Damn diff gasket!!!!
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Cargo Master
Joined: Jun 2008
Posts: 2,923
Likes: 33
From: Sacramento Area
Damn diff gasket!!!!
Had the riff fluid changed maybe 3-4 months ago...along with a ton of other work...a week ago the rear diff springs a leak.
Anyone have suggestions on a diff cover...good supplier that won't suck my wallet dry?
Anyone have suggestions on a diff cover...good supplier that won't suck my wallet dry?
Laughing Gas
Joined: Nov 2001
Posts: 829
Likes: 22
From: Florida
I went with the 2008 model year diff cover and even did a little custom paint job on it. They are super cheap and have vanes that help keep your diff cool. There are many aftermarket ones but I bought my Ford factory unit for about $29...how's that for cheap?
Custom painted(by me using high-temp rattle can paint and clearcoat) 2008 Ford F-250 rear diff cover:
Custom painted(by me using high-temp rattle can paint and clearcoat) 2008 Ford F-250 rear diff cover:
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,606
Likes: 151
From: SE Georgia
did you use an actual gasket?
or
did you use RTV sealant to make a gasket?
hopefully you didn't use an actual gasket. there is a specific RTV for differentials. Stuff is thicker than normal and is resistant to gear oil breakdown
or
did you use RTV sealant to make a gasket?
hopefully you didn't use an actual gasket. there is a specific RTV for differentials. Stuff is thicker than normal and is resistant to gear oil breakdown
Cargo Master
Joined: Jan 2008
Posts: 2,566
Likes: 18
From: The Great White North!
Many have gone with the 08 rear diff cover, just because of such a small cost to get the alum cover.
Remember that you will need longer bolts if you go this route as the flange is thicker on the alum cover.
The gasket is a squeeze out of a tube gasket maker when you go to replace the cover.
Remember that you will need longer bolts if you go this route as the flange is thicker on the alum cover.
The gasket is a squeeze out of a tube gasket maker when you go to replace the cover.
Senior User
Joined: Sep 2010
Posts: 423
Likes: 2
From: Cypress TX
Good info to know as this is on my to-do list. Anyone know the replacement bolt part numbers? Or does Home Depot/Lowes have the appropriate hardware?
Tuned
Joined: Nov 2012
Posts: 307
Likes: 9
From: Gainesville, FL
I have the Mag-Hytec (front, rear and trans pan). All three use an o-ring style gasket. I have not had any leak problems and they have been on for over a year. The best part of the diff covers is that you have the ability to check the level and add/drain without having to remove the cover. Thus eliminating the worry of the gasket leaking.
Hotshot
Joined: May 2005
Posts: 13,484
Likes: 42
From: Stevens Point, WI
08 here as well!
Pull an old bolt out, go to hardware store and get new bolts 5/8-3/4" longer. I went with the socket head bolts and stainless washers. I didn't think of it at the time but I should have gotten stainless socket head bolts as well.
Pull an old bolt out, go to hardware store and get new bolts 5/8-3/4" longer. I went with the socket head bolts and stainless washers. I didn't think of it at the time but I should have gotten stainless socket head bolts as well.
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Senior User
Joined: Sep 2012
Posts: 336
Likes: 0
From: Wildwood, Illinois
My 2 local big box stores didn't even have the right size bolts. I went with these Armor coated bolts( Ultra Coated Alloy Stl Sckt Head Cap Screw, 5/16"-18 Thread, 1-1/4" Length)and washers(Ultra-coated Grade 8 Steel Sae Flat Washer, 5/16" Screw Size, 11/16" Od, .05"-.08" Thick) from McMaster Carr.. McMaster-Carr
McMaster-Carr
McMaster-Carr
Cargo Master
Joined: Mar 2005
Posts: 2,790
Likes: 24
From: Mount Royal, NJ
In case anyone is looking for stainless, I bought these in stainless from Allens Fasteners to fit my aluminum '08 cover:
Allen socket bolts:
Chrome Bolts, Stainless Steel Bolts, Metric Bolts, Socket Head Cap Screws, Grade 8 Bolts, F911 Bolts (you need 1-1/4 inch long)
Washers:
Chrome Bolts, Stainless Steel Bolts, Metric Bolts, Socket Head Cap Screws, Grade 8 Bolts, F911 Bolts
Lock Washers:
Chrome Bolts, Stainless Steel Bolts, Metric Bolts, Socket Head Cap Screws, Grade 8 Bolts, F911 Bolts
The whole shebang cost me about $17 including shipping. Shipping was $7 of it!
Allen socket bolts:
Chrome Bolts, Stainless Steel Bolts, Metric Bolts, Socket Head Cap Screws, Grade 8 Bolts, F911 Bolts (you need 1-1/4 inch long)
Washers:
Chrome Bolts, Stainless Steel Bolts, Metric Bolts, Socket Head Cap Screws, Grade 8 Bolts, F911 Bolts
Lock Washers:
Chrome Bolts, Stainless Steel Bolts, Metric Bolts, Socket Head Cap Screws, Grade 8 Bolts, F911 Bolts
The whole shebang cost me about $17 including shipping. Shipping was $7 of it!
Cargo Master
Joined: Mar 2005
Posts: 2,790
Likes: 24
From: Mount Royal, NJ
I also used this sealant. It is the sealant that Permatex designed for differentials and transfer cases. Color is gray.
Gasket Makers : Permatex® Gear Oil RTV Gasket Maker
Gasket Makers : Permatex® Gear Oil RTV Gasket Maker