Talk to the experts. Call 800.979.0122, 7am-10pm CST, everyday.

REWARDS

GIFT CARDS

DEALS

TRACK ORDER

HELP CENTER

My

List

Menu

Shop

Garage

Cart

Account

Rebate

B&M 11317 Cast Aluminum Differential Cover for AAM 11.5 - BLACK

Rebate

B&M 11317 Cast Aluminum Differential Cover for AAM 11.5 - BLACK
B&M

|

#20011317

B&M 11317 Cast Aluminum Differential Cover for AAM 11.5 - BLACK

$460.95

/each

Factory Shipped

$518.95

Save $58.00


Quantity

Need Help? Call to Order

Add to a list

Share

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

3.6" Overall Thickness, Aluminum, Anodized

    Rebates Available

    See rebate details
    See more details

    Key Specs

    MFG. Part #11317
    BrandB&M
    See more specs

    Need To Know

    Need help?

    855.313.9176
    View the Help Center

    Quick and Easy Returns

    Return Policy

    B&M 11317 Details

    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.

    Application

    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.

    Charts

    Rebates

    Holley IRS Sale 2026

    Save 10% instantly on select products across the Holley family of performance brands during the annual Holley I.R.S.Tax Sale. Instant rebate period has been extended and now runs from February 17, 2026 through April 19, 2026.

    B&M 11317 Specifications

    KEY SPECS
    MFG. Part #11317
    BrandB&M
    GENERAL
    GTIN Code019695113179
    Overall Thickness3.6"
    Material TypeAluminum
    FinishAnodized
    Bolt Count14
    Bolt Hole PatternAAM 11.5
    Bolts/Studs IncludedYes
    Drain Plug IncludedYes
    Filler Plug IncludedYes
    Gaskets IncludedNo
    Call Out Size3"
    Carrier Main Cap SupportYes
    ColorBlack

    Fitment

                                            Customer Impersonation Script