Differential tag
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Joined: Dec 2003
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Differential tag
99 F150, 4X4, SC, auto: How do I decifer the tag ,and I need a cover gasket, my parts store says it lists only one for 12 hole cover. The gasket is right design but a bit too large.Is there something more to go by?? I need to change an axle bearing. Thanks
Postmaster
Joined: Jul 2001
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From: South Kitsap County, WA
The second line of the axle tag will give you the ratio in a three or four digit alpha numeric code (3 55 or 3L55 the 3 is usually under the bolt) then the ring gear size. If the parts store doesn't go by ring gear size I'd be nervous.
-Kerry
-Kerry
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Joined: Aug 2002
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From: BC, Canada
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Rub my Belly
Joined: Jan 2004
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From: Lawrence, KS
So mine says L55 88 6F07. (Wrote this down before I saw thread and didn't realize that there may be a # under bolt.) So I am assuming that I have Limeted Slip 3.55 with 8.8 gear? What do the rest of the # mean?
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Cargo Master
Joined: Aug 2002
Posts: 2,013
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From: Cajun Country
97Centurion,FelPro makes a 8.8 differential gasket.It is part # ;
FelPro RDS-55431
I get mine at Advance auto parts.They will most likely ask you the year application,then say it dont call for a gasket.Just give them that part # ; it fits all 8.8 differentials.
FelPro RDS-55431
I get mine at Advance auto parts.They will most likely ask you the year application,then say it dont call for a gasket.Just give them that part # ; it fits all 8.8 differentials.