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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 04-22-2010, 10:08 AM   #1
oc330cic
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Join Date: Apr 2003
Location: Orange County, CA
Posts: 90
My Ride: 2002 330 CiC
Leaking Convertible Top Seal

Has anyone had any luck replacing the seal above the windshield (A-pillar) where the convertible top mates? I've started to get a drip when it rains, and it looks like water is seeping under that seal.

The seal is integral to the doors - one big continuous piece from under the door, up the A-pillar, across the top of the header, and down the other side. Dealer quoted me $687 for the part alone, and installation includes removing pillar trim, rocker panel, etc. Yikes!! I'm hoping I can repair it instead.

Here's a diagram. I think the failed seal is part #12, the gasket with edge protection.
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Old 08-18-2010, 09:15 AM   #2
dkuchta
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Join Date: Apr 2009
Location: Annapolis, MD
Posts: 202
My Ride: 325cic
Quote:
Originally Posted by oc330cic View Post
Has anyone had any luck replacing the seal above the windshield (A-pillar) where the convertible top mates? I've started to get a drip when it rains, and it looks like water is seeping under that seal.

The seal is integral to the doors - one big continuous piece from under the door, up the A-pillar, across the top of the header, and down the other side. Dealer quoted me $687 for the part alone, and installation includes removing pillar trim, rocker panel, etc. Yikes!! I'm hoping I can repair it instead.

Here's a diagram. I think the failed seal is part #12, the gasket with edge protection.
Any luck with this?
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Old 08-18-2010, 02:14 PM   #3
oc330cic
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Join Date: Apr 2003
Location: Orange County, CA
Posts: 90
My Ride: 2002 330 CiC
Yes!! My apologies for not following up.

I fixed the leak using Permatex Ultra Rubber Gasket Sealant and Dressing, which I picked up at a local Pep Boys store. It doesn't harden, which I wanted in case it didn't work. I gently pried up the gasket and spread the sealant underneath along a 12 inch area where I suspected the leak was occurring. I could see in this area that the gasket was no longer flush against the header.

I'm fairly certain the leak is fixed. It hasn't rained here in Southern California for several months, so I haven't tested the seal in a rainstorm, but I've handwashed my car several times with a garden hose and had no leakage. I made sure I sprayed the entire header area with the hose very heavily in order to test out the repair. So far, it's watertight.
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Old 03-22-2011, 11:43 AM   #4
dkuchta
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Join Date: Apr 2009
Location: Annapolis, MD
Posts: 202
My Ride: 325cic
Quote:
Originally Posted by oc330cic View Post
Yes!! My apologies for not following up.

I fixed the leak using Permatex Ultra Rubber Gasket Sealant and Dressing, which I picked up at a local Pep Boys store. It doesn't harden, which I wanted in case it didn't work. I gently pried up the gasket and spread the sealant underneath along a 12 inch area where I suspected the leak was occurring. I could see in this area that the gasket was no longer flush against the header.

I'm fairly certain the leak is fixed. It hasn't rained here in Southern California for several months, so I haven't tested the seal in a rainstorm, but I've handwashed my car several times with a garden hose and had no leakage. I made sure I sprayed the entire header area with the hose very heavily in order to test out the repair. So far, it's watertight.
Hey, I want to give this a try, any reason you went with that over a RTV Silicone Gasket Maker? Also any update on with rain?
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Old 09-21-2012, 07:23 PM   #5
oc330cic
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Join Date: Apr 2003
Location: Orange County, CA
Posts: 90
My Ride: 2002 330 CiC
Quote:
Originally Posted by dkuchta View Post
Hey, I want to give this a try, any reason you went with that over a RTV Silicone Gasket Maker? Also any update on with rain?
I chose the Ultra Rubber Gasket Sealant because the label said it didn't harden. I figured if I dripped it somewhere, it it didn't work and I wanted to try something else, I could still remove this product. It might not work under higher pressure applications, but for rain water, I figured it would be fine.
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