How to Validate Axle Ratio/Type?

[bring_em_on]

I'm trying to figure out exactly what rear end my 2021 Limited has. The vehicle sticker indicates that it comes with the 3.73 non-limited slip as part of the HD towing package. However, the axle code on the inside of the driver side door is 3L which indicates that it's 3.73 electronic limited slip. Any ideas on how to validate which is correct? I lean towards the axle code on the door as being more trustworthy.

https://www.ford.com/cmslibs/content/dam/brand_ford/en_us/brand/resources/general/pdf/guides/21Towing_Ford_Expedition_Dec3.pdf

Thanks.

 

[DWs-TTEB]

Do you have the button to lock the rear differential next to the drive mode selector? That’s the e-locker button/evidence

 

[bcb97]

The axle code on the door will tell you what your vehicle has. Per the Ford towing guide all 3.73 axle Expeditions for 2020 have the same 3L axle, Page 42.

https://www.fleet.ford.com/content/dam/aem_fleet/en_us/fleet/towing-guides/2020_Ford_RVandTrailerTowingGuide.pdf

 

[Deadman]

The axle code on the door will tell you what your vehicle has. Per the Ford towing guide all 3.73 axle Expeditions for 2020 have the same 3L axle, Page 42.

https://www.fleet.ford.com/content/dam/aem_fleet/en_us/fleet/towing-guides/2020_Ford_RVandTrailerTowingGuide.pdf

Right, but for 2021 Ford lost their mind and confused everything......

 

[bcb97]

Right, but for 2021 Ford lost their mind and confused everything......

It’s pretty much the same. Other than them adding a 2L axle for the 3.73. Point is what your door sticker says is what you got.

https://www.fleet.ford.com/content/dam/aem_fleet/en_us/fleet/towing-guides/2021_Ford_RVandTrailerTowingGuide.pdf

 

[wakeboarder]

Check for the hydraulic assembly on top of the differential.

 

[Deadman]

It’s pretty much the same. Other than them adding a 2L axle for the 3.73. Point is what your door sticker says is what you got.

https://www.fleet.ford.com/content/dam/aem_fleet/en_us/fleet/towing-guides/2021_Ford_RVandTrailerTowingGuide.pdf

correct, but Fords literature is extremely confusing on paper now. So annoying.

 

[Rob6805]

It’s pretty much the same. Other than them adding a 2L axle for the 3.73. Point is what your door sticker says is what you got.

https://www.fleet.ford.com/content/dam/aem_fleet/en_us/fleet/towing-guides/2021_Ford_RVandTrailerTowingGuide.pdf

The door sticker is not correct always. I have a 21 w/ HD tow and the 3.73 non ELSD axle. BUT, my door sticker says 3L. Hence the confusion of the OP.

 

[bcb97]

The door sticker is not correct always. I have a 21 w/ HD tow and the 3.73 non ELSD axle. BUT, my door sticker says 3L. Hence the confusion of the OP.

That is confusing, yours should say 2L. Curious, how do you know it's a non ELSD vs a ELSD?

 

[bring_em_on]

Thanks everyone. I don't have the drive lock on the drive mode selector and I've not looked at the differential itself. Totally confusing to me why there is a discrepancy between the window sticker and the axle ID.