The fill and drain plug are perfectly placed. Sight glass is genius. Laser temp gun says it's running cooler!
Charles K — South Burlington, VT
Why you need it
Banks Ram-Air® differential cover extends lubrication life by keeping your fluid cooler, thanks to its superior fluid and aerodynamics. The system cools 5X better than high-capacity aftermarket covers in on-road towing tests. It cools 118% better than competitors in 200 hp 60mph sustained tests.
Patented Forced-Air Cooling Design
Ram-Air scoops force air through heat radiation fins
FlowThru Fins® transfer heat through the cover to the exterior
High velocity air overcomes "dear air zone" behind differential
Perfect Fluid Dynamics
Reduces fluid aeration
Ring gear raceway guides fluid to ring & pinion interface
Fluid guided to axle tubes and bearings
Easier Maintenance
View fluid level through sight glass
Angled fill port
Magnetic drain plug
Retains stock fluid quantity
Increased distance between service intervals
Thoughtfully Engineered
Temp sensor port
O-ring seal, no messy RTV
Maintains stock ground clearance
Ram-Air scoops break away if hit
Fitment Note
Does Not Fit Any Super Duty With Rear Sway Bar Does Not Fit Any F-350 DRW Does Not Fit 2023-25 High-Output
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
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.
Key Features
Die-Cast Aluminum Construction
A380 aircraft aluminum die-cast
for exceptional strength and precise fit.
Fill Plug
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
694.2 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
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
22 Internal absorber fins offer
103.1 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
Forced Air Cooling
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.
Heat Radiation Comparison
The Banks Ram-Air cover features deep external fins with 160% more exterior heat radiation surface area than Mag-Hytec, or over 5x that of the factory cover.
Heat Absorption Comparison
The 22 internal heat absorption fins add an extra 222.2in2 to pull heat, or almost 70% more area than stock.
The Superior Choice, Backed by 18 Months of Testing
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
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.
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.
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.
The fill and drain plug are perfectly placed. Sight glass is genius. Laser temp gun says it's running cooler!
Charles K — South Burlington, VT
Why you need it
Banks Ram-Air® differential cover extends lubrication life by keeping your fluid cooler, thanks to its superior fluid and aerodynamics. The system cools 5X better than high-capacity aftermarket covers in on-road towing tests. It cools 118% better than competitors in 200 hp 60mph sustained tests.
Patented Forced-Air Cooling Design
Ram-Air scoops force air through heat radiation fins
FlowThru Fins® transfer heat through the cover to the exterior
High velocity air overcomes "dear air zone" behind differential
Perfect Fluid Dynamics
Reduces fluid aeration
Ring gear raceway guides fluid to ring & pinion interface
Fluid guided to axle tubes and bearings
Easier Maintenance
View fluid level through sight glass
Angled fill port
Magnetic drain plug
Retains stock fluid quantity
Increased distance between service intervals
Thoughtfully Engineered
Temp sensor port
O-ring seal, no messy RTV
Maintains stock ground clearance
Ram-Air scoops break away if hit
Fitment Note
Does Not Fit Any Super Duty With Rear Sway Bar Does Not Fit Any F-350 DRW Does Not Fit 2023-25 High-Output
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
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.
Key Features
Die-Cast Aluminum Construction
A380 aircraft aluminum die-cast
for exceptional strength and precise fit.
Fill Plug
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
694.2 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
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
22 Internal absorber fins offer
103.1 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
Forced Air Cooling
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.
Heat Radiation Comparison
The Banks Ram-Air cover features deep external fins with 160% more exterior heat radiation surface area than Mag-Hytec, or over 5x that of the factory cover.
Heat Absorption Comparison
The 22 internal heat absorption fins add an extra 222.2in2 to pull heat, or almost 70% more area than stock.
The Superior Choice, Backed by 18 Months of Testing
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
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.
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.
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.
The Ram-Air® Differential Cover Kit is highly regarded for its excellent quality, superior design, and ease of installation. Customers praise its well-made construction, perfect fit, and top-notch finish, making it a popular choice for upgrading standard parts.
"Thoroughly impressed with fit, finish and design." — Fredrick T.
"Quality is unbelievable so simple and best on the market by far." — Chawn K.
"Easy installation, better cooling performance for towing and looks great!" — Kyle
Reviews
Thanks, Banks! You saved my bacon.
"This is Chuck the Truck, a 2004 F-350 6. 0L Lariat short bed extended cab Power Stroke. I run a small veteran-owned and operated construction company called Open Bolt Solutions. If you don't get the joke, ask an Army or Marine vet. My truck works hard on a daily basis. He's not pretty, but he's built to work. This Banks diff cover saved me on my trip across the country last summer. I blew a wheel seal in the middle of nowhere, Montana. If I had the stock diff cover, I wouldn't have been able to tell if I still had any oil in the diff, and it would have had me calling for a tow truck. Instead, I had the Banks diff cover with a sight glass window, so I could see that I still had oil. I was able to limp to a Walmart and buy up their supply of gear oil. From there, I limped all the way across Montana to Missoula, where a buddy of mine lives, and I could fix the wheel seal in his driveway. Thanks, Banks! You saved my bacon."
