Sparkplugs for SH

Anonymous-0 · Oct 19, 2008

What is the best plug for my Super H??

rustyfarmall · Oct 19, 2008

Autolite 3076 or 388.

John M · Oct 19, 2008

3076 will not fit a Super H.

randy hall · Oct 19, 2008

autolite 3116

Dave_Id · Oct 19, 2008

Autolite 386 would be great for an engine that is in real good shape, but if you need a hotter plug for a worn engine, or a tractor that isn't used much, then go with Autolite 3116. The equivalent is a Champion D21. I've had better luck over the years with the Autolite.

Andy Motteberg · Oct 19, 2008

3076 plugs would be too big to fit in a Super H.

Andy Motteberg · Oct 19, 2008

Champion D18Y. I use the D18Y Champions in all our Farmall letter series tractors and they have been the best for us. I myself have not had good luck with Autolites.

karl f · Oct 19, 2008

The current Autolite catalog skips a line or some other typo in the Farmall section. It showed 3076 (7/8ths thread) for our 400 gas!! So i used a 2005 catalog and it showed 3116.

karl f

CNKS · Oct 19, 2008

The plugs are 18 mm (0.709 in), so there is no english system thread size.

NE NEB FARMALL · Oct 19, 2008

I have had nothing but problems with champion plugs in my Super H. I run Autolite 3116 or Delco C 86 or C 87.

karl f · Oct 19, 2008

what i said was the current book showed the wrong plugs 3076 with 7/8 inch thread. I was in a hurry, never opened the boxes. Found out when i got to the tractor i got the wrong ones. So the next week i had to reference an older book that showed the correct 3116 with 18mm thread. I fear the H may have been listed on that same line too.

bottom line, 2008 autolite catalog has a mistake in it!

karl f

Sparkplugs for SH

Anonymous-0

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rustyfarmall

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John M

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randy hall

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Dave_Id

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Andy Motteberg

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Andy Motteberg

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karl f

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CNKS

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NE NEB FARMALL

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karl f

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