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Banks Power AAM 11.5" 14-Bolt Rear Ram-Air Differential Cover

2001-2019 GM 2500HD/3500HD | 2003-2018 Dodge Ram 2500/3500* (With AA14-11.5 Axle)
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★★★★★ ★★★★★ 5 Reviews
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Banks started from scratch while sparing no expense in the creation of the Banks Power AAM 11.5" 14-Bolt Rear Ram-Air Differential Cover. Gale set out in search of the answer to the age old "Do rear differential covers provide any real benefit or are they just bling?" After many, many hours of research, Gale and the Banks Engineering Team uncovered two underlying problems with the aftermarket differential covers on the market; poor air flow as well as flawed fluid dynamics. Both issues are not a concern with the Banks Ram-Air Differential Cover.

After performing tests on covers with a flat-back design and larger fluid capacities, Banks found that the hard angle of the flat-back causes poor fluid dynamics. With computer-aided designing and road-testing, the Banks Ram-Air differential cover has improved fluid dynamics to help increase fuel economy and extend lubrication life. It also cools 118% better than its flat-back competitor at sustained 60mph dyno tests and 4X better in on-road towing tests!

The Banks Ram-Air Differential Cover is constructed from A380 aluminum diecast featuring internal and external cooling fins, patented Ram-Air scoops to flow air around the cooling fins, dry-mount silicone O-ring seal, and includes chrome-plated mounting hardware. There's also no need to remove the cover to service the oil. Banks includes a magnetic drain plug, magnetic fill plug which is at a 20° angle for easier filling. A 1/2" stainless steel sight glass gives you the ability to monitor your fluid level and condition.

  • 4-Quart Capacity
  • Patented Ram-Air Scoops
  • A380 Aluminum Construction
  • Internal & External Cooling Fins
  • Chrome-Plated Mounting Hardware
  • Dry-Mount High-Pressure Silicone O-Ring Seal
  • Improved Fluid Dynamics for Unobstructed Fluid Flow
  • Limited Lifetime Warranty
Application Note: 2014-2018 Ram 2500 with coil spring rear suspension requires a sway bar spacer kit (See Related Parts Below).

Product Options

19259 Raw Aluminum
19249 Textured Black Powder Coat
19269 Black Ops


  • Manufacturer Name Banks Power
  • Shipping Weight 11.70 lb.
  • Shipping Length 13.3 in.
  • Shipping Width 3.8 in.
  • Shipping Height 14.2 in.
  • Fuel Type Diesel / Gas
  • Warranty Yes
  • Warranty Info Limited Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
5.0/5 Stars out of 5 Reviews
Differential Cover
(Greeley Hill) | August 7th, 2020
I gave it 5 stars because I like as for performance and quality it is rated good, Durability is a long term thing that remains to be seen. The seller had a good price and shipping was prompt. They are recommended.
Great product
(Sioux Falls SD) | August 1st, 2020
Any thing Gale Banks puts out is a good product just not cheap.
Verified Buyer
Banks is more than bling for sure! Order#1153237
(Elk Township, NJ) | May 13th, 2020
Banks definitely produced a cover that both looks good and WORKS good. The quality is second to none (as expected form Banks). Very easy installation. If I had one gripe (and it's microcosmic) is that you need to take a 13mm socket (for the stock cover bolts) and a 10mm 12 point socket for the Banks bolts. But my favorite thing on this cover is that it will save $$ (not just by lengthening the life of the oil, but by conserving the stock amount of 4 quarts!). If you're in the market for a rear cover don't think twice - buy this once and be done.
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