Oil Cooler Thermostat

CarAbuser · 01-20-2020, 07:30 AM

Does anyone know if it's possible to buy just a replacement thermostat for the N54 oil cooler?

Realoem gives me the part number "11427573212" which is for the oil filter housing and thermostat so I'm assuming I just have to buy both and ditch the housing.

I want to retain the functionality of the stock thermostat and have no interest in the bypass option from BMS.

Jeef · 01-20-2020, 08:55 AM

OEM or look at the upgraded one by mosselman!

wrrush · 01-20-2020, 09:04 AM

why not just delete it and get an external thermostat with AN lines??

CarAbuser · 01-20-2020, 09:47 AM

Quote:

Originally Posted by Jeef

OEM or look at the upgraded one by mosselman!

That's the problem, I can't find the OE thermostat, only the complete housing unit including the thermostat. If that's all that's available then I'll just buy the full OE housing.

Quote:

Originally Posted by wrrush

why not just delete it and get an external thermostat with AN lines??

I don't have any problems with my oil getting too hot ever. UK summer temps rarely get above 25c and the cooler can keep up with that. My oil thermostat is currently stuck open which is basically how the BMS "thermostat" works. The problem with the always open approach is that anywhere outside of CA or FL you will end up with the oil being too cold and taking an age to warm up during winter.

Jeef · 01-20-2020, 11:01 AM

you need to buy the whole OEM thermostat housing. the internals are not for sale.

the small cap to access inside also leaks so not a bad idea to replace the whole unit.

relative4 · 01-20-2020, 07:58 PM

OP, you seem to be confusing the thermostat housing and oil filter housing. The part number above is the thermostat housing and thermostat. The filter housing is separate.

JUMAS · 01-21-2020, 01:08 PM

Quote:

Originally Posted by Jeef

you need to buy the whole OEM thermostat housing. the internals are not for sale.

the small cap to access inside also leaks so not a bad idea to replace the whole unit.

true story.

I had to get a replacement gasket from taiwan lol.

neilvan · 01-21-2020, 01:25 PM

I believe I have my oem one somewhere. PM me and we can work something out.

CarAbuser · 01-22-2020, 02:56 AM

Quote:

Originally Posted by neilvan

I believe I have my oem one somewhere. PM me and we can work something out.

I'll send a PM over now

mweisdorfer · 01-22-2020, 09:18 AM

Look at the one BMS sells

type-dRew · 01-22-2020, 11:58 AM

get the FTP replacement, should open about 20 degrees cooler but do the same job and available for about $50

Quote:

Originally Posted by mweisdorfer

Look at the one BMS sells

thats just a bypass, isnt a thermostat

autoart · 01-22-2020, 10:59 PM

I 2nd that, ftp oil cooler t stat. They also sell the cover and gasket. https://www.ftpmotorsport.com.tw/cat...s/e9x-3-series

924er · 01-22-2020, 11:53 PM

So when the oil thermostat is bypassed, how much cooler are the oil temps?

autoart · 01-23-2020, 01:09 AM

It opens the oil cooler 20 degrees earlier.

01-20-2020, 07:30 AM	#1
CarAbuser Lieutenant Colonel 469 Rep 1,536 Posts Drives: Z4 35i DCT / E92 335i DCT Join Date: Jul 2010 Location: United Kingdom iTrader: (0)	Oil Cooler Thermostat - OE Replacement? Does anyone know if it's possible to buy just a replacement thermostat for the N54 oil cooler? Realoem gives me the part number "11427573212" which is for the oil filter housing and thermostat so I'm assuming I just have to buy both and ditch the housing. I want to retain the functionality of the stock thermostat and have no interest in the bypass option from BMS.
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01-20-2020, 08:55 AM	#2
Jeef Lieutenant Colonel 388 Rep 1,945 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	OEM or look at the upgraded one by mosselman!
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01-20-2020, 09:04 AM	#3
wrrush Second Lieutenant 24 Rep 213 Posts Drives: 2007 335xi Join Date: Jun 2011 Location: Maryland iTrader: (1)	why not just delete it and get an external thermostat with AN lines??
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01-20-2020, 11:01 AM	#5
Jeef Lieutenant Colonel 388 Rep 1,945 Posts Drives: AW E92 335i Join Date: Nov 2008 Location: San Diego, CA iTrader: (6)	you need to buy the whole OEM thermostat housing. the internals are not for sale. the small cap to access inside also leaks so not a bad idea to replace the whole unit.
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01-20-2020, 07:58 PM	#6
relative4 Major 611 Rep 1,272 Posts Drives: '08 335xi E90 MT stage 1+ Join Date: Feb 2019 Location: Denver, CO iTrader: (0)	OP, you seem to be confusing the thermostat housing and oil filter housing. The part number above is the thermostat housing and thermostat. The filter housing is separate.
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01-21-2020, 01:25 PM	#8
neilvan Major 858 Rep 1,363 Posts Drives: 09 E90 335i M-Sport 6MT RWD Join Date: Nov 2017 Location: Ontario, Canada iTrader: (0) Garage List 2007 BMW E61 530xi [0.00] 1993 Mazda Miata [0.00] 2009 BMW E90 335i [0.00]	I believe I have my oem one somewhere. PM me and we can work something out.
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01-22-2020, 09:18 AM	#10
mweisdorfer Major General 1903 Rep 6,968 Posts Drives: 2007 Black/Black 335i e90 Join Date: Apr 2011 Location: Holly, MI iTrader: (0) Garage List 2007 BMW E90 335i [0.00] 2008 bmw x5 [0.00]	Look at the one BMS sells
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01-22-2020, 10:59 PM	#12
autoart Colonel 347 Rep 2,281 Posts Drives: 2009 335i e90 M/ 22 X3 Join Date: Oct 2010 Location: socal iTrader: (8)	I 2nd that, ftp oil cooler t stat. They also sell the cover and gasket. https://www.ftpmotorsport.com.tw/cat...s/e9x-3-series
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01-22-2020, 11:53 PM	#13
924er Colonel 352 Rep 2,050 Posts Drives: e92 335i '10 Join Date: Feb 2014 Location: Socal iTrader: (0)	So when the oil thermostat is bypassed, how much cooler are the oil temps? __________________ '10 e92 N54 DCI intakes, ER chargepipe, TIAL BOV, VRSF 5in FMIC, BMS Downpipes COBB e30
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01-23-2020, 01:09 AM	#14
autoart Colonel 347 Rep 2,281 Posts Drives: 2009 335i e90 M/ 22 X3 Join Date: Oct 2010 Location: socal iTrader: (8)	It opens the oil cooler 20 degrees earlier.
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