Can the oil thermostat cover gasket be purchased?

E90lmao · 02-17-2022, 01:20 PM

Quote:

Originally Posted by feuer

Quote:

Originally Posted by jadams161

Malo industries sells them too Fast shipping from Canada. The crank seal plate is amazing too.

Very nice! https://www.maloindustries.com/

I just ordered one I'll see how it works out! I'll update this post when I get it installed.

david in germany · 02-20-2022, 03:08 PM

If anyone is interested. The difference between the felpro version and the o-ring.
https://www.reddit.com/r/E90/comment...&utm_term=link

mj6234 · 02-21-2022, 07:50 AM

The one in the reddit post is only rated up to 100*C. I wouldnt use that for this application as we all know our oil runs over that. Seems like viton would be a much better material choice.

https://www.amazon.com/Mr-Ring-3X37-...18&sr=8-3&th=1

I would guess this standard o-ring would work as well.

https://www.amazon.com/220-Viton-Rin...ustrial&sr=1-1

IllSic_Design · 02-21-2022, 02:49 PM

you def want to use Viton o-rings on these cars

david in germany · 02-27-2022, 01:00 PM

Quote:

Originally Posted by mj6234

The one in the reddit post is only rated up to 100*C. I wouldnt use that for this application as we all know our oil runs over that. Seems like viton would be a much better material choice.

https://www.amazon.com/Mr-Ring-3X37-...18&sr=8-3&th=1

I would guess this standard o-ring would work as well.

https://www.amazon.com/220-Viton-Rin...ustrial&sr=1-1

Yep, one week and it is already weeping.

soulcrusher · 03-02-2022, 08:30 AM

Quote:

Originally Posted by E90lmao

I just ordered one I'll see how it works out! I'll update this post when I get it installed.

How'd it go? Is it just one seal?
Oh. 10$ shipping

soulcrusher · 03-02-2022, 08:41 AM

thanks for the posts!

arnas · 03-20-2022, 01:06 PM

Hi guys,

I am also facing oil thermostat gasket leak and was doing some research on the internet. I found this post which was very helpful. So I started to look for Viton 43mm x 3mm o'ring. I was able to found that BMW make this o'ring as replacement part for K series motorcycles water pump I guess.

Replacement part is called "O-RING 43X3-N-FPM 85" and OEM part number is 07 11 9 905 382.

So I will try to order it at my local BMW dealer and hope that it will fit. I will update how it goes after installation.

Also, maybe anyone know if this gasket is the same for F series chassis?

soulcrusher · 03-21-2022, 12:43 PM

These viton o-rings are backordered. Have been backordered for a long period now, extending to May 2022.

Anyone here have spares they can send me?

Im in Miami, FL.

gster109 · 03-23-2022, 02:56 AM

Quote:

Originally Posted by feuer

Very nice! https://www.maloindustries.com/

Sold out, RIP.

By chance do you or anyone else here know if the thermostat gasket leak will mask itself as a oil cooler o ring sweating?? the drivers side one mainly. One single drop of oil.

ichibanset · 04-18-2022, 03:50 PM

1 7/16 ID x 1 11/16 OD x 1/8 also fits.

mozmann · 12-31-2023, 04:28 PM

Any idea about the torque spec for the screws? I replaced the old one with the viton gasket, torqued the bolts to 16.5 Nm slowly, weeping at idle. I am afraid to over tighten and snap the screws...

lowrydr310 · 01-03-2024, 11:57 PM

Quote:

Originally Posted by mozmann

Any idea about the torque spec for the screws? I replaced the old one with the viton gasket, torqued the bolts to 16.5 Nm slowly, weeping at idle. I am afraid to over tighten and snap the screws...

Not sure but I replaced mine a few weeks ago and it is not leaking. You're more likely to strip the threads in the aluminum housing than snapping the screws. I just went based on feel; I have the torque specs for the oil filter housing and oil cooler thermostat bolts so I used them, but for the thermostat cover bolts I used a 1/4" drive ratchet with a short extension and the appropriate torx bit. It felt far less than 16Nm though. Did you go back and forth between the two bolts tightening each in sequence?

As of January 2024 I have four extra o-rings since the minimum order was 5 (for $16 including overnight shipping.) Happy to share if anyone needs one, no charge, just PM me.

PMT_BOI · 01-29-2024, 12:09 AM

Hey guys Im a new bmw owner
and I just replaced OFHG on my e92 335i (n55) I made the mistake of opening the thermostat lid so now I have a leak there

My question is probably a dumb one... but do I drain fluids again to replace this gasket???
I just put fluids in as well as bled coolant and primed the engine

Malo_Industries · 03-07-2024, 07:28 AM

Sorry guys, I keep a little more inventory of these now.
If, I ever run out again it should only be for 3 weeks max

https://www.maloindustries.com/produ...thermostat-lid

Stubbie Blue · 04-11-2024, 06:22 PM

I did the 2 OFHGs on my 2012 135i N55, but after a few months I saw a buildup of grime from the oil cooler thermostat cap.

