Also fits OEM locker style differentials
Sway Bar Spacers (#19249-2) required on Ram Trucks with OEM sway bar.
Note: 2019+ RAM 6.4L Gas Trucks
Customers must visually confirm which differential cover is installed from factory.
See Fitment Check Graphic Below.
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.
Does Not Fit Ram Trucks With Airbag Suspension Alone See Below
✗
Airbags Alone✔
Airbags + Coils✔
Airbags + Leaf Springs✔
Leaf Springs + ShocksAlso fits OEM locker style differentials
In Black Ops, Machined, And Natural Aluminum
2019-2026 RAM and 2020-2026 Chevy/GMC, with 11.5" or 12" 14-Bolt AAM Rear Axle
RAM 6.4L See Fitment Note
Patented design cools 5X better than flat-backs
Also fits OEM locker style differentials
Sway Bar Spacers (#19249-2) required on Ram Trucks with OEM sway bar.
Note: 2019+ RAM 6.4L Gas Trucks
Customers must visually confirm which differential cover is installed from factory.
See Fitment Check Graphic Below.
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.
Does Not Fit Ram Trucks With Airbag Suspension Alone See Below
✗
Airbags Alone✔
Airbags + Coils✔
Airbags + Leaf Springs✔
Leaf Springs + ShocksAlso fits OEM locker style differentials
Overall rating: 4.970339 / 5 from 236 reviews.
The Ram-Air® Differential Cover Kit by Banks is highly regarded for its superior fluid flow, aerodynamics, and excellent finish. Customers appreciate the product's impressive packaging, easy installation, and the added features like the sight glass. The quality and upgrade potential make it a top choice for truck owners.
Review topics: [fit, looks, instructions, install, quality, service, finish, issues, packaging, difference, design, shipping, craftsmanship, fitment, value, works, cover, banks, engine, upgrade, sight glass, addition, directions, oil, plug, change, ass, cooler, piece, hardware].
"I have purchased several different products from Banks and I honestly feel the quality in each. These folks are masters at design, customer service and the packaging. I will gladly spend a couple more dollars for American made quality any day. Im an auto enthusiast and enjoy upgrading my vehicles and have had the best luck with the fit and finish of EVERY SINGLE item from them. Thank you Banks team !"
"Easy installation. Remove the old cover, clean the flat surface with some Scotch brite install fill and you are done! Great look. Easier install with the spare tire dropped, but can be done in place"
"Flawless fit and finish, perfect sealing, just too bad it’s hidden under the truck. Couldn’t be more straightforward to install and gave me the drain plug and sight glass I needed. 2024 Silverado 2500HD 4WD"
"Definitely easiest part I think I’ve ever installed on a vehicle. Love the looks. Making a long haul at the end of the month and will be able to judge performance then. Extremely satisfied at this point."
"I recently installed the cover and am very happy with how it turned out. Gives the rear of the truck a buff look and ease of service is a lot better. Highly recommended if you plan to do these services yourself and want better cooling on the diff for heavy towing or off road use!"
"There's two parts to this review; first is the product and installation, second is issues as mentioned in title. The cover itself and basic installation had no issues. All I needed to look for were bolt torque and oil specs; it's intuitively easy to install. The cover O-ring is a type I've dealt with, before. So, that's all good. This cover radiates quality. For GM owners that have an aftermarket sway bar (in particular, a Roadmaster), you'll need to fabricate spacers. You'll only need to space out on the shock mounts. I took a piece of 1X3X12 steel, cut in half to make the pads. You can use the Roadmaster shim as a template for locating the holes, and ofc will need bolts 1" longer. I did put the sway bar back before install, but it goes without saying it'll be easier with it off the shock mounts. There's ample clearance once in place; it's just to facilitate torquing the bottom three bolts."
"After I received my cover the first thing I noticed was the quality of workmanship that went into it as I was installing it the fit and finish are unmatched. I have never seen an aftermarket company pit this kind of effort into producing this level of quality"
"Really had no intention on purchasing this. Also don't feel like i tow enough with my truck to actually NEED it. But i was looking for some fun stuff for my new 2026 ram 2500. I happened across a YouTube video from a year or 2 ago about Gale talking about the science behind it and comparing it to the competitors. It was like a late-night old-school infomercial that sucks you in. Boy did i get sucked in. I had to buy it with all that science. Still not sure i need it. But God does it look badass! If it works as good as it looks, it was well worth it!!"
"Just received and installed my diff cover today. Great looking piece, installation was straight forward and all hardware was included. One thing I would highly recommend would to order the sway bar spacer kit as the sway bar is extremely close to the cover."
"I simply love my Banks products. My GMC dealership gave me a compliment on the various Banks parts that I have installed. Thanks Mr. Banks!"
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