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BANKS RAM-AIR DIFFERENTIAL COVER KIT BLACK/ MACHINED|GM/DODGE 2500/3500|
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        • BANKS RAM-AIR DIFFERENTIAL COVER KIT BLACK/ MACHINED|GM/DODGE 2500/3500|
        • BANKS RAM-AIR DIFFERENTIAL COVER KIT BLACK/ MACHINED|GM/DODGE 2500/3500|
        • BANKS RAM-AIR DIFFERENTIAL COVER KIT BLACK/ MACHINED|GM/DODGE 2500/3500|
        • BANKS RAM-AIR DIFFERENTIAL COVER KIT BLACK/ MACHINED|GM/DODGE 2500/3500|

        BANKS RAM-AIR DIFFERENTIAL COVER KIT BLACK/ MACHINED|GM/DODGE 2500/3500|

        Ram-Air Differential Cover Kit


        Patented design cools 5X better than flat-backs
        Satin Black/Machined
        FOR 2001-2019 CHEVY/GMC, 2003-2018 RAM & 2019-2024 RAM 6.4L ONLY, WITH AAM 11.5" OR 11.8" 14 BOLT REAR AXLE


        CARB E.O. Not Required


        0.0
        Vehicle Specific
        • $395.00

        In stock (11 items available)
        OR

        KEY FEATURES

        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

        24 external radiator fins offer 534 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.

        KEY FEATURES

        Image showing a smooth radiused internal surface

        Radiused Ports

        Radiused ports for smoother fluid flow.
        Animation depicting fluid flow

        Directional Fluid Guides

        Axle-tube guides direct fluid to axle bearings without churn.
        Animation highlighting covers O ring seal

        O-Ring Seal

        Integrated No Mess Viton Seal. Dry-mount silicon high-pressure O-ring seal. No messy RTV required.
        Graphic highlighting covers machined surface

        Precision Fit Machined Surface

        CNC-machined surface ensures precise fit.
        Animation showing internal fins obsorbing heat

        Internal Heat Absorption Fins

        26 Internal absorber fins offer 120 square inches of surface area to transfer heat to external radiator fins without disrupting fluid flow.
        Animation showing oil drain process

        Simple Fluid Change

        No need to remove cover to change fluid.
        Animation highlighting lubricant raceway

        Lubricant Raceway

        Ring gear raceway provides path for fluid flow to pinion and ring gear-bearing sets.
        Graphic showcasing Ram-Air scoops

        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.
        Transparent animation showing differential internal design

        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.
        Animation showing Banks Ram-Air Differentials superior fluid dynamics

        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.
        2D Animation showing Flat-Back covers flawed design

        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.
        2D Animation showing Banks Ram-Air Differentials superior fluid dynamics

        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
        2D Animation showing Flat-Back covers poor cooling ability

        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.
        2D Animation showing Banks Ram-Air scoops superior cooling ability

        HEAT RADIATION COMPARISON

        The Banks Ram-Air cover features deep external fins with 169% more exterior heat radiation surface area than Mag-Hytec, orover 4.5x that of the factory cover.
        Bar chart comparing external heat radiation surface area. Banks has 169% more than flat-backs.

        HEAT ABSORPTION COMPARISON

        The 26 internal heat absorption fins add an extra 120in2 to pull heat, or almost 70% more area than stock.
        Bar chart comparing internal heat absorption area. Banks Ram-Air has 21% more than flat-backs.

        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.
        Test chart showing Banks superior cooling vs AFE and Stock. Banks design cools 118% better.

        KEEPS YOUR DIFF COOL

        And your oil even cooler

        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.
        Cooldown test on flatland after a hill climb

        BANKS RECOMMENDS AMSOIL LUBRICANT

        We searched for information on every popular brand of gear oil. The only company with in-depth knowledge and the willingness to share it was AMSOIL.

        They are every bit as thorough in their development as we are. The more info we discovered, the more we liked how AMSOIL designs and test their products. If you want to see for yourself, here is a link to their 75w90 test results.
        Image of 4 Amsoil lubricant pouches

        MAINTAINS OE FILL LEVEL

        We decided to stick with the manufacturer's suggested viscosity and use AMSOIL Severe Gear Synthetic Extreme Pressure Gear Lube. Fill level remains at the recommended levels as factory.

        Check owners manual for recommended fill level for your specific vehicle.
        Chart comparing fill level requirements. Banks Ram-Air Cover maintains OE fill level.

        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.
        Picture comparing Banks Ram-Air cover to flat-back designs. Banks Ram-Air maintains factory low point.

        FITMENT CHECK


        When using this guide for fitment, make sure that either (a) your truck's full weight is on the wheels, or (b) you lifted the truck by the diff. When the truck is lifted off the ground, your swaybar (if you have one) moves and may cause a false fitment reading.
        2D blueprint showing cross sections of factory differential cover vs Banks Ram-Air Cover

        HAVE A REAR SWAY BAR INSTALLED?

        Make sure you add the Sway Bar Spacer Kit add-on option.


        Photo showing sway-bar spacers
          • SKU
            19249
          • Weight
            11.7 lbs
          • Dimensions (L x W x H)
            13.3 x 3.8 x 14.2 in
          • Manufacturer Part #
            19249
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        • Fitment Type
          Vehicle Specific
        MakeModelYear
        DODGE/RAM2500/35002013-2018 6.7L CUMMINS
        DODGE/RAM2500/35002007.5-2012 6.7L CUMMINS
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