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Old 05-16-2002, 12:02 PM
oupa300e oupa300e is offline
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Join Date: May 2002
Location: California
Posts: 17
10.9 refers to the hardness of the bolt (it meets ISO 10.9 strength specs.) A 10.9 bolt can take more torque than an 8.8 bolt, for example.

1988 300e
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