DIY AAM 10.5 DIFF Cover

Sale badge image for Motobilt EXTENDED Cyber Monday Sale

(Sale price shown in cart/checkout)

Regular price $119.00

Save: $-119.00 (Liquid error (sections/main-product.liquid line 260): divided by 0%)
Shipping calculated at checkout.



If you can weld and want to build your own diff cover, purchase the AAM 10.5 DIY DIFF Cover. Motobilt DIY Diff Covers are the same as our fully-welded diff covers, but sold as a kit including the pre-formed pieces and hardware you will need to complete the DIY project yourself. We have included assembly instructions as well.

Why change out your diff cover? We do get asked this question on occasion. The factory diff covers are too thin for abuse on the trail. One of the common factory diff cover failures occurs when the edge gets peeled up from a rock sliding across the diff. Peeling can cause the differential fluid to leak out unknowingly and the result could be damaging the gears when you hit the road to drive home.

Another failure of factory diff covers are from bending the cover into the ring gear which rubs a hole through. The result here is the same with differential fluid leaking out. One other failure is actually puncturing the factory diff cover with a sharp rock. Again resulting in differential fluid leaking out. Hopefully this explains the need for a heavy duty diff cover. The Motobilt Heavy Duty Fabricated Diff Covers address the failures I have mentioned to ensure your ring and pinion gear sets are well protected.

All Motobilt Diff Covers include a LIFETIME WARRANTY from trail damage and manufacture defect. We cannot warranty DIY Diff Covers being welded incorrectly.

As with all Motobilt DIY builder parts, an experienced welder is recommended.

Installation Note: We strongly recommend tacking the pieces together and test fitting it onto the axle before finish welding. We also recommend using pipe thread tape for the fill plug


  • 1/4 inch thick steel plate shell
  • 3/8" thick steel diff ring
  • In-house laser and CNC press brake
  • Sold as kit
  • All parts are shipped bare metal and will need to be painted before install

DIY Diff Cover Kit includes:
  • Laser-cut 3/8" Ring
  • CNC-formed 1/4" thick shell
  • Oil fill weld-in bung and oil fill plug
  • Mounting hardware


    • Ships bare steel will need to be painted

    Components/Assembly Instructions


    Installation Instructions

    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
    DIY AAM 10.5 DIFF Cover

    DIY AAM 10.5 DIFF Cover

    Pick Up Where You Left Off

    You Took a Peek at These Items - Go On, Add Them to the Cart!

    Hit that checkout button before these savings come to an end!

    YOUR CART (0)

    No Products in the Cart