Oil filter thread

Mark-Ia · Nov 10, 2015

Can anybody tell me what size of thread a spin-on type oil filter uses? I think it's 1/2", but it's not pipe thread.

Steve in VA · Nov 10, 2015

On what? My JD 5303 had 2 different threads. I know because they gave me the wrong one first.

Russ from MN · Nov 10, 2015

Some are 1/2 pipe, some are metric. I think if you go to the wix website and find the filter and look at the details it will tell you.

tim s · Nov 10, 2015

There are many different threads available, my waste oil furnace has a 1 inch pipe thread filter..

ericlb · Nov 10, 2015

like tim said there are many different thread sizes, both american and metric depending on what the filter is going on, what brand of filter is it? if you can get a cross to a napa number or carquest they can tell you what thread the filter is supposed to be, you could be facing several problems if it wont fit, ive even seen a brand new filter that somehow escaped having threads cut in it at all, if your crossing numbers from one brand to another the cross reference may be wrong too what is the filter for?

jeffcat · Nov 10, 2015

Let us keep this really simple. Go to your local lawn mower repair shop and go out back in his junk pile. On a Briggs twin Vtech engine or a briggs engine with a filter, just unscrew the oil filter. Now with a pair of vice grips or even better a large enough eazy out, unscrew the pipe. Do not damage the threads. Now what you have in your hand is a 1/2 inch STRAIGHT thread pipe. You can screw a nut from end to end like a bolt. Been there and done it. I had a Vtech with out a filter but there was a blank out plate. With the pipe you can put on a filter. Have fun!

Mark-Ia · Nov 10, 2015

Ok, here's the deal. I've got a 1931 John Deere GP with the brass oil filter. I'm told you can screw out the brass filter and then screw a hex nipple in it's place and use an automotive type spin on filter. Probably use one for a GM as that is all I have around here. I bought a 1/2" male pipe hex nipple, but the thread size isn't the same. Probably need to go to a hydraulic hose shop for the correct fitting.

Andy Martin · Nov 10, 2015

So I'm not much of a JD guy, but why would you remove a cleanable filter on a classic tractor to put on one you can't clean?

Nebraska Cowman · Nov 10, 2015

I use the Wix website filter lookup. Once you find the filter you want there is a link you can click that will tell you all the specs including thread size.
Like this

dbernie · Nov 10, 2015

Hi,
Don't know specifics, from my understanding,
although I may be very wrong so please don't
blast me:
filter may 'mechanically' fit,
many filters have internal 'bypass' should
filter clog, some designed to filter with certain
pressure applied, may restrict flow if improper,
and other oddities designed in filters.
To modify a filtration system, myself,
I would get as many specs as possible,
and then, as others stated, go to WIX or other
websites to try to match your needs.
I would hate to see an engine starve for oil,
simply because the filter was designed
to operate under higher psi conditions.
Just a thought, disregard if inapplicable to your situation.
Take care,
Danny

Oil filter thread

Mark-Ia

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Steve in VA

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Russ from MN

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tim s

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ericlb

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jeffcat

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Mark-Ia

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Andy Martin

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Nebraska Cowman

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dbernie

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