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So I got some FKM fluoro-rubber O-rings from AliExpress.

https://www.aliexpress.us/item/3256806543028225.html

OD 43mm, ID 37mm, CS 3mm.
I got 5 for $1.83.

[UPDATE] These AliExpress O-rings started to weep again after 2 months. Luckily I found that Elring now makes the octagon shaped gasket, part number 074.860.

I didn't know what the torque spec was for the T30 bolts for the thermostat cap, so I did 10 Nm or 89 inch-lb.

I went on a test drive with some full throttle runs and the oil temp got to 240F, and it seems fine with no leaks. I will update this later if it does leak.

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Stubbie Blue · 06-07-2024, 12:08 PM

Quote:

Originally Posted by Stubbie Blue

So I got some FKM fluoro-rubber O-rings from AliExpress.

https://www.aliexpress.us/item/3256806543028225.html

OD 43mm, ID 37mm, CS 3mm.
I got 5 for $1.83.

[UPDATE] These AliExpress O-rings started to weep again after 2 months. Luckily I found that Elring now makes the octagon shaped gasket, part number 074.860.

Wolf 335 · 06-10-2024, 10:29 AM

Octagonal gasket is in stock at FCP Euro. Rockauto also has it but it is out of stock at the moment.

Stubbie Blue thanks for the update and for finding out the Erling part!

https://www.fcpeuro.com/products/bmw...elring-074-860

I'm still runing a round Viton o-ring and no issues.

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whyzee125 · 06-20-2024, 12:12 AM

11517514941 appears to be a genuine BMW part number for this!

Wolf 335 · 06-24-2024, 01:53 PM

Quote:

Originally Posted by whyzee125

11517514941 appears to be a genuine BMW part number for this!

ECS Tuning lists that part number as a square gasket. Not the one in question.

Also discontinued.

e90_Razzor · 10-03-2024, 01:22 AM

Quote:

Originally Posted by Wolf 335

Octagonal gasket is in stock at FCP Euro. Rockauto also has it but it is out of stock at the moment.

Stubbie Blue thanks for the update and for finding out the Erling part!

https://www.fcpeuro.com/products/bmw...elring-074-860

I'm still runing a round Viton o-ring and no issues.

Attachment 3476707

Hi.

I just ordered Viton o-ring 3x37 https://a.co/d/3QXsvAf Was it a good buy?
Which one did you buy?

02-20-2022, 03:08 PM	#68
david in germany Lieutenant Colonel 732 Rep 1,819 Posts Drives: 118i, 335i and 328i Join Date: Nov 2011 Location: Mannheim Germany iTrader: (2)	If anyone is interested. The difference between the felpro version and the o-ring. https://www.reddit.com/r/E90/comment...&utm_term=link __________________ 2009 118i Monaco Blue "Maximillion" 2009 335i Saphire Black M Sport "Leopold" Cobb stage 2 aggressive tune, Mishimoto FMIC, Cobb charge pipe, Cobb catted down pipes, Forge diverter valves, BMS inlets and DCI, Cyba scoops and M Individual Audio retrofit and M3 gauge cluster retrofit. 2011 328i Titan Silver M Sport "Franzel" <--Wife's car
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02-21-2022, 07:50 AM	#69
mj6234 Private First Class 34 Rep 109 Posts Drives: E92 335i Join Date: Nov 2011 Location: US iTrader: (0)	The one in the reddit post is only rated up to 100*C. I wouldnt use that for this application as we all know our oil runs over that. Seems like viton would be a much better material choice. https://www.amazon.com/Mr-Ring-3X37-...18&sr=8-3&th=1 I would guess this standard o-ring would work as well. https://www.amazon.com/220-Viton-Rin...ustrial&sr=1-1
	Appreciate 1 Biginboca3786.50 Quote

02-21-2022, 02:49 PM	#70
IllSic_Design Colonel 2125 Rep 2,759 Posts Drives: 12 E92 328i Join Date: Jun 2016 Location: Northern California iTrader: (1)	you def want to use Viton o-rings on these cars
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03-02-2022, 08:41 AM	#73
soulcrusher Private 11 Rep 65 Posts Drives: BMW 335i Join Date: Nov 2019 Location: Miami iTrader: (0)	thanks for the posts! Last edited by soulcrusher; 03-21-2022 at 12:47 PM..
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03-20-2022, 01:06 PM	#74
arnas New Member 6 Rep 10 Posts Drives: BMW 435xi F33 Join Date: Dec 2021 Location: Lithuania iTrader: (0)	Hi guys, I am also facing oil thermostat gasket leak and was doing some research on the internet. I found this post which was very helpful. So I started to look for Viton 43mm x 3mm o'ring. I was able to found that BMW make this o'ring as replacement part for K series motorcycles water pump I guess. Replacement part is called "O-RING 43X3-N-FPM 85" and OEM part number is 07 11 9 905 382. So I will try to order it at my local BMW dealer and hope that it will fit. I will update how it goes after installation. Also, maybe anyone know if this gasket is the same for F series chassis?
	Appreciate 2 Biginboca3786.50 StradaRedlands6414.50 Quote

