2019-2024 Ram 2500 & 3500 or Silverado & Sierra 2500 & 3500 Banks Ram-Air® Rear Differential Cover Features:
About This Product
Banks Ram-Air® Differential Cover is the best one on the market without question. Thanks to its superior fluid flow and aerodynamics, the Ram-Air® Cover out-cools stock and flat-back high-capacity covers and does so with less lubricant. Extend your gear life, use less fluid, and save money between fluid changes with Banks.
Note: 2019-24 RAM 6.4L Gas Trucks Customers must visually confirm which differential cover is installed from factory.
Also fits OEM locker style differentials
Does Not Fit Ram Trucks With Airbag Suspension Alone
Sway Bar Spacers (#19249-2) required on Ram Trucks with OEM sway bar.
Key Highlights
- New patented design features Ram-Air scoops for fastest cooling
- Provides cold high velocity air, overcoming "dead air zone" behind differential
- Scoops force air up and into massive heat radiation fins
- Engineered to break-away if snagged on an obstacle
- Banks cools 5X better than flat-back covers in on-road towing tests over the same road, same weather, operator and vehicle
- Cools 118% better than flat-backs in 200hp 60mph sustained tests
- Dry-mount high-pressure silicone O-ring seal. No messy RTV clean!
- Internal fins transfer heat through the cover into the external fins
- Clears spare tire heat shield, Panhard bars and other components
- Does not sacrifice any ground clearance
- Limited Lifetime Warranty
Fluid Dynamics
- Axle tube lubricant guides directs lube to bearings w/o overfilling
- Cover mates flush with differential housing for smooth fluid flow
- Ring gear raceway controls fluid flow to the pinion and bearings
- Low fluid aeration means longer fluid life
Technical Specs
- Weight: 13.72 lbs
- External heat radiation fin count: 25
- Internal heat absorption fin count: 22
- Dimensions: 14.09 in X 13.74 in X 4.16 in
- External heat radiation fin surface area: 677.64 in2
- Internal heat absorption fin surface area: 117.26 in2
- External heat radiation total surface area: 897.94 in2
- Internal heat absorption total surface area: 229.70 in2
- Fasteners: 14 x stainless steel M8-1.25 flange hex bolts
- Material: A380 aluminum diecast with CNC machined surfaces
- Internal Volume: About 4.4 Qts (Check OEM Owners Manual)
Oil service
- Magnetic drain plug
- Magnetic fill port plug
- 20° fill port for easy access
- No need to remove cover to change fluid
- 1/2 in sight glass with contrast screen (visual aid) and Viton seal
- Banks recommends Amsoil 75W-90 Severe Gear Synthetic Gear Lube
- Fill level depends on model year: (About 4.4Qts Fill To OEM Level)
Specifications
When it comes to product development, we only make products that increase performance and beat the competition. So when we tested the popular Diff Covers on the market, we were shocked to find out that they actually hurt performance. This lead to the development of something so New and Incredible that our performance design has a United States Patent.
Look, when we set out to build a product for your vehicle, we only engineer the best. What else would you expect from a company with a winning legacy that spans decades. We are here to win, and we just did (AGAIN) in a huge way
Why It's Better
Introducing the Banks Power Ram-Air® Diff Cover Kit Patented design cools 5X better than flat-backs
Banks Ram-Air® differential cover extends lubrication life, retains fuel economy, and rejects heat faster than any other cover on the market.
Die-Cast Aluminum Construction
A380 aircraft aluminum die-cast for exceptional strength and precise fit.
Magnetic Fill Plug
Magnetic fill plug. 20° angle for easy fill. Simplifies oil changes.
304 Stainless Steel Hardware
Hex flanged mounting bolts.
Sight-Glass with Contrast Screen
Sight-glass with contrast screen and Viton O-ring seal.
Class-Leading Heat Rejection
25 external radiator fins offer 677.64 square inches of surface area to ensure optimal heat rejection.
Magnetic Drain Plug
Recessed magnetic drain plug. Simplifies oil changes.
Patented Ram-Air Scoops
Ram-Air system directs cool high-velocity air through radiator fins, eliminating the dead zone. Designed with breakaway scoops.
