Spark Plug Questions

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David Sailer

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2001 90hp Mercury outboard. This is the first plug replacement. My dealer sold me NGK's with a number of BUHW-2. Went to change them today and found the origional factory plugs were marked BUZHW-2. They are identical in apperance, the only differenence I see is the "Z". Anyone have any idea what the difference is? Is the "Z" something critical to my motor. Opinions please.
 
David-

Beware!

I have the same motor and when I bought a set of replacement plugs they were $8.00...not for all 3, $8.00 EACH!



Boat, noun - a hole in the water in which money is tossed.



az
 

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