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Spark Plug help

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Old 02-16-2010, 06:15 PM
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Default Spark Plug help

Can anyone tell me what NGK plug I would need to purchase for my 2004 Low Rider and what should I set the gap at? Thanks in advance.

Last edited by yandeltx; 02-16-2010 at 07:00 PM.
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Old 02-16-2010, 06:33 PM
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If I remember, if you go to ngk website you'll be able to search based on model / yr.
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Old 02-16-2010, 07:06 PM
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Old 02-16-2010, 07:07 PM
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2005-1998 HARLEY-DAVIDSON FX 1450
Spark PlugPart No.Stock No.Plug Gap
Standard
DCPR7E 3932 0.04
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Old 02-16-2010, 07:42 PM
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Default spark plug

I guess I might as well ask. Standard or Iridium?? Is the price difference worth it? thanks,
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Old 02-16-2010, 07:45 PM
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That's up to you. I can't say either way as I haven't used any of the higher end plugs.
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Old 02-16-2010, 10:29 PM
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Nope. A good platinum plug will be all you'll need.

All it is, is a coating by the way. Thin film deposition of platinum or iridium onto the electrodes.
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Old 02-16-2010, 10:33 PM
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I just use the stock HD plugs. They last at least 5000 miles for me.
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Old 02-16-2010, 11:08 PM
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I just installed irrdium plugs. gap at.040. The part # was given to you above... my detonation I was experiencing before is gone. Maybe the plug helped. I dunno. Maybe the marine stabil I started to use at the same time is what eliminated the detonation. Anyways these plugs are less than 20 bucks a pair, ain't gonna break the bank to run em. The irridiums are like having a dyson vacuum vs a hoover... both will work fine, however the dyson will never clog and continue to run at it optimum a lot longer than the hoover.

Last edited by rounder; 02-16-2010 at 11:11 PM.
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Old 03-09-2010, 03:27 PM
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So does anybody know if the NGK part # for a 2005 Dyna is the same as a 2007? I ask because their web site only goes up to 2005.
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05, 1450, 1998, 2004, 2005, davidson, dyna, fxdli, gap, glide, harley, low, plug, plugs, rider, spark

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