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Spark plugs recommendations


Carl-Gustav
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Go to solution Solved by Sniper,

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Not sure what brands are available in Sweden, but RockAuto shows several brands and part numbers, all of which should fit.  You might be able to cross one of these numbers to something locally available.  I run the Autolite 306 plugs in my engine, which is also called for your engine.  It's a resistor type plug with a 3/8" reach.

 

https://www.rockauto.com/en/catalog/chrysler,1947,new+yorker,5.3l+324cid+l8,1486585,ignition,spark+plug,7212

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I have been running the same set of AC45r in my Plymouth 6 for 45k miles.  Pulled a couple last week they still look new.  I believe AC46r is the crossover for the autolite number Sniper mentioned.

There are Bosch crossovers as noted in the linked chart

 

https://www.sparkplug-crossreference.com/convert/AC_DELCO/46

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