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 or Satin/Black Machined
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: 4.9660378 / 5 from 265 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: ["looks","quality","fit","shipping","instructions","finish","packaging","issues","difference","design","craftsmanship","cover","fitment","video","value","install","service","banks","upgrade","engine","sight glass","addition","works","directions","change","plug","cooler","oil","ass","piece"].
"I purchased my cover to protect my rear end when towing my enclosed trailer over 800 miles per trip. I've made 3 trips to this point and so far no issues. The cover was easy to install, fits and looks great, the increased oil capacity is also a plus. I highly recommend this to anyone who tows a trailer or camper."
"Absolutely love this product! Not only was it user friendly to install but the look from behind adds a level of detail that other trucks don’t have. I have already been chatted up twice by other truck guys saying how impressed they are on how it looks and it’s been on less than a week. Great job Banks!"
"The rear suspension track bar and spare tire made the installation more difficult than anticipated. I had to drop my spare tire - a 35X12.5R20 - and raise my truck to let the rear axle drop to tighten & torque the top three bolts."
"Nice quality, appreciate the drain, and window glass which made hitting the right level very easy. As a note, I purchased the sway bar spacers; they are not needed. Not sure if it is because I have factory air leveling or if it is a new design for 25/26, but I don’t have a sway bar. Nice and open to the diff cover. Could a note be added to prevent ordering parts that are not needed. The webpage has the configure component, ‘verify rear suspension setup’ or something like that. Not returning my spacers, I will find something to use them for. Thank you."
"Outstanding upgrade. Easy access to remedy the painful process induced by RAM. Customer service is and goes above and beyond!🇺🇸🇺🇸🇺🇸🇺🇸🇺🇸"
"High quality rear differential cover. Made well and looks great. Easy to install. QR code provides a very detailed installation video which if you follow to the letter the install will be very simple. Be sure to follow their torque instructions vs the factory bolts your truck came with because the there is a difference between the two. Much lower torque on the Banks bolts that come with the cover. Now they just need to develop a transmission pan for a 2024 Chevrolet 2500HD 6. 6 gasser. I’d buy it in a heartbeat."
"It brings peace of mind to me that I have some of the best aftermarket parts on the planet. I know each part is scientifically tested. It brings me confidence and insurance. That For every job I do i will not have technical difficulty to get the job done."
"I've bought a lot of aftermarket stuff for my vehicles over the years, a good deal of it has been Banks products. But one thing I have never bought was an aftermarket diff cover. Years ago i had considered a Mag-Hytec cover for the truck I had then but never bought one. After watching the videos of the development of the Ram-Air cover, I remember thinking that only Gale would put this kind of time and research into a diff cover. So I bought one and I love it! It has everything that the factory should have included. I managed to snag one of the unpainted covers at a great price too! Once again Banks is always a couple steps ahead of the rest."
"Well made, haven’t held a thermal temp gun to it before/after to see the actual difference it made but by touch it’s noticeably cooler"
"We installed all of your products, oil pan, tranny pan, air filter box, oil filter relocation kit and the rear differential cover - out 2021 GMC Denali 3500HD ran as cool as a cucumber! Thank You well worth the investment !"
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