What axle do I have?
Thread Starter
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5th Wheeling
Joined: Apr 2025
Posts: 36
Likes: 14
From: Boise, Idaho
What axle do I have?
I have a new to me 2022 F250 lariat CCSB 4X4 with the 7.3l gas engine and 3.55 locking rear axle. Also has the 9900lb GVW package. I am wanting to service the axles. The owners manual mentions a 10.5, 10.8 and 11.8 axle, which all have different specs for the fluid weight. I will tow about 5500lbs with this truck. Also, is the factory gasket on the front and rear axles reusable?
I appreciate the help.
I appreciate the help.
Last edited by tominboise; Apr 11, 2025 at 01:32 PM. Reason: typo
Thread Starter
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5th Wheeling
Joined: Apr 2025
Posts: 36
Likes: 14
From: Boise, Idaho
It has 12 bolts, so it must be the Sterling. Do you know if the factory gasket is reusable on this axle? How about the front axle gasket?
Lead Driver
Joined: Nov 2005
Posts: 8,467
Likes: 4,962
I am about to do the gear lube change on mine, and I bought a reusable gasket, it is a Victor Reinz 71-20065-00.
No idea on the front, my truck doesn't have one.
Laughing Gas
Joined: Mar 2008
Posts: 1,031
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Lead Driver
Joined: Nov 2005
Posts: 8,467
Likes: 4,962
I doubt you could get the syphon tube all the way down to the bottom of the housing to get all the fluid out.
Fill plug is on the front side, near where the pinion goes through.
Plus, no way to clean any metal trash out that may be in there.
When I do mine, I am going to replace the cover with one that has a magnetic drain plug.
Fill plug is on the front side, near where the pinion goes through.
Plus, no way to clean any metal trash out that may be in there.
When I do mine, I am going to replace the cover with one that has a magnetic drain plug.
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Laughing Gas
Joined: Jul 2020
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That will be a sterling 10.5
Not a reusable gasket. If your planning on keeping the truck long enough that you will be the the next guy to service the diff then I would highly recommend you pick up a “Lube Locker” gasket, they make life easy.
Not a reusable gasket. If your planning on keeping the truck long enough that you will be the the next guy to service the diff then I would highly recommend you pick up a “Lube Locker” gasket, they make life easy.
Lead Driver
Joined: Nov 2005
Posts: 8,467
Likes: 4,962
The Victor reusable gasket I mentioned above is heavier than the lube-locker and cheaper.
