Drivetrain› Differentials and Rear-End Components
Motobilt
~(5 lbs. 12X12X6)~ DIY AAM 11.5 DIFF Cover Motobilt
SKU: M05M MB4090-DIY
Moderate — 2–4 hours
Description
Factory differential covers are often too thin for off-road abuse and can fail from rocks or impacts, leading to fluid leaks and potential gear damage.
This kit features a 1/4-inch thick steel plate shell and a 3/8-inch thick steel diff ring, both formed using in-house laser and CNC press brake technology. It comes with an oil fill weld-in bung, oil fill plug, and mounting hardware. The parts ship bare metal and will require painting before installation.
Fitment
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Available on iOS & Android
Specifications
| Brand | Motobilt |
| Part Number | M05M MB4090-DIY |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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