03-21-2022, 12:43 PM	#75
soulcrusher Private 11 Rep 65 Posts Drives: BMW 335i Join Date: Nov 2019 Location: Miami iTrader: (0)	These viton o-rings are backordered. Have been backordered for a long period now, extending to May 2022. Anyone here have spares they can send me? Im in Miami, FL.
	Appreciate 0 Quote

04-18-2022, 03:50 PM	#77
ichibanset Private First Class 25 Rep 109 Posts Drives: Alpine White 09 e90 335i Join Date: Jun 2015 Location: Southern California iTrader: (0)	1 7/16 ID x 1 11/16 OD x 1/8 also fits. __________________ 2009 E90 335i
	Appreciate 1 StradaRedlands6414.50 Quote

12-31-2023, 04:28 PM	#78
mozmann Registered 0 Rep 1 Posts Drives: E60 530i Join Date: Dec 2023 Location: TX iTrader: (0)	Any idea about the torque spec for the screws? I replaced the old one with the viton gasket, torqued the bolts to 16.5 Nm slowly, weeping at idle. I am afraid to over tighten and snap the screws...
	Appreciate 0 Quote

01-29-2024, 12:09 AM	#80
PMT_BOI Registered 0 Rep 1 Posts Drives: E92 335i (N55) Join Date: Jan 2024 Location: California iTrader: (0) Garage List 2011 BMW 335 [0.00]	Hey guys Im a new bmw owner and I just replaced OFHG on my e92 335i (n55) I made the mistake of opening the thermostat lid so now I have a leak there My question is probably a dumb one... but do I drain fluids again to replace this gasket??? I just put fluids in as well as bled coolant and primed the engine
	Appreciate 0 Quote

03-07-2024, 07:28 AM	#81
Malo_Industries CNC Machined BMW Parts 9 Rep 4 Posts Drives: BMW 135i Join Date: Dec 2021 Location: Surrey, BC iTrader: (0) Garage List 2008 BMW 135i [0.00]	Sorry guys, I keep a little more inventory of these now. If, I ever run out again it should only be for 3 weeks max https://www.maloindustries.com/produ...thermostat-lid
	Appreciate 0 Quote

04-11-2024, 06:22 PM	#82
Stubbie Blue Private First Class 160 Rep 166 Posts Drives: 2012 135i Coupe Join Date: Mar 2017 Location: Florida iTrader: (0)	I did the 2 OFHGs on my 2012 135i N55, but after a few months I saw a buildup of grime from the oil cooler thermostat cap. So I got some FKM fluoro-rubber O-rings from AliExpress. https://www.aliexpress.us/item/3256806543028225.html OD 43mm, ID 37mm, CS 3mm. I got 5 for $1.83. [UPDATE] These AliExpress O-rings started to weep again after 2 months. Luckily I found that Elring now makes the octagon shaped gasket, part number 074.860. I didn't know what the torque spec was for the T30 bolts for the thermostat cap, so I did 10 Nm or 89 inch-lb. I went on a test drive with some full throttle runs and the oil temp got to 240F, and it seems fine with no leaks. I will update this later if it does leak. Last edited by Stubbie Blue; 06-07-2024 at 12:07 PM..
	Appreciate 3 TiAgAu212.00 TheMidnightNarwhal2796.50 Wolf 3352561.00 Quote

06-10-2024, 10:29 AM	#84
Wolf 335 Brigadier General 2561 Rep 3,659 Posts Drives: 2007 E92 335i Join Date: Aug 2012 Location: Toronto iTrader: (0)	Octagonal gasket is in stock at FCP Euro. Rockauto also has it but it is out of stock at the moment. Stubbie Blue thanks for the update and for finding out the Erling part! https://www.fcpeuro.com/products/bmw...elring-074-860 I'm still runing a round Viton o-ring and no issues. Last edited by Wolf 335; 06-10-2024 at 10:34 AM..
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06-20-2024, 12:12 AM	#85
whyzee125 Brigadier General 1986 Rep 4,004 Posts Drives: Dinan stage 2 335i Join Date: Jul 2014 Location: Chattanooga Tn iTrader: (0)	11517514941 appears to be a genuine BMW part number for this!
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