Drivetrain› Differentials and Rear-End Components
B&M
DIFF COVER,GM 8.2, 8.5 & 8.6 10 BOLT CAS
SKU: B00M 70502
Easy — 1–2 hours
Description
Part #: 70502
Our engineers designed the line of Hi-Tek differential covers to not only look good but address a number of weaknesses of the factory-stamped steel covers. First, they started by constructing the covers of thick A356.0-T6 aluminum, which dissipates heat much faster than the factory steel unit keeping the fluid temperature lower under high-stress loads vs. a steel cover. Then for added durability, we added a reinforced center bar for extra strength along with load bolts to help prevent bearing cap deflection under severe loads. The internal shape of the cover retains the smooth round back internally to help keep the fluid flow going over the ring gear to properly lubricate the gears and bearings. Additional features include a magnetic drain plug for catching ferrous metal particles, a machined B&M logo and all necessary hardware, and easy-to-follow detailed instructions for a quick and simple installation you can do at home.
Features:
- Load Bolts for Additional Support for Bearing Caps
- Magnetic Drain Plug for Easy Servicing
- A356.0-T6 Aluminum Construction
- Additional .4-quart Fluid Capacity
- Over 65 Years of B&M Quality
- Lifetime Limited Warranty
- Machined B&M Logo
Fits 8.2-inch, 8.5-inch & 8.6-inch GM 10-Bolt
MIA's Description
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | B&M |
| Part Number | B00M 70502 |
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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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