Fuel filter preference

[JCM 10,555]

Looking to stock up on fuel filters for Kohler Magnums 12-20 HP &  Onan 20 HP.  I prefer a smaller filter which seem to be harder to come by than the larger ones. Does the size matter ? I usually buy at NAPA.  Also a clear type filter to visually check flow.   Thanks guys

[WHX?? 54,123]

I just buy them in bulk since I only have two tractors...  

The jungle or pick them them up at shows five for 10. If the tank has crud in it I'll use the bigger ones. Onans get a bigger one too. Always something in clear. 

Prolly more important to change them regular. 

[JCM 10,555]

6 minutes ago, WHX?? said:

I just buy them in bulk since I only have two tractors..

 

[JCM 10,555]

57 minutes ago, WHX?? said:

 

Prolly more important to change them regular. 

What do you consider regular Jim ?

[JoeM 9,473]

I really don't change fuel filters to often, I try to use good non e fuel and keep my gas clean in the cans etc. 

 

Larger Filter

WIX 33001

 

Smaller Filter

WIX 33011

[Bill D 2,552]

I use a Briggs filter, P/N 691035.  It only has 1/4" hose connections and gives a clean look when installed.  I buy them in bulk.

Edited January 18 by Bill D

[Retired Wrencher 6,353]

Jim as rule I have been buying the Briggs & Stratton 150 Micron mini filters. There small and easy to fit any where. I buy them in bulk save time and $$$. Not much gets through a 150 Micron filter.

Edited January 18 by Retired Wrencher

[squonk 45,181]

Careful buying those cheap clear filters at the tables at tractor shows. The media in them has been known to fall apart and ending up in your restored fuel pumps and carbs.

 

Taryl has a good video on the subject

 

 

Edited January 18 by squonk

[ebinmaine 76,881]

1 hour ago, Bill D said:

I use a Briggs filter, P/N 691035.  It only has 1/4" hose connections and gives a clean look when installed.  I buy them in bulk.

 

I've been using Stens for years and been ok. When those are gone we're switching to Briggs filters.  

 

The 691035 are  $6.79 each shipped, at billsplaceshop.com 

 

17 minutes ago, Retired Wrencher said:

Briggs & Stratton 150 Micron mini filters

 

These offer great protection but are not see through. Also clog more often so remember to change them more often to avoid issues.  

 

$7.79 each shipped, at billsplaceshop.com 

[ebinmaine 76,881]

@squonk thanks for posting that. 

 

Very important information.  

 

 

 

 

8 hours ago, JCM said:

What do you consider regular [change interval]

 

With a clean fuel tank that's left completely full or empty you'll get less condensation issues. 

Burn the NON ethanol like you have been. 

 

On a tractor you only use occasionally you could definitely leave the filter several years. 

 

On a regular use mower, at least annually.  

Trailer rider or plow rig maybe every couple years? 

 

 

[sqrlgtr 2,035]

I have went to these after a complete fuel system cleaning (carb, tank, new lines and rebuilt/cleaned fuel pump). 70 micron filtration. I like that they are transparent, no media to break down and like the looks of them also, but that's just personal preference. 

 

Edited January 18 by sqrlgtr

[peter lena 9,665]

@JCM  also prefer the clear  fuel filters , have  2  on each tractor , also on  generator ,  snowblower , one at tank outflow ,another close to carb , years back now , experimented with  , fresh hoses , system clean out ,and sta bil  in all my fuel , guess what  ? never had any more debris in any filter  or carb bowls , as stated , love a REPEDITIVE PROBLEM ?  its always there  , thats your leader  to the cure . have also suggested  , replacing the  frame length  fuel line , to a 5/16  " steel brake line ?  eliminate all that , possible hose break down , amazed  at , not trying anything different  , if you paint it  red / black  it disappears. add  an ounce or two  , of stabil  , and no rubber break down at all  , remember  I replaced all  old hoses , no fuel issues at all  . imagine  no fuel hose , debris / related  , super lubed , hydraulic oil  in  choke and throttle cables , with  spring pull assist  , working for years  , kinda like  mule drive bearings , snowing now  , hope my plow blade isn't frozen with rust , or snow slide off issue , clean filters , pete 

[WHX?? 54,123]

11 hours ago, JCM said:

What do you consider regular Jim ?

Don't know really ... every so many tanks or gallons? Every oil change? Every Year? Hours on the clock? Might be different between metal and plastic tanks. 

Dan and I were tooling around at show on Betty and she just quit. Fuel pump? Nope filter was just plugged solid. Never saw one that bad so maybe just change at every show. Betty goes to every show and gets used a lot by the gals. Somebodies gotta go get ice or the flea market she gets hopped on. More hrs on her than all our tractors put together. 

Edited January 18 by WHX??

[WHX?? 54,123]

2 hours ago, squonk said:

Careful buying those cheap clear filters at the tables at tractor shows. The media in them has been known to fall apart

Only time I had that happen was a Fram ... go figure. 

They can be leakers right out the box too. 

 

 

These are the kind I try to buy.

[Retired Wrencher 6,353]

On 1/18/2026 at 6:58 AM, ebinmaine said:

 

I've been using Stens for years and been ok. When those are gone we're switching to Briggs filters.  

 

The 691035 are  $6.79 each shipped, at billsplaceshop.com 

 

 

These offer great protection but are not see through. Also clog more often so remember to change them more often to avoid issues.  

 

$7.79 each shipped, at billsplaceshop.com 

Eric, when I like about them, they don’t take up much room also you can hide them if you want. I get them off of eBay and bulk 5 to 10 pack. I think it is. Enjoy your day buddy.