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Old Feb 1, 2007 | 09:42 AM
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01 rear end

I have a 2001 f-150 super crew. I was wondering how to find out if I have a 8.8/9.75 axle or an 10.25 on my truck. And also how do I know if the axle is a traction-lok axle. I was wanting to know this so I will know how much gear oil I need to buy to put in the rear end and if I need to put an additive for the traction lok.
 

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Old Feb 1, 2007 | 10:00 AM
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From: duncan oklahoma
check the id tag that is bolted to the diff. cover.there will be a 88 or 975 on the tag.this should identify a 8.8 or 9.75
 
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Old Feb 1, 2007 | 07:25 PM
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If you want to know if its a traction lok axle got to the door jamb and look at the axle code if it reads 19 (which is 3.55) for example or any other number 2 numbers its not a traction lok BUT if its a H9 or any other letter and number its a traction lok hope this helps
 
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Old Feb 2, 2007 | 09:53 AM
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If you have a 4.6 it's an 8.8 If you have a 5.4 it's a 9.75 rear.

Phil
 
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Old Feb 2, 2007 | 01:44 PM
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Originally Posted by phil6608
If you have a 4.6 it's an 8.8 If you have a 5.4 it's a 9.75 rear.

Phil
Yup. I look at the axles of trucks out on the road to see what they have in them. Just sizing up the competition from stoplight to stoplight
 
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