Which is the correct radiator cap for a '41 H ?

Yooper Farmall · Jan 8, 2013

My radiator cap is beat up, rusted, and the seal is pretty much gone, I see two different caps on ebay, the one on it now is just like the one with the red background, would it have been silver or painted 2150? I see this other style with the black background.

RMOMN · Jan 8, 2013

My 41 has the top style(non pressurized)

Zachary Hoyt · Jan 8, 2013

The upper style is for the non-pressurized radiator, the lower is for pressurized. Look at the radiator filler neck and you will see which one you need. The pressurized one has a ledge inside it like a car radiator while the non- one looks more like the gas tank filler neck on the tractor.
Zach

Janicholson · Jan 8, 2013

The top cap (red background) is for early tractors. The radiator is not pressurized. The bottom is for 7.5PSI pressurized cap on later models.
If you take your gas cap, it will be a very close fit to the (red) cap. it will not come close to fitting the pressurized neck. Since any radiator could be installed it is necessary to check the size.
Jim

Athol Carr · Jan 9, 2013

My 1941 W-4 has the top cap on its non-pressurized radiator

MisterT · Jan 9, 2013

I read through all of the replies, but so far, no one has emphasized the fact that the 2 different caps will NOT interchange.

The early style, non-pressurized radiator cap WILL interchange with the gas tank cap however.

Nebraska Cowman · Jan 9, 2013

Yup, depending which radiator you have. If your present cap will swap with the fuel cap you need the top one.

Jim Becker · Jan 9, 2013

(quoted from post at 11:36:01 01/09/13)
I read through all of the replies, but so far, no one has emphasized the fact that the 2 different caps will NOT interchange.

The early style, non-pressurized radiator cap WILL interchange with the gas tank cap however.

I thought that if not Zachary Hoyt's, certainly Janicholson's response made that abundantly clear.

MisterT · Jan 9, 2013

(quoted from post at 20:31:54 01/09/13)

(quoted from post at 11:36:01 01/09/13)
I read through all of the replies, but so far, no one has emphasized the fact that the 2 different caps will NOT interchange.

The early style, non-pressurized radiator cap WILL interchange with the gas tank cap however.

Click to expand...

I thought that if not Zachary Hoyt's, certainly Janicholson's response made that abundantly clear.

More or less, if you read between the lines, but there seems to be a lot of users of this forum who cannot read between the lines. I was merely attempting to add a little clarity.

Jim Becker · Jan 9, 2013

Good point.

Pictures of the bottom sides of the caps would have made it a lot clearer too. Unfortunately, many of the eBay listings (and other sites) only show the top.

MisterT · Jan 9, 2013

(quoted from post at 21:16:13 01/09/13) Good point.

Pictures of the bottom sides of the caps would have made it a lot clearer too. Unfortunately, many of the eBay listings (and other sites) only show the top.

That is because quite a few of those ebay sellers have very little knowledge of the product they are selling.

Ken Ind. · Jan 9, 2013

Heck I got an old VW gas cap on mine.It was that way when I got it and it works so why change it. Besides I love being a little (lot) differant than everyone else,Kenny.

Which is the correct radiator cap for a '41 H ?

Yooper Farmall

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RMOMN

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Zachary Hoyt

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Janicholson

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Athol Carr

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MisterT

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Nebraska Cowman

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Jim Becker

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MisterT

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Jim Becker

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MisterT

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Ken Ind.

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