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NKG plugs - bcpr6es11 or bcpr7es11

3071 Views 5 Replies 4 Participants Last post by  musky
Sorry to ask about spark plugs (I searched) for a 2000 t5. NKG 6's or 7's & what is the difference?

I checked on the NKG page & it recommends bcpr6es11. I havent got the handbook with me.

Cheers M.
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The only difference is the heat range. The 7s are one grade cooler than the 6s. If you are using the 6 version and the insulators look white after use and you have trouble getting full boost, especially in hot weather, switch to the 7 range. If you are using 7s and the insulator is getting dark brown or building up deposits, go to the 6 heat.

Incidentally, it varies by manufacturer if increasing numbers are increasing or decreasing heat. Most of them use higher numbers for higher heat.

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