New rear diff cover
Logistics Pro
Joined: Oct 2003
Posts: 4,058
Likes: 2
From: Connecticut
Yes, you will need longer bolts as the 08 cover is noticeably thicker than the stocker. I don't remember what size is needed as when I picked my cover up from the stealership they also supplied me the new bolts (for an additional charge obviously). Hopefully someone else can help enlighten you on the exact size. If I had to guess I would say 1.25".
Posting Guru
Joined: Jul 2004
Posts: 1,777
Likes: 0
From: Buckingham, IA
Try this. Gives a little insight on different applications.
https://www.ford-trucks.com/forums/8...ver-bolts.html
https://www.ford-trucks.com/forums/8...ver-bolts.html
Posting Guru
Joined: Mar 2009
Posts: 1,065
Likes: 0
From: Tiverton,RI
That's exactly right Josh, the 1 1/2" bolts are just a little too long. You can use them but you have to add washers.
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Tuned
Joined: Oct 2005
Posts: 427
Likes: 1
From: Melrose MN
Thanks I just thought about it before I was going to change them. Have to wait until the stores open tomorrow.
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Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Yep -- you're covered. It was hard to find them in SS at Lowes/HD, so I went with 1 1/2 and bought some extra flat washers for spacers. Only a couple needed them. Most tightened up fine with just a single flat & lock washer. What kind of fluid are you using? I went with Royal Purple syn 75W-140 with the friction modifier in it already. It worked out perfectly. Here's what mine looks like:
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
That's the correct length. I found the 1 1/4" long SS bolts were carried at a Sears Hardware store.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 24
From: Damon (South East Texas)
