B&M Hi-Tek Aluminum Differential Cover for GM 8.875-inch 12-bolt Truck

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Part
B&M 70504
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GM 8.875-inch 12-bolt Truck Differential Cover.

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.

B&M Hi-Tek Aluminum Differential Cover for GM 8.875-inch 12-bolt Truck 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
More Information
PartB&M 70504
Manufacturer Part Number70504
UPC019695705046
BrandB&M
Bolt PatternGM 8.875 Truck
Color FinishRaw Aluminum
Emission Code5
MaterialA356.0-T6 Aluminum
Part TypeDifferential Cover
Typeproduct

Material
A356.0-T6 Aluminum
Bolt Count
12
Bolt Pattern
GM 8.875 Truck
Color/Finish
Raw Aluminum
Product Type
Differential Cover
Emission Code
5
Thickness (In)
3.62
Gasket Included
No
Call Out Size (In)
3.27
Drain Plug Included
Yes
Filler Plug Included
Yes
Carrier Main Cap Support
Yes
California Proposition 65 Required
Yes
California Proposition 65 Chemical Name
Chromium (hexavalent compounds)

  • Aluminum cover
  • fill & drain plugs
  • bolts & washers
  • load bolts & nuts
  • warranty

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