Which spark plug? Best brand and number? - Honda TRX Forum
 
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post #1 of 3 Old 12-08-2018, 04:09 PM Thread Starter
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Which spark plug? Best brand and number?

I found a sticky with a link to Jacks- but there's no info on which plug our 400's take. Does anyone have a brand and number for the one that works best?
Thanks,
Bill
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post #2 of 3 Old 12-09-2018, 02:58 PM
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NGK DPR8Z is what I use - what I prefer is Nippon Denso X24GPR-U - in a pinch I use AC Delco 4163 - for racing I use DPR8ZIX - no other spark plugs are listed as exact replacement for the 400EX and 400X - there are other plugs that will fit the threads, but not the design feature The DPR8Z, DPR8ZIX and X24GPR-U are the only ones you will find in my garage or tool box
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post #3 of 3 Old 12-10-2018, 09:37 AM Thread Starter
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Thanks so much!
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