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E3 spark plugs

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I want to use an E3.38 Spark plug for a 2009 CRF250X but it looks a little bit longer, I triple checked it though and it says is replaces an NGK IMR8C-9H. Does anybody have any knowledge about these plugs, (warnings, comments, suggestions) thanksIMG_0001.JPG

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On 8/21/2019 at 2:33 PM, teddy2011 said:

 

I want to use an E3.38 Spark plug for a 2009 CRF250X but it looks a little bit longer, I triple checked it though and it says is replaces an NGK IMR8C-9H. Does anybody have any knowledge about these plugs, (warnings, comments, suggestions) thanksIMG_0001.JPG

 

Why do you want to use this plug?

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I'm with Chuck on this, the stock NGK plug is fine and, is guaranteed to be of the proper heat range.

(any technical data to confirm the E3's heat range?)

 

You're not going to cure any driveability issues by installing a 'fancier' plug. 

(meaning it won't compensate for other problems your carburetor, valvetrain or ignition system etc. may have)

 

 

Edited by mlatour

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