Radium Oil Catch Can Not Fitting Correctly...

Chris97277 · 12-16-2025, 02:28 PM

I recently bought a radium oil catch can for my 135i and after properly installing most of it, one of the AN fittings is sitting just behind my BOV and is not allowing the hose to properly route onto the fitting. See photos of what I am trying to describe.

I have not been able to find posts that have this same issue, but I am thinking about buying a 10AN fitting 45 degree and see if that works, but then im afraid if I do that then the fitting will hit the power steering reservoir and still not allow the hose to fit properly lol ...

Does anyone have any suggestions on what to do??

ShocknAwe · 12-16-2025, 09:24 PM

Can you use a banjo and then. 90 deg fitting?

How about clocking the OCC?

The problem is likely not the OCC kit but your CP/BOV ultimately. Radium probably designed it with diverters in mind.

iDontRemember · 01-01-2026, 08:02 PM

Easy fix- see my IG post, I ran into a similar issue with the auxiliary radiator. I used a couple of threaded stand offs to raised the catch can and get some clearance.

12-16-2025, 02:28 PM	#1
Chris97277 Registered 2 Rep 2 Posts Drives: Bmw 135i Join Date: Jan 2022 Location: Chino iTrader: (0)	Radium Oil Catch Can Not Fitting Correctly... I recently bought a radium oil catch can for my 135i and after properly installing most of it, one of the AN fittings is sitting just behind my BOV and is not allowing the hose to properly route onto the fitting. See photos of what I am trying to describe. I have not been able to find posts that have this same issue, but I am thinking about buying a 10AN fitting 45 degree and see if that works, but then im afraid if I do that then the fitting will hit the power steering reservoir and still not allow the hose to fit properly lol ... Does anyone have any suggestions on what to do?? Attached Images
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12-16-2025, 09:24 PM	#2
ShocknAwe 1Addict 5380 Rep 9,253 Posts Drives: N54 E82, M57 E70, 964 C4 Join Date: Jul 2012 Location: Charleston iTrader: (22)	Can you use a banjo and then. 90 deg fitting? How about clocking the OCC? The problem is likely not the OCC kit but your CP/BOV ultimately. Radium probably designed it with diverters in mind. __________________ 2010 E82 1 Series M Clone Hydra Performance augmented OEM+
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01-01-2026, 08:02 PM	#3
iDontRemember Ding Dong! 158 Rep 137 Posts Drives: AW 1M Join Date: Feb 2019 Location: Florida iTrader: (0)	Easy fix- see my IG post, I ran into a similar issue with the auxiliary radiator. I used a couple of threaded stand offs to raised the catch can and get some clearance.
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