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Did Mazda change to better coils?

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Old 07-31-2009 | 11:40 PM
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Did Mazda change to better coils?
I found two part # on the coils. One is N3H1-18-100B-9U and the other one is N3H1-18-100A-9U. What is the difference?

Thanks
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Old 07-31-2009 | 11:42 PM
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Originally Posted by tmak26b
I found two part # on the coils. One is N3H1-18-100B-9U and the other one is N3H1-18-100A-9U. What is the difference?

Thanks
The 100B is the latest version of the coil. You most likely won't find any of the 100A's in stock. The change over was about 2 yrs ago.
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Old 07-31-2009 | 11:53 PM
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thank you. What about FC coils or LS2 coils. Anyone have a write up?

Thanks
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Old 08-01-2009 | 12:25 AM
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Originally Posted by tmak26b
thank you. What about FC coils or LS2 coils. Anyone have a write up?

Thanks
i would do a google search for that one. a couple of options, but only the bhr is plug and play.

beers
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Old 08-01-2009 | 02:21 AM
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they add 9U cuz it works for the 09+ model too. just not so sure if its actually "another version" or whatever.

FC coils wont work.

BHR is the plug and play
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Old 08-01-2009 | 08:43 AM
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For some odd reason, the N3H1-18-100B is twice as much as the N3H1-18-100B-9U. What is the difference?

thanks
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Old 08-01-2009 | 08:51 AM
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This is the lowest price I have found for them.

http://www.trademotion.com/partlocat...layCatalogid=0
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Old 08-01-2009 | 09:52 PM
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Mazdaspeed is even better I am going to order a new segt of coils, plugs and wires for my 06 with 37K. Let's hope the car will run faster!
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Old 08-01-2009 | 11:07 PM
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Originally Posted by tmak26b
Mazdaspeed is even better I am going to order a new segt of coils, plugs and wires for my 06 with 37K. Let's hope the car will run faster!
rofl ...

yeah ... I know how much they're on MMS ... lol

I dont have any in "stock" right now, spent too much for my FC

maybe I should get some in stock just in case ...
Last edited by nycgps; 08-01-2009 at 11:34 PM.
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Old 08-01-2009 | 11:25 PM
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This is what I figure. My car seems to be running okay. I am going to do the 3 things, keep these old parts as spare for now. I track my car, so always handy to have spare parts
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Old 08-05-2009 | 03:15 AM
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YEP, the B coils are the latest and best if you want "Mazda" ones...
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Old 08-05-2009 | 06:17 PM
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Received the new coils today from Mazdaspeed, they are all the N3H1-18-100B-9U coils. I have a quick question. How do I go about testing the oil coils while I am off the car. Can I run an ohm test on the new one to compare to the old ones?

Thanks
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Old 08-05-2009 | 08:54 PM
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Originally Posted by tmak26b
Received the new coils today from Mazdaspeed, they are all the N3H1-18-100B-9U coils. I have a quick question. How do I go about testing the oil coils while I am off the car. Can I run an ohm test on the new one to compare to the old ones?

Thanks
Here is the test.....

http://www.finishlineperformance.com...16-07-1793.pdf
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