Who makes a finned differential cover?

[NASCAR Mike]

I am looking for a finned differential cover for my 17 Expy. I can't find one.

I see ones for F150's but they have a solid read axle.

Anyone here know of one?

 

[AllBoostNoEco]

I think you’re SOL because the cover has mounting ears on it due to the IRS.

 

[Black]

Plus you have about zero space between the IRS and the cover as is. The fins would have to extend out and I just don’t see it fitting.
The fins would have to be so short you would likely see no added heat dissaption.

Do you think you are cooking your fluid?

 

[ExplorerTom]

If you haven't seen these, it's worth a watch:

 

[NASCAR Mike]

I don't think I am cooking my fluid but I am always over cautious with things. I added this to my 2013 Mustang GT along with a finned transmission pan. https://www.steeda.com/steeda-mustang-finned-differential-cover-fill-drain-plugs-555-8142.html

Explorer Tom - those are great videos. The finned diff cover for my mustang does not change how the inside of the pan is made; only fins are added. They are already installed on GT500's from the factory.

I am sure someone makes one for our differentials. Maybe need to look at the GT350 Mustang because it has an independent rear suspension?

 

[Black]

https://lmr.com/item/M4033K/1986-11-Mustang-Gt500-Style-Finned-Aluminum-Rear-End-Cover?sc_src=email_1346541&sc_lid=90582099&sc_uid=L9KJ2nowEZ&sc_llid=57233&utm_source=emarsys&utm_medium=email&utm_campaign=VOR10_7918_1-2018-12-16+01:00:00&utm_content=&sc_eh=535ed760e4f64bd81

Sure would not be an enjoyable job getting it on if it fits.

 

[AllBoostNoEco]

I looked around, and despite what you’d expect, the GT350 and GT350R both use an 8.8” IRS. Even if it was a 9.75”, the design is radically different from ours.
I can’t find any other vehicle in the Ford Co lineup that uses a 9.75” IRS, making the differential cover 100% unique to the Expy/Navi twins, and we all know how aftermarket support for our trucks is.