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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Oil Cooler Hose - Oil leak help.



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      05-18-2026, 07:36 PM   #23
Gizm0
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Quote:
Originally Posted by Jklad View Post
Is it possible to purchase the gasket for that cap seperately? I've looked all over realoem and can't find it listed. the aftermarket oil cooler tstat vendors do not sell it either. Mine's been seeping oil for a bit.
FCP Euro has the gasket for the oil cooler thermostat. That’s what I need, I replaced both o-rings and still leaking oil. I’ll grab one today, glad I read this.

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

Edit… it has bad ratings, apparently it is too small and leaks. RTV it is then
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Last edited by Gizm0; 05-18-2026 at 07:44 PM..
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      05-19-2026, 04:03 PM   #24
lowrydr310
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Quote:
Originally Posted by Gizm0 View Post
FCP Euro has the gasket for the oil cooler thermostat. That’s what I need, I replaced both o-rings and still leaking oil. I’ll grab one today, glad I read this.

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

Edit… it has bad ratings, apparently it is too small and leaks. RTV it is then
See my post and link on the previous page of this thread. A suitable o-ring is available elsewhere for cheap, and excellent material too! I've had mine installed for over two years now. leak free. I have an extra one unclaimed PMe and it's yours free. I can mail it in am envelope standard postage. I bought a five pack (minimum) used one and gave three away already.
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