What Differential Do I Have??

[MotionMan]

No one seems to know. It's a 15 2500 HD, SLT, Gas, 4x4, fleetside. There is a 14 bolt 10.5 and a 14 bolt 11.5, no one seems to know for sure, the pinion is removable from the front. I say 10.5 but some say 11.5. Help please. Thanks. I should add, looking for a good Alum cover for the rear. Already got screwed on one so I am doing my homework.

[Nathan79]

10.5. The diesels get the 11.5 as well as all 3500's.

[SouthernSilveradoGuy85]

Being the gasser I assume it would be the 10 1/2. To verify you could go on rockauto and compare the shape of the gasket or cover since I'm sure the shape would be different enough to see a difference.

[MotionMan]

I felt like 10.5 was right for the exact reason as Nathan79. And if you read my post on rock auto you would not have mentioned them??but it's all good, I know you meant well :-). wrong cover, steel not Alum,the bowl was basically flat, all around so completely wrong you would have thought I bought this just to throw it away without even looking at it. Hope to get a full refund, cover is on its way back.

[SouthernSilveradoGuy85]

I haven't had a problem with rockauto myself. Seems like the descriptions of what it fits are better than the big parts store sites. May have been a mistake by someone picking the order in the warehouse or a mistake on the site.

 

On a side note, I would prefer steel over aluminum as a diff cover myself. I don't do heavy off-roading, mainly mudding, but if the cover happen to hit something I would rather it be steel than aluminum.

[MotionMan]

I could see that as a problem. Dodge uses the same rear end and has a OEM Alum finned cover with a fill and drain plug. This may be it. I guess I can clean the steel cover and put it in the storage box in the bed just in case, it would at least get me home if I filled it with motor oil and went slow but oh what a mess that would be.

[gearheadesw]

10.5. The diesels get the 11.5 as well as all 3500's.

 

 

 

This

[SMiller]

 

 

 

This

x2

[MotionMan]

Thanks, I appreciate the help, now I feel I can get the right part this time. You know, as you get older you get tired of knowing more about your truck than the dealer, they make you second guess your choice and listen to them, which I find most of the time is wrong.

[SouthernSilveradoGuy85]

I could see that as a problem. Dodge uses the same rear end and has a OEM Alum finned cover with a fill and drain plug. This may be it. I guess I can clean the steel cover and put it in the storage box in the bed just in case, it would at least get me home if I filled it with motor oil and went slow but oh what a mess that would be.

 

I guess I should have been more specific. I know there's aluminum diff covers that are plenty strong and thick so it can take a bump. I was more talking about a cheap thin aluminum cover. If I saw 2 thin wall covers, one being steel and other being aluminum, I would pick steel.

[sdeeter19555]

I could see that as a problem. Dodge uses the same rear end and has a OEM Alum finned cover with a fill and drain plug. This may be it. I guess I can clean the steel cover and put it in the storage box in the bed just in case, it would at least get me home if I filled it with motor oil and went slow but oh what a mess that would be.

Close to Dodge's AAM, but not the same...

 

I ran an ORU aluminum for a long time, Magtec and PML also make good covers...

 

Sent from my SAMSUNG-SM-G900A using Tapatalk

[SMiller]

Close to Dodge's AAM, but not the same...

 

I ran an ORU aluminum for a long time, Magtec and PML also make good covers...

 

Sent from my SAMSUNG-SM-G900A using Tapatalk

I thought a lot of guys were running the Dodge rear diff cover?

[sdeeter19555]

I thought a lot of guys were running the Dodge rear diff cover?

They will interchange, but the covers aren't exactly the same, nor are the housings exactly the same. I ran an ORU cover for a GM AAM 11.5 I got off flea-bay on my 2004.5 Dodge AAM 11.5, it functioned, but didn't match 100%.

 

Sent from my SAMSUNG-SM-G900A using Tapatalk

[MotionMan]

The G2 looks good too. I'm still looking until my refund comes thru.