N55 OFHG premature leaking

Houranimd49 · 02-12-2023, 12:08 PM

As the title says, my OFHG at the cooler side is leaking after only 300 miles. The one before it only lasted 17,000 miles.

I purchased the OE gasket from fcp euro and torqued the bolts at 16ft-lb. It doesn’t make sense that this is leaking again so soon unless the bolts are one time use? That’s the only thing I can think of.

What are your thoughts as to why this happened so quickly and how can I prevent a new gasket from leaking again without having to change it?

Hoa · 02-12-2023, 05:08 PM

Bolts are one time use.

02-12-2023, 12:08 PM	#1
Houranimd49 First Lieutenant 252 Rep 333 Posts Drives: F10 535i xDrive, F25 xDrive35i Join Date: Apr 2019 Location: MI iTrader: (0) Garage List 2012 BMW X3 xDriv ... [9.25] 2011 BMW 535i xDrive [9.50]	N55 OFHG premature leaking As the title says, my OFHG at the cooler side is leaking after only 300 miles. The one before it only lasted 17,000 miles. I purchased the OE gasket from fcp euro and torqued the bolts at 16ft-lb. It doesn’t make sense that this is leaking again so soon unless the bolts are one time use? That’s the only thing I can think of. What are your thoughts as to why this happened so quickly and how can I prevent a new gasket from leaking again without having to change it? Attached Images
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02-12-2023, 05:08 PM	#2
Hoa Major 513 Rep 1,356 Posts Drives: BMW Join Date: May 2010 Location: GA iTrader: (9)	Bolts are one time use.
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