[Rotary Rasp]

I'm replacing my clutch and figure it's also a good time to replace my rear main seal.

REALOEM lists two part numbers for my car. (Built 10/08)

What is the correct part number and installation procedure for this?

[Milan]

The one with the price next to it is always the correct one

[Rotary Rasp]

Originally Posted by Milan

The one with the price next to it is always the correct one

That's the 12mm seal, I thought that was the old version?

[theweebabySeamus]

It's to my understanding that they switched to the narrower seal and that it also doesn't need the specific silicone that the wide ones and the front seal do.

[Rotary Rasp]

Originally Posted by theweebabySeamus

It's to my understanding that they switched to the narrower seal and that it also doesn't need the specific silicone that the wide ones and the front seal do.

So that would be the one without the price next to it...

[Stroker1]

I installed the 4398 seal and used the uber expensive bmw sealer. A fine threaded sheet metal screw screwed into the old seal in a designated spot makes it easy to remove. Examine your new seal and it will be apparent where the spots are for removal. The sealant is a two part primer-sealer. Sealer comes in a syringe to shoot it into the seams created where the seal meets the bedplate/engine block surface. Bentlely manual calls out to use sealer in this seam area, but I used a thin film around the entire circumference of the seal, then filled the small gaps at the bedplate seam with the syringe. the sealer dries in a few hours. The other seal pn may work but I cant attest to it. I considered using rtv black or something similar for sealer, but I didn't want to do it again so opted to bite the bullet and get the real stuff. Something else may work adequately though I cant say.

[Desmodromic]

How much was the oem sealant?

[Stroker1]

Sealer was 63.00 for a small tube. Found the primer from a place.who had a tube about to expire for 83 cents. No leaks but cant say rtv black or gray wouldnt work as well. For me too much work to redo if it leaked.

[theweebabySeamus]

I did the front seal with a VW sealant when I did my oil pan and a few weeks later I'm getting an oil leak. If it is the front seal that's leaking I'll update the post.