OFHG / Mickey Mouse flange

AllBlackBimmer · 07-09-2023, 09:35 PM

I need to do my OFHG, for the second time now.

Does it make sense to replace the Mickey Mouse flange when doing this? I’d get the aluminum one

I’ve had my radiator replaced about a year ago, and then replaced a few hoses but I don’t think they would’ve touched the hose with the Mickey Mouse flange in it, correct?

If doing the MM flange, and OFHG … what else should I have done while they are in there doing the work.

My sepertine belt and tensioner were done 50k ago… debating on doing that as well.

N52 328i, 151,000 miles

Thanks

StradaRedlands · 07-09-2023, 11:01 PM

Quote:

Originally Posted by AllBlackBimmer

I need to do my OFHG, for the second time now.

Does it make sense to replace the Mickey Mouse flange when doing this? I’d get the aluminum one

I’ve had my radiator replaced about a year ago, and then replaced a few hoses but I don’t think they would’ve touched the hose with the Mickey Mouse flange in it, correct?

If doing the MM flange, and OFHG … what else should I have done while they are in there doing the work.

My sepertine belt and tensioner were done 50k ago… debating on doing that as well.

N52 328i, 151,000 miles

Thanks

I'd get the hose done at the same time just to be sure. Change as much of the coolant as you can as well, sort of a semi-flush. And yes, do the tensioner and belt @ 50k. Easy to change the VANOS seals while you're there, so I did mine at the same time. There's been recent discussion on crank seal guard, might as well do that while everything is pulled off.
https://www.e90post.com/forums/showthread.php?t=2029635

Serf27 · 07-10-2023, 02:33 AM

Replace that flange, replace belt and tensioner.
Get an oem gasket.
Those aftermarket gaskets don’t last as long.

AllBlackBimmer · 07-10-2023, 06:25 AM

Quote:

Originally Posted by StradaRedlands

I'd get the hose done at the same time just to be sure. Change as much of the coolant as you can as well, sort of a semi-flush. And yes, do the tensioner and belt @ 50k. Easy to change the VANOS seals while you're there, so I did mine at the same time. There's been recent discussion on crank seal guard, might as well do that while everything is pulled off.
https://www.e90post.com/forums/showthread.php?t=2029635

Dumb question, what is this hose called? The one that attaches to the MM flange? I believe it goes to the thermostat?

VANOS seals... I will have to look that one up, but thanks for the suggestion

Crank guard seal - this is the metal cover that protects against the crank sucking in the belt if it snaps? would make sense to do if I am going to the belt/pulley/tensioner

AllBlackBimmer · 07-10-2023, 06:26 AM

Quote:

Originally Posted by Serf27

Replace that flange, replace belt and tensioner.
Get an oem gasket.
Those aftermarket gaskets don’t last as long.

I agree, i only have ever used OEM gaskets.

My OFHG has lasted almost exactly 75,000 miles.

My first VCG gasket went at 90k, so I am expecting on having to do that one too pretty soon.

Efthreeoh · 07-10-2023, 07:14 AM

No need to do the belt and tensioner. I'd have the shop source the t-stat hose with the aluminum flange already assembled in the hose. Shops like to replace parts for warranty purposes.

denn69 · 07-10-2023, 07:59 AM

https://www.fcpeuro.com/products/bmw-coolant-hose-with-flange-rein-11537545890

Here is the link to the hose at FCP. Def change it. If you want to torque the OFHG correctly u have to take it off anyway. Mine was broken on both my cars.

Suvorovo · 07-10-2023, 08:40 AM

Agreed with everyone, I also purchased an OEM gasket and OEM bolt set. Someone on the forums recommended not getting the Rein one. They mentioned that the Rein flange started leaking shortly after installation. Unfortunately for me, the job was already done using a rein flange.

StradaRedlands · 07-10-2023, 09:06 AM

My Rein flange/gasket has been fine so far (Done last September).
https://www.fcpeuro.com/products/bmw...in-11537545890

I did have a small leak from Rein upper radiator hose at the the heater hose junction, but it sealed up after the O ring expanded a bit.

lowrydr310 · 07-10-2023, 10:13 AM

Quote:

Originally Posted by StradaRedlands

Easy to change the VANOS seals while you're there, so I did mine at the same time.

Careful with the terminology there. I think you're referring to the VANOS solenoid o-rings, which are easy to change.

"VANOS seals" in the context of BMW usually refers to the internal gaskets on the VANOS adjusters for the M52TU, M56, and M54 engines, and require a valve cover removal along with a bit of time to replace.

These do not apply to the N52, N51, N52k, N54 or N55 motors found in E90s.

StradaRedlands · 07-10-2023, 12:07 PM

Quote:

Originally Posted by lowrydr310

Careful with the terminology there. I think you're referring to the VANOS solenoid o-rings, which are easy to change.

