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Old 08-12-2009, 12:05 PM
TheMotheMan TheMotheMan is offline
Motorized Bicycle Member
Join Date: Jun 2009
Location: Southern Minnesota
Posts: 43
Default Spark plug differences

What are the differences in spark plugs such as the NGK-B5HS and the NGK-B7HS. I read in another thread here that the B7HS runs cooler? What are the real differences in the plugs? They have the same threads and reach. I don't know much bout them, just wondering.
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