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SKU: R1412 GM / Dodge AAM 11.50 Differential Cover (W/Hardware)

GM / Dodge AAM 11.50 Differential Cover (W/Hardware)
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Purchase GM / Dodge AAM 11.50 Differential Cover (W/Hardware)
  • GM / Dodge AAM 11.50 Differential Cover (W/Hardware)

  • ★★★★★ ★★★★★ 5 reviews
  • Part Number: R1412
  • Shipping Weight: 16.00 pounds

  • $149.95

  • Add Lube Locker Gasket?:  
  • In Stock

GM / Dodge AAM 11.50 Differential Cover

Due to low demand these covers are made per order. Please allow 5 day lead time from time order is placed.

The differential cover is a 1 piece 3/8" (.375") plate steel cap bent 8 ways then welded to a 3/8" ring! The fill plug is a generous 1" ID for easy fill and oil level check. After welding the mounting surface is machined absolutely flat for a perfect fit!

You must verify what axle is under your vehicle as there are a few options from factory. This cover fits the below vehicles equipped with the AAM 11.5"

GM Duramax Years 11.5
  • 2001-2018
Dodge Years 11.5
  • 2004-2018

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★★★★★ ★★★★★
4.80/5 Stars out of 5 Reviews
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.

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⚠ 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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