Good Morning Michaelluscher!
Thanks for the comments. The story on sizing is there are roughly 3 main sizes with spin-on filters (with some tolerance of course). Those are
approximately 2.50in OD, 3.00in OD and 3.875in OD with the specific model falling somewhere in that range. The standard OIl Udder model fits anything under 3.125" in OD. Which is most engines under 6.0L (there are some odd balls!) and also covers the 2.5in class. It can do this because it magnetically holds itself to the bottom of the filter and, being a shore 60A NBR rubber its very flexible. So it will conform around the smaller filters and stretch over the larger ones in that range. Unfortunately, that same size can only stretch so far, once its too tight the drain ribs no longer work and it seals around the filter. Therefore we are currently designing the Oil Udder XL for the 3.875in filter class. These are most diesels as well as 3500, 4500 and 5500 larger gas engines such as the ford V10 in many AT&T trucks...and Hellcats
Here are a few filters below for the standard Oil Udder. All filters under 3.125IN OD....
- Bosch Oil Filter 3330 - 2.9375IN OD
- Mobile 1 M1-103A - 2.6875IN OD
- Wix 51024 - 2.9375IN OD
Here are a few the Oil Udder XL...For Filters above 3.125in and below 3.90IN (Pro-Order only right now, in development!)
- Motorcraft FL820S - 3.875IN OD
- Mopar MO899 - 3.875IN OD
- Mobile 1 M1-303 - 3.68IN OD
I hope this helps!
PS. Depending on your application, packaging etc you may want a drain kit if there is a lot of oil. You can also use a standard Oil Udder and then cut off the bottom nipple. This will work well and give you a nice drain option for a lower price. It's a bit more difficult to plug the hole after or attach a tube.