— Galen F. (5/5)
Rear differential cover was easy
"Rear differential cover was easy to install. The fitment was perfect. The over finished product was great."
— Richard J. (5/5)
Quality…
"I received and installed the Diff Cover on my 2017 F-250 6. 7 Powerstroke the other day. No noticeable difference in performance as expected but that is well made and with the drain plug, next diff change will be minutes and a pleasure to do."
— Daniel S. (5/5)
Perfect in every way, no
"Perfect in every way, no leaks, no installation issues, and looks very nice. 12 bolt 2021 f-250 sterling axle"
— Austin M. (5/5)
Banks differential cover
"I usually don’t do aftermarket stuff to my vehicles, but when I do, the only one I trust is Banks. I have a few other things from Banks on my vehicle, and I’ve always loved it."
— Chad C. (5/5)
Solid quality upgrade!!
"This cover is awesome and built very well."
— Vastine V. (5/5)
Serviceable diff cover
"Great design! If you are tired of always using high temp RTV to seal your cover. This is what you need to look at. 27 year old axle, fitment was perfect. The O-ri g doesn't leak. Don't be a fool. Put a cover on that you can see when the service needs to be done on the fluid. Make that service you do easy and simple. Far as how it flows air in and out I'm no expert but that's just an added bonus to the design. The serviceability is what should draw your attention, especially if you have an older truck that doesn't have a drain plug. The sight glass is another feature that just adds to the "wow they really thought this out factor". Having one of your intercooler kits on my truck is what sold me on a part that most think is just jewelry on your rig. Again fitment is spot on, features that actually help make service easy and yes the O-ri g seals and doesn't leak even a drop of fluid. Just spend the money, install it correctly and you won't have any regrets on your purchase. A must for older axles that want to replace your old stamped cover with something that just makes more and more sense as you install and service as needed."
— Austin D. (5/5)
Diff cover
"Easy install and will make replacing the oil way easier!"
— Mike P. (5/5)
Just installed the cover, liked
"Just installed the cover, liked the fill port on the top and the O-ring seal."
— Daniel F. (4/5)
Smokes The Stock Cover
"This Banks Diff cover is a serious piece of hardware. It is solidly constructed in a beautiful style. It changes the whole appearance of the axle. I also like the fact there’s a drain plug. Changing fluid with stock cover is a pain in the ass and time consuming. Installation was a breeze. I would definitely recommend this diff cover. I’m glad I made the purchase."
— Rick R. (5/5)
Q&A
I have a 2015 F350 DRW 4X4 with the Dana 80 diff cover, do you make one yet? The owner's manual says it's a M80
We don't have one available at this time, but may in the future.
Will this fit my 1993 F-350 DRW? I do have the 12 bolt Sterling 10.25, but it is a dually. My understanding is that the covers are the same dimensions but you and most other brands say the covers are SRW only.
This differential will not fit on a DRW vehicle we do note this in the fitment section on the website.
I have a 100k mile powertrain warranty through Ford on my F350. Do you know if installing this cover would void the warranty on the truck?
Hey, thanks for messaging us. The stance on aftermarket parts varies widely from dealer to dealer. This is why we suggest consulting with your dealer to learn how they choose to enforce Stellantis' warranty policies. Generally speaking, there are three types of dealerships. 1. Dealers that embrace and install performance upgrades. 2. Dealers who will overlook an aftermarket part because they know it's harmless. 3. Dealers who are militant about aftermarket accessories and will deny a warranty.
The video, airflow diagrams, and virtual presentations only show airflow in, but do not show airflow out. Where does the air exit so continuous fresh cool air can enter?
The rear of the differential is open for the air to flow away. its initially curved up to cool the fins then flows freely away along with the heat.
Was concerned about mud or snow getting packed inside cover is this a possibility?
As long it is not extremes like rock crawling and high-speed trophy trucks, the Ram Air diff cover will be fine. The scoops don't hang below the differential housing, So, it's unlikely that they'll get filled with mud or debris. However, If you are driving through deep mud regularly and the scoops get filled with mud, the cover will still cool the gear oil better than stock and all high-capacity covers. The fins are longer and thinner than any other cover and do most of the heat rejection. To remove any debris, since the scoops are open on both ends, you can simply hose them out. As an added safety net, the Diff covers Ram-Air scoops have a break away point that prevents damage if the scoop is snagged. In short, if a scoop gets caught, it will break away and not rip the cover off.
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