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Threads Tagged with rn12yc

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4, 4220, applications, bosch, bosh, champion, copper, cross, davison, harley, platinum, plugs, reference, rn12yc, spark

Champion RN12YC to Bosch Platinum+4 Cross Reference??

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Multi-page thread

1 2)

staged67gspwr on 09-22-2006

07-25-2010 09:16 PM
by kc5vgw

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11

19,725

Ignition/Tuner/ECM/Fuel Injection

404, 4163, 4164s, 5000709, autolite, champion, davidson, harley, harleydavidsonautolitedistributor, hd, plugs, rn12yc, spark, standard

2 VERY basic Q's

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Multi-page thread

1 2 3)

HarleyX89 on 05-06-2009

05-07-2009 12:38 PM
by Raptor1956

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26

2,504

auto, champion, colder, condition, harley, hotter, numbering, panhead, plug, plugs, rich, rn12yc, run, safely, sportster

rn12yc whats next hotter plug?

pirate4hire on 10-13-2007

10-15-2007 08:49 AM
by mentor70

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5

8,545

Exhaust System Topics

colder, commpression, harley, high, plug, plugs, rn12yc, rn14yc, shovelhead, spark, versus

Whats the deal with these spark plugs?

staged67gspwr on 09-21-2006

09-27-2006 01:25 AM
by staged67gspwr

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6

2,991

champion, colder, difference, engine, evo, harley, numbers, part, plugs, rn11yc4, rn12yc, spark, sparkplug

Spark Plug Help

Cman on 09-21-2005

09-21-2005 07:15 PM
by HDF Tech

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1

1,464

Exhaust System Topics

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