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I've measured cooler temps when towing. Love the look too. Would buy again.
Fitment Note
RAM 6.4L Gas Trucks
Customers must visually confirm which differential cover is installed from factory.
See Fitment Check Graphic Below.
Download and print out the fitment guide to check for clearance.
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.
Why It's Better
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
Fill Plug
304 Stainless Steel Hardware
Sight-Glass with Contrast Screen
Class-Leading Heat Rejection
Magnetic Drain Plug
Patented Ram-Air Scoops
NPT Sensor Port
Key Features
Radiused Ports
Directional Fluid Guides
O-Ring Seal
Precision Fit Machined Surface
Internal Heat Absorption Fins
Simple Fluid Change
Lubricant Raceway
Ram-Air System w/Breakaway Scoops
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 169% more exterior heat radiation surface area than Mag-Hytec, or over 4.5x that of the factory cover.
Heat Absorption Comparison
The 26 internal heat absorption fins add an extra 120in2 to pull heat, or almost 70% more area than stock.
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.
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.
If you want to see for yourself, here is a link to their 75w90 test results.
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.
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.
Fitment Note
Have a Rear Sway Bar Installed or Airbag Suspension?
Make sure you add the Sway Bar Spacer Kit add-on option.
Make sure you add the Sway Bar Spacer Kit add-on option.
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.
Technical Specs
- Weight: 11.7 lbs
- External heat radiation fin count: 24
- Internal heat absorption fin count: 26
- Dimensions: 14.2 in X 13.3 in X 3.8 in
- External heat radiation fin surface area: 533.782 in2
- Internal heat absorption fin surface area: 119.882 in2
- External heat radiation total surface area: 808.81 in2
- Internal heat absorption total surface area: 215.78 in2
- Fasteners: 14 x stainless steel M8-1.25 flange hex bolts
- Material: A380 aluminum diecast with CNC machined surfaces
- Internal Volume: About 4.0 Qts (Check OEM Owners Manual)
Oil service
- Magnetic Drain plug
- Fill port plug
- 20° angled fill port for easy access
- No need to remove cover to change fluid
- 1/2 in sight glass with contrast screen (visual aid) and Viton seal
- Banks recommends Amsoil 75W-90 Severe Gear Synthetic Gear Lube
- Fill level depends on model year: (About 4.0Qts Fill To OEM Level)
U.S. Patent
Installation and Support
Ram-Air Differential Cover Kit
In Black Ops, Machined, and Natural Aluminum
2001-2019 Chevy/GMC, 2003-2018 RAM with AAM 11.5" or 11.8" 14 Bolt Rear Axle
2019-2024 RAM 6.4L See Fitment Note
Patented design cools 5X better than flat-backs
Choose Your Ram-Air Differential Cover Kit
I've measured cooler temps when towing. Love the look too. Would buy again.
Fitment Note
RAM 6.4L Gas Trucks
Customers must visually confirm which differential cover is installed from factory.
See Fitment Check Graphic Below.
Download and print out the fitment guide to check for clearance.
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.
Why It's Better
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
Fill Plug
304 Stainless Steel Hardware
Sight-Glass with Contrast Screen
Class-Leading Heat Rejection
Magnetic Drain Plug
Patented Ram-Air Scoops
NPT Sensor Port
Key Features
Radiused Ports
Directional Fluid Guides
O-Ring Seal
Precision Fit Machined Surface
Internal Heat Absorption Fins
Simple Fluid Change
Lubricant Raceway
Ram-Air System w/Breakaway Scoops
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 169% more exterior heat radiation surface area than Mag-Hytec, or over 4.5x that of the factory cover.
Heat Absorption Comparison
The 26 internal heat absorption fins add an extra 120in2 to pull heat, or almost 70% more area than stock.
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.
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.
If you want to see for yourself, here is a link to their 75w90 test results.
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.
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.
Fitment Note
Have a Rear Sway Bar Installed or Airbag Suspension?
Make sure you add the Sway Bar Spacer Kit add-on option.
Make sure you add the Sway Bar Spacer Kit add-on option.
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.
Technical Specs
- Weight: 11.7 lbs
- External heat radiation fin count: 24
- Internal heat absorption fin count: 26
- Dimensions: 14.2 in X 13.3 in X 3.8 in
- External heat radiation fin surface area: 533.782 in2
- Internal heat absorption fin surface area: 119.882 in2
- External heat radiation total surface area: 808.81 in2
- Internal heat absorption total surface area: 215.78 in2
- Fasteners: 14 x stainless steel M8-1.25 flange hex bolts
- Material: A380 aluminum diecast with CNC machined surfaces
- Internal Volume: About 4.0 Qts (Check OEM Owners Manual)
Oil service
- Magnetic Drain plug
- Fill port plug
- 20° angled fill port for easy access
- No need to remove cover to change fluid
- 1/2 in sight glass with contrast screen (visual aid) and Viton seal
- Banks recommends Amsoil 75W-90 Severe Gear Synthetic Gear Lube
- Fill level depends on model year: (About 4.0Qts Fill To OEM Level)
