Sale

Drivetrain Differentials and Rear-End Components

B&M

DIFF COVER,GM 8.875" TRUCK 12 BOLT CAST

$363.95 $334.95 Save $29.00

SKU: B00M 70504

In Stock
In Stock
Ships by Aug 6
Free Shipping over $100
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 70504

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, 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. Note: Gasket not included.

Features:

  • Load Bolts for Additional Support for Bearing Caps
  • Magnetic Drain Plug for Easy Servicing
  • Additional .50-quart Fluid Capacity
  • A356.0-T6 Aluminum Construction
  • Over 65 Years of B&M Quality
  • Lifetime Limited Warranty
  • Machined B&M Logo

GM 8.875-inch 12-bolt Truck Differential Cover.

MIA's Description

The B&M Hi-Tek Differential Cover (70504) is designed to strengthen the differential by preventing case distortion and ring gear & bearing cap deflection. Constructed of A356.0-T6 aluminum, these rugged covers significantly increase the fluid capacity (0.50 quarts extra) and dissipate heat much faster than the stock factory unit to prolong the life of your ring and pinion gears. It includes an engraved B&M logo, drain and fill port locations, a magnetic drain plug for catching ferrous metal particles, and comes with complete hardware and installation instructions.

Fitment

Fitment Guaranteed

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Specifications

BrandB&M
Part NumberB00M 70504

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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