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Old May 2, 2011 | 05:31 PM
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Default Spark Plugs
What brand and part number are you guys using?
 
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Old May 2, 2011 | 05:58 PM
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Default Spark Plugs
I use the stock H-D 6R12. Talked to HD service tech expert, I had asked about the Screamin Eagle iridium type plugs for my FLHTK- He advise NOT- having problems with those plugs on serviced bikes. He said just use HD 6R12 BUT gap at .035 instead of factory .038-.043 (.040). Said helps with pre-ignition with some of these watered down ethanol gas we find at the service stations these days. I tried it- NO problems. Works for me.

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2011 103" FLHTK
Leesburg, FL
 
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Old May 2, 2011 | 07:00 PM
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Just installed E3 plugs 600 miles or so ago, fuel knock down mileage went up a bit strange. I dont know the part number.
 
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Old May 2, 2011 | 07:28 PM
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Stock 6R12's.
Ran the SE platnums and NGK Iridium and only noticed the difference in my wallet
 
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Old May 2, 2011 | 08:16 PM
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When it comes to spark plugs, I prefer OEM.
 
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Old May 2, 2011 | 08:24 PM
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I went with the SE Platinums only because I can get more years out of them before they need replacing. In the long run they should be cheaper.
 
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Old May 3, 2011 | 05:04 PM
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How long are they supposed to last?
 
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Old May 3, 2011 | 05:10 PM
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Autolite 4164, adjust at 5,000 replace at 10,000. $2.29 Never had a problem, don't ever carry spares and just turned 88,000 miles on her this past weekend. 45 mpg consistent.
 
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Old May 3, 2011 | 05:26 PM
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Originally Posted by Stiggy
Autolite 4164, adjust at 5,000 replace at 10,000. $2.29 Never had a problem, don't ever carry spares and just turned 88,000 miles on her this past weekend. 45 mpg consistent.
Same ones I use.

 
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Old May 3, 2011 | 07:20 PM
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Originally Posted by Guntoter
I went with the SE Platinums only because I can get more years out of them before they need replacing. In the long run they should be cheaper.
 
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