Bosch Oil filter 3330 on the ST1100

[Sunday Rider]

Has anyone used the Bosch 3330 oil filter on the ST1100? I got a killer deal on them as I saw them as one of the alternative oil filters to OEM sometime ago. I've been using the Bosch 3323 for the last few years. In comparison to the 3323, the 3330 is shorter and wider than the 3323.

 

[Al st1100]

Has anyone used the Bosch 3330 oil filter on the ST1100? I got a killer deal on them as I saw them as one of the alternative oil filters to OEM sometime ago. I've been using the Bosch 3323 for the last few years. In comparison to the 3323, the 3330 is shorter and wider than the 3323.

As far as I can see they both use the same premium filter media so I would suspect the other internal are the same.

 

[Sunday Rider]

As far as I can see they both use the same premium filter media so I would suspect the other internal are the same.

I am more worried about the O ring seal as it is slightly larger in diameter than the 3323.

 

[Uncle Phil]

I am more worried about the O ring seal as it is slightly larger in diameter than the 3323.

That would concerned me also.

 

[Sunday Rider]

That would concerned me also.

I guess I will wait for the summer oil change and will try to see how it lines up to the smooth seal surface on the engine.

 

[Al st1100]

I am more worried about the O ring seal as it is slightly larger in diameter than the 3323.

take a light coat of oil on the engine oil filter mounting surface, lightly screw on the oil filter dry just enough to make contact and take it off. The oil should leave a picture of how much and where there is contact. That should tell if there is enough sealing surface.

 

[ST Gui]

I've been using the Bosch 3323 for the last few years

I've been using a similar/same filter on my ST1300 and nary a leak. (Different animal.) But another possible concern is the shape of the bottom of the filter with the return (?) holes for the oil.

A few years ago Bosch inexplicably released a run of ST compatible filters that have that area in a convex shape instead of the concave normal concave shape. The vexing part keep the O-ring from even touching the block. Obviously that run was not compatible.

Thinking it had been some time since that faux pas I bought one and — it didn't work. The convex was slight. Enough so that I wasn't sure it was a problem filter. Returned and all was well.

If your filter score was a fairly recent batch and there's not a inch of dust on the box then it's probably not an issue. A quick check and you'll know.