filter does come with one in both the factory filters and the Purolator ones.
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