6.7L Cummins Forum

Squid · #1 (**permalink**) 03-25-2008, 07:26 PM

Since the thought of removing my Diff Cover every 3 to 5 months really Chaffs my butt I decided to go ahead and upgrade my Diff cover and I chose the PML. http://www.yourcovers.com/dc_10361.shtml

$238 delivered and here's what you get.

Increased oil capacity for cooler temperatures
Sand-cast aluminum with raised fins
Thick wall construction to add strength to the differential housing
Thick gasket flange will not bend when bolts are tightened
Machined gasket surface for secure seal using RTV or factory reusable gasket
Oil changes without removing the cover
All hardware provided, including magnetic drain plug
Available in as-cast aluminum, black powder coated, and polished finishes

And here's how to tell what size you need.

Starting in 2004 1/2, every Ram with the diesel got the AAM 14 bolt 11.5". Take a look at the shape of your stock cover and then compare to what you see on our website. The perimeter of the 11.5" cover comes to a point at the top and bottom. The 10.5" (used on earlier, lower power diesels) has a flat top & bottom

jamespi · #2 (**permalink**) 05-30-2011, 12:09 PM

Since you are talking about covers and I want to buy those covers front and back, I thought I would ask here. I guess the axel size matters with the oil level as well. How do you know what axels you have? How much oil does each axel hold with stock covers and new covers? Does everyone really change the axel oil every 15,000 miles? 2008 6.7L HD2500 Thanks

dodgefarmer · #3 (**permalink**) 05-30-2011, 10:56 PM

Stock Covers: Front Axle, 2.35 Quarts and Rear Axle 3.8 Quarts.

I go 50-60,000 miles on front axle and ~40,000 miles on rear. Oil still looks good even with tahat many miles. Doesn't make sense that dodge went from 60,000 miles with 5.9 to 15,000 miles with 6.7 using same axles.

jamespi · #4 (**permalink**) 06-02-2011, 11:06 AM

Thanks Dodge, It does seem crazy for 15,000 miles that is why I was wondering how many changed it at the time. Do these covers use the same fill level as the stock ones (if so how do I know what axel I have) or do you fill till it comes out?

dodgefarmer · #5 (**permalink**) 06-04-2011, 11:04 PM

Quote:

Originally Posted by jamespi

Thanks Dodge, It does seem crazy for 15,000 miles that is why I was wondering how many changed it at the time. Do these covers use the same fill level as the stock ones (if so how do I know what axel I have) or do you fill till it comes out?

You have the 11.5 axle. Look at the picture that Squid posted and look at the bolt pattern/cover bolt flange shape. Should be the same as yours. After market covers have the level plug at the same height as factory, so fill it to same level as factory. Its the height not the amount of lube that is important for lube to reach all the bearings.

jamespi · #6 (**permalink**) 06-06-2011, 08:43 PM

Thanks for the help.

TOWINGPONIES · #7 (**permalink**) 06-10-2011, 01:12 AM

I bought my 07.5 about four weeks ago with 63,000 on it. Your saying that I need to change the fluid in my differential every 15,000? Unless I buy upgraded covers.

CumminZ · #8 (**permalink**) 06-14-2011, 08:27 PM

jamespi · #9 (**permalink**) 06-15-2011, 06:01 PM

I just got mine in! I called them about the fill level and he said to have the oil just below the fill hole.

spaceace182 · #10 (**permalink**) 12-17-2011, 03:30 PM

Hey, does the amount of oil in the differential really make a diffrence? I only ask this because I am looking to upgrade my cover and have looked at all the covers and found most have around 5 quart capacity compared to the 4 quart of the stock. But the Mag hytec claims to hold 8 QUARTS

! Anyone comment on this? thanks

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