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spark plugs..ngk or nippondenso
The factory service manual lists 3 spark plugs for the svx.
1) NGK pfr6b-11
2) NGK pfr6g-11
3) Nippondenso pk20pr-11
Anyone know what the difference between the b and g ngk #'s?
Does anyone have an opinion on the nippondenso plug? It's a lot cheaper than the ngk plugs but i've always had good experience with ngk's.
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