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2018-19 Jeep Wrangler JL - B&M Nodular Iron Diff Covers 12313, 12314YouTube Button

B&M Nodular Iron Dana 44 AdvanTek Rear Differential Cover

2018-2020 Jeep Wrangler JL & 2020 Jeep Gladiator trucks with DANA 44-AdvanTek Rear.

PART# 12313

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$264.00   Suggested Retail
$213.26   Holleydays Price
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Our new Nodular Iron differential covers are specifically designed for serious off-road enthusiasts who aren't afraid to take on large rocks and ruts. This super tough differential cover is designed for the all-new Dana 44 AdvanTek (M220) rear differentials that come standard in all 2018-2020 Jeep Wrangler Rubicon models and all 2020 Jeep Gladiator truck models. Features include all nodular iron construction with a super durable black powder coated clear gloss finish, machined B&M logo and reinforcing ribs to help strengthen the cover and give it rugged good looks. Other features include a magnetic drain plug, a fill port with an o-ringed magnetic dipstick and knurled finish for a sure grip when checking fluid level whether on the trail or at home. All hardware and detailed instructions are included for an easy installation you can do at home. Note: Does Not fit Dana 44 AdvanTek (M210) front differential.


  • Fits New Dana 44 AdvanTeK (M220) Differentials
  • Magnetic Dipstick Captures Fine Metal Particles
  • Super Tough Nodular Iron Construction
  • Fill and Drain Plugs for Easy Servicing
  • Easy-Grip Knurled Finish Dipstick
  • Dipstick for Checking Fluid Level
  • Over 65 Years of B&M Quality
  • Easy Installation


Additonal Fluid Capacity (qts)No
Bolt Count12
Carrier Main Cap SupportNo
Color/FinishBlack Powder Coat
Cover Bolt PatternDana M220
Cover MaterialNodular Iron
Depth (in)2.18
Drain Plug IncludedYes
Emission Code5
Filler Plug IncludedYes
FinishBlack Powdercoated
Gaskets IncludedNo
MaterialNodular Iron
Product TypeDifferential Cover
Studs IncludedYes
Part Number12313



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Designed to fit most vehicles with the new Dana 44 AdvanTek (M220) Rear differential, however vehicles may have other interfering components that may require modifications or moving of existing brackets, require longer cover bolts or different cover bolts, clearance of sway bars etc. - Checking for adequate clearance and fitment for your application should be verified prior to purchase & installation. Refer to ID guide and measurement drawings for specifications.


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      *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

      Some parts are not legal for use in California or other states with similar regulations.

       X  Holleydays 2020 20% off and DD
       X  Holleydays 2020 20% off and DD