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Rich Biebel · 05-21-2019, 09:01 AM

51060 has an anti drain back valve and 51061 does not.

Same filter other than that.

51060 is used for horizontal type mounting....
51061 is for vertical type mounting....

That "valve" is really just a red silicone rubber flap...

You can look at the top and see it covering the holes on any Wix filter that has the anti drain back feature...

Lots of machines mount the filter off the side......and many vehicles.

Without the valve you'll hear a nasty rattle everytime you start your engine for a couple seconds...or a valve that's not working...

I had a 454 pickup that was 4 wheel drive and some various brand filters did not do a good job of retaining oil …and if I heard the rattle I'd replace that filter.....

Wix never had that issue...

05-21-2019, 09:01 AM	#16
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,275 Likes: 25 Liked 510 Times in 200 Posts	Re: Oil bypass, do you block it? 51060 has an anti drain back valve and 51061 does not. Same filter other than that. 51060 is used for horizontal type mounting.... 51061 is for vertical type mounting.... That "valve" is really just a red silicone rubber flap... You can look at the top and see it covering the holes on any Wix filter that has the anti drain back feature... Lots of machines mount the filter off the side......and many vehicles. Without the valve you'll hear a nasty rattle everytime you start your engine for a couple seconds...or a valve that's not working... I had a 454 pickup that was 4 wheel drive and some various brand filters did not do a good job of retaining oil …and if I heard the rattle I'd replace that filter..... Wix never had that issue... __________________ Rich Biebel S/C 1479 Last edited by Rich Biebel; 05-21-2019 at 09:10 AM.