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Banks 19259 High Performance Differential Cover Kit AAM 11.5 GM Dodge

19259 - Z
2001-2019 Chevy/GMC, 2003-2018 Ram,with AAM 11.5" or 11.8" 14 Bolt Rear Axle
Not Available
Pricing: $385.00


The ultimate in rear axle cooling and overall function, this rear axle cover is the ONLY scientifically proven performance rear diff cover on the market. If there's one thing Gale Banks does well, its his R&D. Flat back high capacity covers don't stand a chance!

Banks Ram-Air Differential Cover is unlike any other. After testing covers with flat-backs and those with larger fluid capacities, it was apparent that those covers do not cool as well as advertised and suffer from poor fluid dynamics. As a result, they reduce fuel economy. Banks Ram-Air differential cover increases fuel economy and extends lubrication life!


  • Cools 4X better than flat-back covers
  • Dry-mount high-pressure silicone O-ring seal. No messy RTV clean up when servicing differential
  • Cover mates perfectly with differential housing for unobstructed fluid flow
  • No need to remove cover to change fluid
  • 1/2” Stainless steel sight glass with contrast screen (visual aid) and Viton seal
  • Chrome-plated 12-point flanged M8-1.25x32mm bolts Included

Duramax Diff Cover

Duramax Fuel Mileage

Duramax Axle Temp




Shipping Information

  • Item Requires Shipping
  • 15.0 lbs.
  • W16.0000” x H16.0000” x L10.0000”
  • Free Shipping

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