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w210 E420 spark plug and gap
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03-12-2001, 10:51 AM
apb
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Join Date: Mar 2001
Location: Houston, Texas
Posts: 450
I intend to give the ultra x a try.
Are they already pregapped, or is there something I need to know about checking the gap on these king of plugs? I, of course, know how to gap a regular plug but these seem potentially tricky.
apb
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