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Farmall & IHC Tractors Discussion Forum

spark plug

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01-18-2017 14:22:24

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Dont know what I should use,would like to buy new spark plugs for my farmall cub,but unsure what is recommend for it, can anyone recommend the proper plug for cub,would appreciate any advise.

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01-19-2017 05:49:46

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 Re: spark plug in reply to JE/Pa, 01-18-2017 14:22:24  
Thanks everyone for the great response,will check at auto parts this week and see what s available,really appreciate all the great information,

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01-19-2017 04:36:38

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 Re: spark plug in reply to JE/Pa, 01-18-2017 14:22:24  
Autolite 386 or 3116 are also good.

There are many different plugs that will work. Most of the time it won't make a bit of difference which you choose, but in a few instances it can become important whether you choose a "hot" plug or a "cool" plug. A hot plug works better for puttering around and prevents fouling if the tractor burns a little oil. A cool plug is a better choice if you work the tractor hard and it tends to run hot.

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01-18-2017 17:26:13

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 Re: spark plug in reply to JE/Pa, 01-18-2017 14:22:24  
I've used Champion D21's in all my engines that use that thread size. Case , Farmall , Oliver , Never had a problem ...

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Bob M

01-18-2017 16:04:55

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 Re: spark plug in reply to JE/Pa, 01-18-2017 14:22:24  
I concur with old. I've had the best luck with the NGK that crosses to the Champion D21.

If memory serves it will be the NGK A6 or AB6.

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01-18-2017 15:49:57

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 Re: spark plug in reply to JE/Pa, 01-18-2017 14:22:24  
A catalog I have says to use A306803 plugs but it does not say the brand of the plug . Me I would use the plug that would cross over the the NGK brand since now days with the gas we have the NGK plugs seem to hold up real well

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