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FRPP SCJ Head Spark Plug

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Post  t120r on September 10th 2019, 3:56 pm

I've read multiple posts that the Autolite AR3934 is the plug to use. Only problem is that these are rare in Canada. Is there an NGK equivalent?

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Post  Lem Evans on September 10th 2019, 5:11 pm

t120r wrote:I've read multiple posts that the Autolite AR3934 is the plug to use.  Only problem is that these are rare in Canada.  Is there an NGK equivalent?

Try a R5671A-8

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Post  rmcomprandy on September 10th 2019, 10:21 pm

t120r wrote:I've read multiple posts that the Autolite AR3934 is the plug to use.  Only problem is that these are rare in Canada.  Is there an NGK equivalent?

3/4" reach, 5/8" hex, gasketed ... 3934 Autolite, (without the AR).
There are many, many other spark plugs of those dimensions; a matching NGK will be about a 7 heat range.

Personally ... I use a BKR7EIX. (2667)

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Post  Gregaust on September 12th 2019, 6:17 am

I use BCPR6ES-11 NGK

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Post  t120r on September 15th 2019, 5:59 am

Thanks for all the replies. It's so hard to find Autolites here that having another equivalent will sure help.

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