8.8" IRS Axle/Output Shaft Seal part Number Question

[CS223]

I've run across TSB 06-22-5 regarding the halfshaft seal leak. Both mine are leaking, one significantly. The current part# appears to be 7L1Z-4A109-D. I was wondering if there is by chance a Motorcraft p/n. Looking on Rockauto, they list a BRS40 as a rear axle seal. The price difference between the two p/n's is substantial. I'd like to order all the parts that I'm needing from one place if possible.

2005 XLT 4x4 Controltrac RSC

 

[satyr64]

I did it years ago, just make sure you get the update parts. They do away with the dust boots on the axles.