This is a bit dated, so I don't know if some of the part#'s may have be "upgraded". namely the "engine branded" ones.
I just haven't been inclined to search through them all again-

"Briggs/Kohler type" 3/4" X 16 threads 8-11 PSI Bypass Gasket 2.734"OD X2 .430"ID 0.226" thick
Length" Wix Purolator Hastings Kohler B&S Baldwin MotorCraft AC
2.3" 57035 NA LF503 2805001 492932 B7165 NA NA?
2.7" 51056 L35310 LF302 1205001 492056 B1410 NA PF2210
3.4" 51348 L10241 LF157 5205002 491056 BT223 FL793 PF53
4.8" 51516 L20195 LF134 NA NA B243 FL400A PFL400A

"Honda type" 20 MM X 1.5 MM threads 8-11 PSI Bypass Gasket 2.475"OD 2.173"ID 0.233" thick.
Length" Wix Purolator Hastings Honda Baldwin JD Casite AC MotorCraft Walmart
(2.6855" OD) 2.6" 51365 L14612 LF113 NA B1400 NA CF113 PF1237 FL816 ST6607
(3.25" OD) 3.2" 51334 L14459 LF461 15400PCX004 B1421 AM101378 NA PF1127 FL803 ST3593A
(2.6855" OD) 3.2" 51356 L14610 LF240 NA B1402 NA CF240 PF2057 FL822 ST7317
(2.6855" OD) 3.4" 51357 NA NA NA NA NA NA NA FL821 NA
(3.25" OD) 4.1" 51344 L24458 LF386 NA B161 NA NA NA FL799 NA

Kawasaki 3/4" X 16 threads Gasket 2.475"OD 2.173"ID 0.233" thick.
Length" Wix Purolator Hastings Baldwin AC MotorCraft JD Walmart
2.98" 51394 L14476 LF410 B33 PF1233 FL836 AM107423 ST4967
3.4" 51396 L14477 LF413 B37 NA NA NA ST4386

WIX makes NAPA Gold and CarQuest Blue filters. (identical except for the paint job)
For a NAPA filter, use the last 4 digits of the Wix#
For a CarQuest filter, replace the first 2 digits of the Wix# with 85
Example. Wix 51348 becomes CarQuest 85348 or NAPA Gold 1348

For my Briggs engines I use Purolator PL10241 and pay around $7 each.

Before you buy aftermarket there are some informative articles on the web regarding filter construction, filter features, and component quality brand by brand that should be considered.

All in all... if the filter fits the thread, there's physical room, AND the filter's features equal OEM then it is your risk to take. I'd have to know that the filtering material is equal in specification, filtering area, and quality to OEM and that the bypass valve has the same spec as OEM.

I've found that if you look around OEM filters are not much more than aftermarket ones anymore. The real JD filter for the Kwacker twin in my JD costs me $6.75 so I'm not willing to take any time to see if I can find an equal quality filter for less than that. Heck the crap Fram equivalent is $4.19 at AutoZone and I'd never put a Fram on anything. Why take a chance for a couple bucks saved every year?

While in warranty I never use anything other than OEM filters.

At least some JD filters have been made by FRAM.
Lowest bidder.

All OEM filters are made by contractors to the EXACT specifications of the manufacturer who contracts them.

Fram chooses to make the cheapest and lowest quality filters for their retail market, but that doesn't mean they can't make a top quality filter when contracted to do it.

If JD contracts Fram and it says JD on the filter then JD determines the quality of the filter and stands behind the filter.

Foxconn manufactures some low quality junk electronics and they also manufacture iPhones, iPads, iPods, and iMacs. The quality depends on who's paying them and what specifications are set.

This post was edited by justalurker on Sun, Sep 8, 13 at 19:29

Suggest you study the
Moss-Magnuson Warranty Act.

IF the filter manf. lists it for your application, OEM can't require you to use theirs.

China can make excellent quality products IF they are required to.

Bill,

I am more familiar with the Moss-Magnuson Act then you could imagine and have been involved in legal cases regarding that act.

I suggest you READ my post... "While in warranty I never use anything other than OEM filters"

Anywhere in that statement that I said that I thought I had to? It is MY choice to ALWAYS use OEM parts except in circumstances where I decide that a third party part is superior to OEM or provides a feature that I decide I want.

By using OEM filters I eliminate any warranty delays if warranty is denied. If you'd rather pay a lawyer to litigate denied warranty coverage with a manufacturer and wait till that is adjudicated then that is your choice and I support your right to make it.

I've held positions where my job was to evaluate third party parts and you wouldn't believe how often third party parts fail to meet the OEM specifications regardless that the packaging says meets or exceeds manufacturer specifications. Third partiy manufacturers(?) are not privy to the OEM manufacturer's specifications or designs and they may use materials that are inferior or different than the OEM uses. They reverse engineer(?) the part, blister pack it, and put it on the shelf. Patents? We don't need no stinkin' patents... the Chinese are infamous for counterfeiting anything and everything regardless of any legal protection that exists for the original manufacturer.

There are lots of people who want to pay less for something and that's fine... unless when you pay less and get less and don't know it and suffer for doing it. When people unilaterally recommend doing or buying something that less knowledgeable people might blindly follow it does everyone a disservice and so does you assuming what anyone on a forum knows or doesn't know.

A dollar's worth for a dollar is still the best deal there is. Those who want to pay fifty cents and get a dollar's worth usually end up paying seventy five cents and getting fifty cents worth. Was true when my Dad told me that for the first time in the 50's, it's still true today, and it will always be true.

So you save your buck or two on oil filters and I'll pay a couple bucks more for an OEM filter I need once a year and revel in my piece of mind.

This post was edited by justalurker on Mon, Sep 9, 13 at 0:18

I use the Purolator because it has a pretty paint job :^)

Yea, those Purolators are sano looking all white with the blue trim. Easy to find on the engines too.