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Bearing Seals
I picked up a pair of rear wheel bearings for my 73 Mach 1. The guy at NAPA said that there are two different kinds of seals for them. He asked me if I had WFD axles. I have no idea what he's talking about and he didn't know what a WFD axle was either. Can anyone shed some light on this for me? I don't want to have to go back when I pull the bearing off.
The difference is one seal has a larger opening to accommodate the 31 spline axle and the smaller opening is for the 28 spline axle. Most common is the 28 spline axle. The NAPA part # for the 28 spline axle is 13700, the part # for the 31 spline axle is 14968. (The WFD axle is the 31 spline).

Hope this helps Smile

- Travis

I'm an analog man in a digital world.
Thanks Doug that sure does help!
I've never heard of the WFD either.

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]

Looks like either a WER or a WEZ axle.

[Image: 2a8f23q.jpg]

Source: Ford Master Parts Catalog, Ford MC



Page 2

[Image: 2v31p1g.jpg]

Source: Ford Master Parts Catalog, Ford MC

ah if i remember there is another problem you have to watch out for... the O.D. on the seal there was 2 different O.D sizes for the seal depending on when your axle housing was made. I think i ordered 3 different seal versions and then i pulled my old one, and one of ones i ordered was correct and i returned the other 2.
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