"VANOS seals" in the context of BMW usually refers to the internal gaskets on the VANOS adjusters for the M52TU, M56, and M54 engines, and require a valve cover removal along with a bit of time to replace.

These do not apply to the N52, N51, N52k, N54 or N55 motors found in E90s.

You are correct! VANOS O-rings or gaskets!

https://www.fcpeuro.com/products/bmw...-11367548459oe

GoRomeo · 04-15-2024, 09:34 PM

You guys like my new Souvenir?? Lasted me 17 yrs. Cant complaint.

lordnikon · 04-16-2024, 01:16 PM

You won the lottery that it didn't break into pieces.

07-09-2023, 09:35 PM	#1
AllBlackBimmer Colonel 815 Rep 2,869 Posts Drives: 2019 X3 m40i Join Date: Aug 2011 Location: USA iTrader: (-1)	OFHG / Mickey Mouse flange I need to do my OFHG, for the second time now. Does it make sense to replace the Mickey Mouse flange when doing this? I’d get the aluminum one I’ve had my radiator replaced about a year ago, and then replaced a few hoses but I don’t think they would’ve touched the hose with the Mickey Mouse flange in it, correct? If doing the MM flange, and OFHG … what else should I have done while they are in there doing the work. My sepertine belt and tensioner were done 50k ago… debating on doing that as well. N52 328i, 151,000 miles Thanks __________________ 2019 X3 m40i:Carbon Black:Executive:Premium:Adaptive:Vernasca:699M:HK: Ambient:IND trim:M Mirrors:15mm spacers:Maxton lip:20% tint windows/pano:dsg paddles:TLG mudflaps 2008 328i E90 Jet Black:6MT:RWD:Premium:Sport:Xenon:MTEC V3 AEs:Front Splitters:CF spoiler:19" VMR FF v710
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07-10-2023, 02:33 AM	#3
Serf27 Brigadier General 2851 Rep 4,322 Posts Drives: 335i Join Date: Apr 2018 Location: Sitting in a BMW. iTrader: (-1)	Replace that flange, replace belt and tensioner. Get an oem gasket. Those aftermarket gaskets don’t last as long.
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07-10-2023, 07:14 AM	#6
Efthreeoh General 17323 Rep 18,742 Posts Drives: The E90 + Z4 Coupe & Z3 R'ster Join Date: May 2012 Location: Virginia iTrader: (0)	No need to do the belt and tensioner. I'd have the shop source the t-stat hose with the aluminum flange already assembled in the hose. Shops like to replace parts for warranty purposes. __________________ A manual transmission can be set to "comfort", "sport", and "track" modes simply by the technique and speed at which you shift it; it doesn't need "modes", modes are for manumatics that try to behave like a real 3-pedal manual transmission. If you can money-shift it, it's a manual transmission. "Yeah, but NO ONE puts an automatic trans shift knob on a manual transmission."
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07-10-2023, 07:59 AM	#7
denn69 New Member 5 Rep 18 Posts Drives: BMW 328XI Join Date: Jan 2022 Location: PA iTrader: (0)	https://www.fcpeuro.com/products/bmw-coolant-hose-with-flange-rein-11537545890 Here is the link to the hose at FCP. Def change it. If you want to torque the OFHG correctly u have to take it off anyway. Mine was broken on both my cars.
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07-10-2023, 08:40 AM	#8
Suvorovo Lieutenant 254 Rep 502 Posts Drives: Broken e90 330xi 6MT Join Date: Feb 2022 Location: New Jersey iTrader: (0)	Agreed with everyone, I also purchased an OEM gasket and OEM bolt set. Someone on the forums recommended not getting the Rein one. They mentioned that the Rein flange started leaking shortly after installation. Unfortunately for me, the job was already done using a rein flange.
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07-10-2023, 09:06 AM	#9
StradaRedlands Brigadier General 4951 Rep 3,011 Posts Drives: 2006 BMW 330i MT Join Date: Dec 2021 Location: SoCal iTrader: (2) Garage List 2006 BMW 330i [8.21] 2009 BMW 328i Touri ... [7.90] 2013 BMW X5 35i [7.63] 2011 BMW 528i [8.75] 2006 Mazda3 [5.50]	My Rein flange/gasket has been fine so far (Done last September). https://www.fcpeuro.com/products/bmw...in-11537545890 I did have a small leak from Rein upper radiator hose at the the heater hose junction, but it sealed up after the O ring expanded a bit.
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04-15-2024, 09:34 PM	#12
GoRomeo Brigadier General 968 Rep 3,860 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [9.50] 2006 330i [6.75]	You guys like my new Souvenir?? Lasted me 17 yrs. Cant complaint. Attached Images
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04-16-2024, 01:16 PM	#13
lordnikon Lieutenant 367 Rep 462 Posts Drives: Break My Wallet Join Date: Feb 2023 Location: Ontario iTrader: (0) Garage List 2011 BMW 328i xDrive [0.00]	You won the lottery that it didn't break into pieces.
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