What’s the smallest screw on oil filter you have seen?

[Owen Lucas]

Smallest screw on oil filter for any engine, not just automotive.

I found this: https://bobistheoilguy.com/forums/threads/small-engine-tiny-oil-filter.176081/

Briggs and Stratton 795990

Anything smaller out there?

 

[Passport1]

The ones on these engines;

 

[Brian123]

Smallest screw on oil filter for any engine, not just automotive.

I found this: https://bobistheoilguy.com/forums/threads/small-engine-tiny-oil-filter.176081/

Briggs and Stratton 795990


View attachment 94812

Anything smaller out there?

Why are you posting a Link to a Thread that was Locked?

 

[ZeeOSix]

Why are you posting a Link to a Thread that was Locked?

It was locked just because it was old. Lots of old threads are locked so people don't dig them up and post in them. If it would have been posted in, then it would be locked by a Mod and told to go start a new thread.

 

[Jetronic]

The smallest I've installed is one on a Daihatsu copen 0.7l turbo.

2.5" high and 2.5" wide. They sell slightly larger filters but those are for a 1.3 and can't be fitted to the 0.7 without major surgery.

 

[Brian123]

It was locked just because it was old. Lots of old threads are locked so people don't dig them up and post in them. If it would have been posted in, then it would be locked by a Mod and told to go start a new thread.

Ok, I see what you are saying, I remember looking at some old threads and they were all Locked. To the Op, oils, fuels, and engine designs to a certain extent have evolved to an extent that smaller oil filters are fine.

 

[Owen Lucas]

The smallest I've installed is one on a Daihatsu copen 0.7l turbo.

2.5" high and 2.5" wide. They sell slightly larger filters but those are for a 1.3 and can't be fitted to the 0.7 without major surgery.

That's the same size as the lawn mower engine filter I posted...for a car! Wow.

 

[Zee09]

For or a full sized car the one used
In the old Trans Am 1981 301 turbo was tiny for the day.

 

[Owen Lucas]

Ok, I found a really tiny one: 18mm x 30mm? No pictures of the insides.

Apparently it’s a fuel filter but also used as an oil filter by miniature engine hobbyists.

Thanks to @Passport1 for the recommendation.

Metal Fuel Filter for Inline Four-cylinder Water-cooled Gasoline Engine / Hydraulic Engineering Machinery Model (SKU: 33ED3030434, 333085161ED, 33ED3104107)

Features: .Specifications: Diameter: 18mm; Height: 58mm .The fuel filter is equipped with 1 hex wrench and 2 screws for easy installation. .Scope of Application: It is suitable for installation in front of the fuel inlet pipe fuel pump of the engine model, and also suitable for installation in...

www.enginediy.com

 

[RyanY]

The Fram PH6017A is pretty small, but not sure if it is as small as the one in the first post.

https://www.fram.com/parts-search/PH6017A

 

[tcp71]

Mazda skyactiv filters are tiny. 2.67”x2.67”. For a 2.5l engine and 10k miles+.

https://www.fram.com/parts-search/XG6607/

 

[Owen Lucas]

Ok found another tiny filter, was on the same miniature engine hobbyist website. Apparently it is filled with cotton to "filter the oil" Not sure how effective that can be.

Dual Oil Filter Cleaner for TOYAN FS-L200 Two-cylinder 4-stroke Nitro Engine Model

Dual Oil Filter Cleaner for TOYAN FS-L200 Two-cylinder 4-stroke Nitro Engine ModelFeatures:The shell of the oil filter is made of aluminum alloy, and filter cotton is used internally, which can be disassembled and easily replacedThe dual oil filter size is 23(L) x 11(W) x 39(H)mm, and the top...

www.enginediy.com

 

[Pablo]

Pretty sure the filter for my Kawasaki twin is larger than Honda/Subie 4-6

 

[Donald]

JD lawn tractor uses a small filter

 

[DGXR]

The oil filter on my mom's 1996 Corolla was tiny, for an automotive engine. Only slightly larger than the yellow filter pictured in the first post.

 

[mpack88]

Whatever filter a 2000s Mazda protégé uses. I could only find it on Fram or Bosch at the time.