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Champion Spark Plugs #86498 07/09/08 09:32 PM 07/09/08 09:32 PM
Joined: Jun 2005 Posts: 287 MI AfterHoursResto OP enthusiast
AfterHoursResto OP enthusiast Joined: Jun 2005 Posts: 287 MI	Whats the difference between RJ12YC and RC12YC and RC12YC5? Thanks. Roman Sobilo

Re: Champion Spark Plugs [Re: AfterHoursResto] #86499 07/09/08 09:44 PM 07/09/08 09:44 PM
Joined: Jun 2006 Posts: 3,075 Eastern Ohio mopowergtx master
mopowergtx master Joined: Jun 2006 Posts: 3,075 Eastern Ohio	First off the R at the front of that stands for Resistor. The 12 is the heat range the Y is for the 13/16" wrench it takes I believe off hand and the C is for copper. Now the J and the C in front of the 12 on all 3 stands for the threads and length of the the tip. The only Mopar plug of them is the RJ12YC which is a Big Block plug with a decent heat range for a street or street/strip car.

Re: Champion Spark Plugs [Re: mopowergtx] #86500 07/09/08 10:01 PM 07/09/08 10:01 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	r=resistor j=13/16 hex, 14mm thread, 3/8 reach, c=5/8 hex, 14mm thread 3/4 reach 12=heat range y=extended tip c=copper electrode pretty sure i'm right

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