I have been searching without finding what pcv grommet to get for M/T alu valve covers. The grommet for stamped steel covers won't work as the groove in them is not wide enough. Any parts number or car model to refer to?
Thanks

I've used these with the Mopar Performance cast aluminum valve covers before and they work. Your M/T valve covers are probably about the same thickness, so it should work with them as well, so take a look:

https://www.summitracing.com/parts/dcc-5249642/overview/

Note: You will need to use the stock Mopar PCV valve with this grommet.

Could be worth a shot, especially if you can buy without an exorbinant shipping fee. Don't recall trying any with a p/n that high. I tried some other MP ones and they didn't work.
The proper ones were sold by Holley - and may not be in production. Photos and p/n posted here.
https://board.moparts.org/ubbthreads/ubbt...tml#Post2203086

That was my thread. I ended up getting a rubber "plug" that said oil on it and then I bored a hole until it fit the PCV valve.

Check out mancini racing and look at the Dims. on bb and sb. If I remember correctly I had to choose some from the sb section in order to fit.

Because I am an idiot, I deleted the link that I found for the
Dorman breather grommet. Does anyone know which one it is?

I have the link to the Dorman PCV grommet.

https://www.google.com/search?q=dorman+4...me&ie=UTF-8