Kohler Plugs

CKain(MI) · Jun 8, 2017

What is the favorite spark plug for Kohlers, K201-K321 . Thanks

MNGB · Jun 8, 2017

Champion H10 (C)
GB in MN

jeffcat · Jun 9, 2017

Also consider the NGK copper core cross over.

jeffcat · Jun 9, 2017

I crossed through a couple of plug charts and it looks like the NGK plug will be a B4L. All of my modern garden tractors,generators,etc. use the BPR6ES or the BPR5ES plugs. My engines just love them.

R Bedell · Jun 10, 2017

ckain(mi):

I am not a Champion plug fan.

Most Cub Cadet owners with the single cylinder K series engine use the Autolite [b:9ddc7f9e8c]216[/b:9ddc7f9e8c].

However, there are numerous plugs one can use.

T.R.K. · Jun 10, 2017

I am thinking a NGK BPR5ES or BPR6ES is too long thread for a flathead Kohler. An H10 is only about 3/8 thread length and those NGK numbers are much longer shank because they are made for overhead valve engines. Even if they don't hit a valve or the piston, after the threads carbon up removal will be a challenge.

jeffcat · Jun 12, 2017

That is why the second sentence says All of my modern engines. Also gave the cross for his.

Don B. · Jun 14, 2017

yup. I do not understand the hate on Champion plugs, been using them (only!) for years.
in my cars trucks, anything with an engine.... I am and always been a Dodge guy and Champs have been OEM for eons so that might have somethin to do with that... on my vehicles they seem to give fits if I DON'T put Champions back in ha ha... (side note you could not give me anything made by Honduh or Toyota)
Plugs are quite cheap, mass produced, and ceramic can be kinda fragile so I can see how you might get a bad one (probably due more to shipping/handling than anything) now and then.

DR. EVIL · Jun 15, 2017

I had a REALLY tired K-161 or 181 Kohler that was hard on plugs. A J-8 lasted as long or longer than an NGK. I had a Motorcraft plug made by Autolite break the insulator off inside a brand new Ford 300-6 engine. Luckily no damage done but I've never bought an Autolite plug since. That 300-6 had Champions put in it.

The H-10C Champion plugs work fine in my Kohlers, and I'm still running D-15Y's in my tired old Farmall pushing snow winter after winter idling around in cold Temps. If something was going to foul a plug It should be That tractor!

dirtpusher · Jun 21, 2017

I only run ngk plugs in all of mine. b-6L I think is the number. Far superior plug to any junk champion. Much better performance and longer life in my experience.

MNGB · Jun 21, 2017

(quoted from post at 10:09:51 06/21/17) I only run ngk plugs in all of mine. b-6L I think is the number. Far superior plug to any junk champion. Much better performance and longer life in my experience.

I have not found NKG plugs to be any better then the Champions in some cases the Champions are the better plug and in some engines the NKG's are better.
GB in MN

Kohler Plugs

CKain(MI)

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MNGB

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jeffcat

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jeffcat

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R Bedell

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T.R.K.

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jeffcat

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Don B.

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DR. EVIL

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dirtpusher

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MNGB

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