9 Inch Pinion Retainer O-Ring Part Number

[CincoBravo]

Does anyone have a part number for a 9 Inch Pinion Retainer O-Ring that would allow me to find it at a local parts store? Both WH and JBG sell them but I'd like to complete the job over the weekend and not wait on shipping. I have Napa, Advance Auto Parts, Autozone, and an O'Reily's nearby. Thanks!

 

[Apogee]

When I built my last 9", I took some measurements and figured out that a Dash No 248 O-ring looked like the closest thing dimensionally to what was supplied with my master rebuild kit. You're talking about the big one that goes on the (Daytona) pinion support housing, right?

https://www.mcmaster.com/o-rings/oil-resistant-buna-n-o-rings-8/dash-number~248/

 

[CincoBravo]

Looking for the o-ring I’ve highlighted in yellow. Thanks!

 

[Digger556]

It's a -248 sized o-ring, Buna-n


Ford P/N: B7A-4669-B

Have the parts store cross reference the number or just drive to a Ford dealer. I needed the crush sleeve for a 9 and every parts store looked at my like I was crazy. Didn't even know what it was except for NAPA, who didn't have it. Went to Ford and the guy had the P/N memorized.