[krashDH]

Hey All,

So the large turbo is a Borg Warner 11657811404. But I'm coming up short with what series this belongs to.

I need to potentially modify the downpipe which would require a new mating flange for the turbo if we have to cut the old one off for the modification. The turbo has a convex flange and the mating one is concave. I see there are different versions of this 3" flange depending on the series, but can't seem to find which one it is. I just want to make sure I get the appropriate flange.

Anyone by chance know the series?

[335dlci]

Realoem.com

[krashDH]

Originally Posted by 335dlci

Realoem.com

That doesn't help me. The part number I listed IS from realoem. I need the series. Because the different series turbos have different output flanges.

I think I figured out what I need though, it's a 4.21" OD concave flange for a 3" diameter pipe.

[MidWillamette335d]

I believe the large is a KP39 and small is a K26. These links may confirm and/or help in your search for parts...


https://www.npboosted.com/collection...39-54399880089

https://www.modosport.eu/shop-1/exha...6-bmw-bi-turbo

Good luck with your project...

[krashDH]

Originally Posted by MidWillamette335d

I believe the large is a KP39 and small is a K26. These links may confirm and/or help in your search for parts...


https://www.npboosted.com/collection...39-54399880089

https://www.modosport.eu/shop-1/exha...6-bmw-bi-turbo

Good luck with your project...

Thank you. I believe I did find the flange I need