What spark plugs do I use.

[Propane1]

Onan B43M engine. In my 1982 Case 446 tractor. I want to use Champion or NGK because they are the most popular brand around here. And no, I don’t want to start a discussion about which brand is better or worse. All plugs fail and it don’t matter which brand.
I just want the number of the plug in Champion or NGK. Just want to know what you members come up with.

Thanks.

Noel

 

[Lance Skene]

Onan 167-0298 Spark Plug B43M B48M Short Reach 167-0298 Spark Plug B43M B48M [167-0298] - $4.50 : Onan Parts.Com, Rebuild Parts for Onan engines

167-0298 NGK Spark Plug B43M B48M. Also some BFA Utility Gensets. Plug Hex Size: 13/16" Plug Reach: 7/16" Thread size 14mm Champion RH18Y. NGK B-4L/3112 JD p/n HE167-0298 Case/Ingersoll p/n C25845. For use only on models listed above. Most but not all other B & P Series use the 167-0272 plugs.

onanparts.com

 

[Propane1]

Thanks Lance.

Noel

 

[MNGB]

Hi Noel the Case 446 I had used Champion H-10's ist started and ran very good the alternte is an Autolite 218 I've never used an Autolite plug in snall engine nothing against them just never had any to use
The Sears Suburbam SS16 used the same plugs that waa an Onan BF series

 

[Propane1]

Thanks Gary. Seems there are a few different answers, depending where you look. So I’m trying to figure on the most popular one. Kinda figured H-10 champions would work. Some of the old car flat head engines used them.

Noel

 

[chieffan]

My NAPA store stocks Champion, NGK and some Autolite. I usually go with NGK.

 

[MNGB]

Thanks Gary. Seems there are a few different answers, depending where you look. So I’m trying to figure on the most popular one. Kinda figured H-10 champions would would. Some of the old car flat head engines used them.

Noel

And the Kohler flathead K series also use that same plug

 

[Propane1]

And the Kohler flathead K series also use that same plug

Yes. I knew that too Gary. I have 6 tractors with kohlers hehe.

Noel

 

[MNGB]

Yes. I knew that too Gary. I have 6 tractors with kohlers hehe.

Noel

I knew you had a few Kohlers I like being able to having parts that can be used on several machines vs a different part for all

 

[Propane1]

Yes Gary. That’s why I use 10w-30 oil in every thing. Simpler to keep track of.

Noel