BM 11317 Cast Aluminum Differential Cover for AAM 11.5 – Black

SKU: 11317
Designed to fit most 2001-2011 GM2500/3500 and 2003-2013 Dodge/Ram 2500/3500 with AAM 11.5 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.
Price: $252.95
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Verify This Part Fits Your Vehicle

This B&M Cast Aluminum Differential Cover for the 2001-2011 GM 2500/3500 truck as well as 2003-2013 Dodge/Ram 2500/3500 trucks is designed to strengthen the differential by preventing case distortion and ring gear & bearing cap deflection. Constructed of military grade (MIL-A-8625) black anodized 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.

  • Fill Plug and Magnetic Drain Plug for Easier Servicing
  • Additional Fluid Capacity
  • Made in the USA
  • Black Anodized Aluminum Construction
Filler Plug IncludedYesDifferential Thickness (in)3.6
Bolt Count14Call Out Size (in)3
Gasket IncludedNoColor/FinishBlack Anodized
Bolt/Studs IncludedYesMaterialA356.0-T6 Alumininum
Differential Cover Bolt PatternAAM 11.5Drain Plug IncludedYes
Package ContentsCover, fill plug, drain plug, bolts, washers, load bolts , nuts, and instructionCarrier Main Cap SupportYes
 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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