NPT Sensor Port
1/8in NPT port for transmission temp monitoring
Radiused Ports
Radiused ports for smoother fluid flow.
Directional Fluid Guides
Radiused ports for smoother fluid flow.
O-Ring Seal
Integrated No Mess Viton Seal. Dry-mount silicon high-pressure O-ring seal. No messy RTV required.
Precision Fit Machined Surface
CNC-machined surface ensures precise fit.
Internal Heat Absorption Fins
Internal absorber fins offer 120 square inches of surface area to transfer heat to external radiator fins without disrupting fluid flow.
Simple Fluid Change
No need to remove cover to change fluid.
Lubricant Raceway
Ring gear raceway provides path for fluid flow to pinion and ring gear-bearing sets.No need to remove cover to change fluid.
Ram-Air System w/Breakaway Scoops
Ram-Air scoop break away point prevents damage if scoop is snagged.
Purpose Built
The Banks Engineering team’s goal was to perfect fluid flow and reject BTUs from the fluid as fast as the ring and pinion puts them in. If the fluid flow is impeded in any way, it results in resistance and aeration which reduce fuel economy and creates heat, thereby degrading the fluid and decreasing the lifespan of the gearset.
Outperform The Competition, For Less
Thanks to its superior fluid and aerodynamics, the Ram-Air® Cover out-performs stock and flat-back high-capacity covers and does so with less lubricant. Increased distance between service intervals and less lubricant means you'll save money while extending gear life.
Flat-Back Fail
Extra capacity "Flat-Back" covers have worse fluid dynamics than stock. Effectively splattering oil at a wall reducing lubrication on key components and increasing wear-tear and heat.
Banks Does It Right
With the proper distance between the ring gear and raceway, oil is lifted up and around the differential. The internal fluid guides directs the flow exactly to where it's needed.
Flat-Backs Dead Air
The competition has no way of directing airflow, their covers leave a deadzone so temperatures rise faster and fall slower, meaning your oil works harder and components wear faster, costing you fuel economy
Ram-Air Engineering
The Banks differential cover is fundamentally different from its competition because it utilizes Ram-air scoops that direct air through channeled fins, cooling the differential and internal oil temperatures.
The Superior Choice, Backed by 18 Months of Testing
What began with a simple question, resulted in millions of video views, innovation, and another patented Banks product. All other manufacturers simply copied previous designs. They all run on the belief that "more oil means cooler temps." The Banks Engineering Team uncovered two underlying problems with aftermarket covers; poor air flow and flawed fluid dynamics. The Banks Ram-Air® differential cover solves both issues.
Keeps Your Diff Cool
Tests were performed on a stretch of California’s infamous Grapevine (Interstate 5) on the same truck, with the same driver and the same load, at the same time of day and same temperature. After testing covers with flat-backs and those with larger fluid capacities, it was apparent that these covers do not cool as well as advertised, suffer from poor fluid dynamics, and they all make no use of airflow to cool actively
Ground Clearance
Our patented Ram-Air scoops are designed to increase airflow over the rear differential without sacrificing ground clearance. In fact, our differential cover retains the same low point as factory and competitors.
Fitment Note: Have a Rear Sway Bar Installed or Airbag Suspension? Make sure you add the Sway Bar Spacer Kit add-on option. Does Not Fit Ram Trucks With Airbag Suspension
Fitment:
- 2019-2024 Ram 6.7L Cummins with 11.5" AAM rear end
- 2019-2024 Ram 6.7L Cummins with 11.5" AAM rear end
- 2020-2024 Silverado 2500 6.6L Duramax with 11.5" AAM rear end
- 2020-2024 Sierra 2500 6.6L Duramax with 11.5" AAM rear end
- 2020-2024 Silverado 3500 6.6L Duramax with 11.5" AAM rear end
- 2020-2024 Sierra 3500 6.6L Duramax with 11.5" AAM rear end
For 14-bolt 11.5" or 12" AAM rear ends only: this differential cover will only fit trucks equipped with 14-bolt 11.5" or 12" AAM rear ends. 2019-2024 Ram 6.4L Hemi models will need to visually verify their rear end type by the differential cover. This particular differential cover will only fit 6.4L Hemi Rams with curved edges on their stock differential cover.
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