BM 70505 Cast Aluminum Differential Cover for GM 9.5″ 14 Bolt

SKU: 70505
Designed to fit most vehicles with GM 9.5" 14 Bolt differential, however each vehicle may have other interfering components and adequate clearance and fitment should be verified prior to purchase & installation. Refer to ID guide and measurement diagram for specific dimensions. Check clearances for fit - Gasket Not Included.
Price: $215.95
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B&M Cast Aluminum Differential Covers are 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 and dissipate heat much faster than the stock factory unit to prolong the life of your ring and pinion gears. Additional features include an engraved B&M logo, drain and fill port locations, a magnetic drain plug for catching ferrous metal particles, and complete hardware and installation instructions.

  • 0.5 quarts extra fluid capacity and cooling/strengthen ribs keeps temperature cooler
  • B&M Logo Engraved
  • A356.0-T6 Aluminum Construction
  • Load bolts provide additional support to bearing caps
MaterialA356.0-T6 AluminumGasket IncludedNo
Bolt PatternGM 9.5Carrier Main Cap SupportYes
Thickness (in)3.77Filler Plug IncludedYes
FinishRaw AluminumCall Out Size (in)3.30
Package ContentsAluminum cover, fill & drain plugs, bolts & washers, load bolts & nuts, warrantyBolt Count14
Drain Plug IncludedYes
 California Proposition 65 Information

WARNING: This product can expose you to chemicals including Chromium (hexavalent compounds) which are known to the State of California to cause cancer and birth defects, or other reproductive harm (For more information go to


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