Fitment Alert:
Does Not Fit F-350 DRW
Does Not Fit 2023-24 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
Banks Ram-Air® differential cover extends lubrication life, retains fuel economy, and rejects heat faster than any other cover on the market.
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.
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.
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.
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.
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
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.
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.
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
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.
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.
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.
Download and print out the fitment guide to check for clearance. 
U.S. Patent 10,443,705 B1
In Black Ops or Satin/Black Machined
2017-24 Ford F250 HD Tow Pkg, Tremor, and F350 SRW, with Dana M275 Rear Axle 14-bolt
Patented design cools 5X better than flat-backs
Fitment Alert:
Does Not Fit F-350 DRW
Does Not Fit 2023-24 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
Banks Ram-Air® differential cover extends lubrication life, retains fuel economy, and rejects heat faster than any other cover on the market.
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.
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.
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.
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.
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
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.
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.
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
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.
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.
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.
Download and print out the fitment guide to check for clearance.
U.S. Patent 10,443,705 B1
Overall rating: 4.99 / 5 from 100 reviews.
The Ram-Air® Differential Cover Kit is praised for its easy installation, excellent fit, and top-notch quality. Customers also appreciate its great looks and fast, efficient shipping, which contributes to its value for money.
Review topics: ["looks","quality","fit","shipping","design","finish","video","issues","service","comparison","packaging","cover","install","banks","directions","engine","cooler","leaks","hardware","works","sight glass","5 stars","piece","fluid","temps","miles","parts","mph","backs","powder coat"].
"This is a must have and had kept my axle much cooler than stock. Looks much cooler too! Heavy towing is now stress free for me in the Rocky Mountains. Excellent product design and the highest quality craftsmanship! Just wish Banks made a transmission pan for my 2019 F350 6R140. Amsoil is also the superior fluid for this differential cover; love that they offer this as a special add on! 5 Stars -Bob Hayford"
"Easy installation, kid could do. Just so I let my 7yr old help me. He did great following directions to spec. Haven’t had a single issue. Would buy again and waiting on oil pan for the 6.7l Powerstroke 2022"
"I drive a 24 f250 lariat powerstroke 6.7. I bought the differential cover kit for my truck, but I had issues. It didn’t fit properly on my model. I believe banks doesn’t have that item yet."
"Fit perfectly, looks good. Can not say if it runs cooler yet"
"I wish I did this sooner! Took the temp down by about 30 degrees"
"Temp is 15-20 degrees cooler with it."
"Fit and finish were perfect. O ring installs just as directions advise. Easy installation and looks fantastic of course. Time will reveal true value of an excellent design."
"This thing deserves 10 stars. Beautifully designed and executed. Installed on the garage floor. I don’t have a temperature probe connected but anyone with half a brain can see it will improve temperatures. I appreciate the site glass, drain plug that doesn’t compromise diff cover seal and fill plug. 1000% love this thing I’m waiting with baited breath for the transmission pan and oil pan on my 2022 f350 power stroke as I do tow a race trailer during summer months. Please get this going guys and let me know when I can buy."
"So far so good. Looks cool, hope the science behind it is legit. Can't tell from the cab. . ."
"Super well made!!very happy with it. 10 out of 10"
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