BOSCH premium 3312 new oil filter cut open

[Alex123]

With the constant manufacturing changes on oil filters I figured I’d get a Bosch and see what’s new with them.

I was surprised by this one compared to the other c&p’s.

COO is china and the media seems to be synthetic with plastic cage. Not syn blend cellulose like I was expecting. I believe the claim is 99% at 20.

Center has holes and coil spring. No excess glue and the can is very thick.

Thoughts and opinions?

 

[Alex123]

Box

 

[WarEagle]

Looks pretty good to me. Website doesn’t give a micron rating but AI says it is 99% at 20 like you said which is nice if true. Website does mention it’s a synthetic blend. I’ve never seen these in the wild but haven’t looked for them either. Where did you find this and how much? Thanks for the C&P

 

[Fair enough]

They copied the Toyota bypass spring parts almost exactly, and some factory in China doesn’t know the Boss copy plastic mesh goes on the inside by the center tube. Maybe Bosch buys Mann Hummel Boss media and assembles it in China, inside out, the micron rating seems nice.

 

[Zee09]

Looks great- I can see a bad comment on the threads- a nothing burger , but this is a big step-up.
Very well executed.
I'd only buy these at the retail level to avoid old stock. Thanks for the CUT!
Got some Denso action too- How much?

 

[Zee09]

They copied the Toyota bypass spring parts almost exactly, and some factory in China doesn’t know the Boss copy plastic mesh goes on the inside by the center tube. Unless they made some new discovery, which seems unlikely.

You mean they copied Denso

 

[MurkyAsparagus]

Looks great! I’d run these in a heart beat.

The bypass looks very similar to what Denso uses, interesting.

Thanks!

 

[DannyM]

With the constant manufacturing changes on oil filters I figured I’d get a Bosch and see what’s new with them.

I was surprised by this one compared to the other c&p’s.

COO is china and the media seems to be synthetic with plastic cage. Not syn blend cellulose like I was expecting. I believe the claim is 99% at 20.

Center has holes and coil spring. No excess glue and the can is very thick.

Thoughts and opinions?

Looks Great . . Where did you purchase this one ?

 

[Alex123]

Purchased at rock auto for $3.87

 

[DannyM]

.

The price for the Amazon 3323 Premium went up to almost 12 from I think half of that just recently for the Purolator version or Mexican one so I wonder if the price jump was for this nicer/higher quality model. If they would just put the full synthetic with backing description right on the listings then it would make it easier for people to buy it IMO. The Rock Auto 3323 was always in the $3 range fwir and is now $5.

Wondering about the backing on the outside of the media if this is a positive feature compared to typical underside backing.

 

[ZeeOSix]

Looks pretty good to me. Website doesn’t give a micron rating but AI says it is 99% at 20 like you said which is nice if true.

A.I. can gather old information, and filters change so fast that old info can still be all over the 'net. If the efficiency isn't on the box or on the maker's website (which can still be wrong as seen with Purolator's website), then who knows where the info came from. The old Bosch Premiums were high efficiency, so it could be that's where the efficiency claim is coming from.

 

[ZeeOSix]

Wondering about the backing on the outside of the media if this is a positive feature compared to typical underside backing.

Think I've seen the mesh on the outside before on a different filter. It shouldn't matter as it still gives rigidity to the media.

 

[martinq]

Wow. That media looks like ... Wow! You got an audible "Wow!" out of me, so glad no one is home to hear it.

 

[martinq]

Are you SURE that star besides the "99% efficiency" on the box doesn't connect anywhere? Inside?

 

[Fair enough]

The polymer mesh on the outside only works if it is glued well to the fluffy stuff underneath. Even then, it makes not much sense at all. But it would be easy to wrongly place it inside out. I wouldn’t be surprised if Bosch ships Purolator made Boss media to their filter factory in China.

 

[Zee09]

.

The price for the Amazon 3323 Premium went up to almost 12 from I think half of that just recently for the Purolator version or Mexican one so I wonder if the price jump was for this nicer/higher quality model. If they would just put the full synthetic with backing description right on the listings then it would make it easier for people to buy it IMO. The Rock Auto 3323 was always in the $3 range fwir and is now $5.

Wondering about the backing on the outside of the media if this is a positive feature compared to typical underside backing.

Nothing negative about it...
Looks better than the Fram slop we had with First to Last Brands

If i had @KCJeep credit card I'd buy a few hundred

 

[ZeeOSix]

I wouldn’t be surprised if Bosch ships Purolator made Boss media to their filter factory in China.

I emailed and there's no connection these days between Bosch and Purolator like the old days. But it's possible they get just media from the same source in the crazy world of oil filters, lol.

Post in thread 'Bosch 3323 Cut Open' https://bobistheoilguy.com/forums/threads/bosch-3323-cut-open.402304/post-7448712

 

[Alex123]

Are you SURE that star besides the "99% efficiency" on the box doesn't connect anywhere? Inside?

Sorry I should have looked better.

 

[McRightclick]

Doesn't the mesh need to be inside the media?

 

[martinq]

Sorry I should have looked better.

View attachment 332697

There we go! So 99% at 20u per ISO 4548-12. That's my minimum spec for a "good" oil filter. Thank you!