Which Diff do I have?
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New User
Joined: Aug 2003
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From: Long Beach, CA
Which Diff do I have?
My Ford E350 dual wheel 1998 motorhome has a slight leak at the pinnion seal. After reading my book on replacement there seems to be 3 kinds used on that year. How do I tell which rear end differential I have?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Find the VIN plate/sticker, and look for the axle code. The code can be decoded and will tell you what axle type you have, the ratio, and the axle weight capacity. If you have a cutaway (body cut away behind B pillar), the VIN will be on either the door face, or the door post (B pillar).
There is also a metal tag on one of the rear axle center section bolts with the Ford axle ID number, and numbers/letters like 61.1 or D70, etc. and the ratio may be listed too.
There is also a metal tag on one of the rear axle center section bolts with the Ford axle ID number, and numbers/letters like 61.1 or D70, etc. and the ratio may be listed too.
Last edited by NumberDummy; Mar 11, 2007 at 03:36 PM.
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