Thread: Official replacement interval for spark plugs on an 07 335i?
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      10-02-2009, 09:56 PM   #14
dgraham1023
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Drives: E46, E36
Join Date: Oct 2009
Location: spring hill tn

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Seen a bunch round 30-40K. When we change them, they are definetely worn looking, especially if customer has Dinan installed or a box installed.
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