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SKU: R1412 GM / Dodge AAM 11.50 Differential Cover

GM / Dodge AAM 11.50 Differential Cover
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Purchase GM / Dodge AAM 11.50 Differential Cover
  • GM / Dodge AAM 11.50 Differential Cover

  • ★★★★★ ★★★★★ 6 reviews
  • Part Number: R1412
  • Shipping Weight: 22.00 pounds

  • $163.00 $138.55 $163.00Additional 15% OFF!

  • In Stock

GM / Dodge AAM 11.50 Differential Cover.

Our differential covers are made from a single plate steel cap, with a thickness of 3/8" or .375", that has been bent eight times and then welded to a 3/8" ring. The fill plug has a diameter of 1 inch, which makes it easy to fill and check the oil level. Once the welding process is complete, the mounting surface is machined to ensure a completely flat surface and a perfect fit.

It is important to verify the type of axle installed in your vehicle, as there are several options available from the factory. This particular cover is compatible with the AAM 11.5" axle, including GM Duramax models from 2001 to the present and Dodge models from 2004 to the present. It also fits AAM 11.8" rear axles.

GM Duramax Years 11.5
  • 2001- Current
Dodge Years 11.5
  • 2004- Current
  • Also fits AAM 11.8" rear axles 2013-2018
  • Does not fit AAM 12" axles available on 2019 and newer 3500 models
  • Diff cover bolts are included
  • This product is made to order, Please allow for a few additional days for us to process your order.

Write Review
★★★★★ ★★★★★
4.83/5 Stars out of 6 Reviews
Pages 1   2
Jacob Bruynzeel (WA) | March 17th, 2022
These look super sick and i can bash them off everything, and the new hardware sets it off as well
Talk about major BEEF!
TLar (SoCal) | September 22nd, 2021
After dragging my differential though some rocks on a recent trip though Death Valley I thought it would be a mess if I blew out my thin AAM cover in the middle of BFE. This diff cover answered the call. Being someone who wheels a full size pickup like it’s a Jeep this is cheap insurance and it looks pretty dang good. The only down side is the hardware included was starting to rust and missing 2 bolts and washers. I ended up buying some gold zinc flange head bolts for pretty cheap and getting the cover installed. Can’t go wrong with these covers that’s why I have one front and rear on my Ram 2500.
No Brainer
Jon (Boston) | September 21st, 2021
This thing is clear and cut as it gets, buy one for your self. Fresh lube locker gasket, new bolts and washers, and a perfectly crafted US made diff cover. to seal the deal, dang that huge fill port is something I didn't know I needed.
King of Arizona? KOFA for short.
Perry (Prescott, AZ) | March 23rd, 2021
Mutilated the stock diff cover in CO mountains not long after buying a new Ram 3500 back in 2016. Got a temp repair up in Grand Junction. Actually I can't remember if I put another tinfoil OEM rear diff cover on or not? But ordered up a Ruff Stuff diff cover/boat anchor as soon as I could back in AZapped. No complaints and no leaks. In fact I hardly ever think about it! I only check in every few years to see if they have a front diff cover available so the truck can be balanced again ;)
Verified Buyer
GM AAM 11.5 Diff Cover
Joshua Salaets (Yorba Linda, CA, US) | May 8th, 2018
This diff cover is everything that I hoped it would be. Customer service was amazing along with the quick shipping. It took 5 days to make the diff cover (as it says in the product description) and was at my front door the next day. After opening the package and seeing it in person I was blown away with how sexy it was. Definitely a chick magnet and will increase your man hood by at least 3 inches. Overall, nothing but great things from this product and would recommend it to anyone.
⚠ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to
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