Rick Haywood Posted August 1, 2011 Share #1 Posted August 1, 2011 OK I am wondering what I did or maybe there isn't really any difference. I changed the plugs today in my 2000 venture and the Clymers manual said they took a NGK DPR7EA-9 When I got the old ones out and the new ones in I was cleaning things up and happened to look at the old plugs, which by the way looked new after 12,000 miles anyway the ones I took out where NGK DPR8EA-9 Anyone know what the difference is? Is one hotter than the other? Just wandering Thanks Gentleman. Link to comment Share on other sites More sharing options...
Black Owl Posted August 1, 2011 Share #2 Posted August 1, 2011 The 7 is a hotter plug. Link to comment Share on other sites More sharing options...
dingy Posted August 1, 2011 Share #3 Posted August 1, 2011 Attached is an NGK plug reference chart. Gary Link to comment Share on other sites More sharing options...
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