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Banks Power AAM 11.5" 14-Bolt Rear Ram-Air Differential Cover
★★★★★
Vehicle Fitment For:
2001-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7/LLY/LBZ/LMM/LML/L5P | 2003-2018 Dodge Ram 2500/3500* (AAM 11.5")
See full application list below
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Description
Banks started from scratch while sparing no expense in the creation of the Banks Power AAM 11.5" 14-Bolt Rear Ram-Air Differential Cover. Banks set out in search of the answer to the age-old "Do rear differential covers provide any real benefit or are they just bling?" After many, many hours of research, Gale and the Banks Engineering Team uncovered two underlying problems with the aftermarket diff covers on the market; poor air flow as well as flawed fluid dynamics. Both issues are not a concern with the Banks Ram-Air Diff Cover.
After performing tests on covers with a flat-back design and larger fluid capacities, Banks found that the hard angle of the flat-back causes poor fluid dynamics. With computer-aided designing and road-testing, the Banks Ram-Air differential cover has improved fluid dynamics to help increase fuel economy and extend lubrication life. It also cools 118% better than its flat-back competitor at sustained 60mph dyno tests and 4X better in on-road towing tests!
The Banks Ram-Air Differential Cover is constructed from A380 aluminum diecast featuring internal and external cooling fins, patented Ram-Air scoops to flow air around the cooling fins, dry-mount silicone O-ring seal, and includes chrome-plated mounting hardware. There's also no need to remove the cover to service the oil. Banks includes a magnetic drain plug, and a magnetic fill plug which is at a 20° angle for easier filling. A 1/2" stainless steel sight glass gives you the ability to monitor your fluid level and condition.
Features:
- Ram-Air System
- Magnetic Fill Plug
- Lubricant Raceway
- 1/8” NPT Sensor Port
- Directional Fluid Guides
- Patented Ram-Air Scoops
- Internal Heat Absorption Fins
- Class-Leading Heat Rejection
- Precision Fit Machined Surface
- Sight-Glass with Contrast Screen
- Die-Cast A380 Aluminum Construction
- Includes 304 Stainless-Steel Hardware
- Radiused Ports For Smoother Fluid Flow
- Does Not Sacrifice Any Ground Clearance
- Magnetic Drain Plug For Simple Fluid Changes
- Engineered To Break-Away If Snagged On An Obstacle
- Dry-Mount High-Pressure Silicone O-Ring Seal. No More Messy RTV
- Clears Spare Tire Heat Shield, Panhard Bars, And Other Components
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)
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)
FLUID DYNAMICS:
Low Fluid Aeration Means Longer Fluid Life
Cover Mates Flush With Differential Housing For Smooth Fluid Flow
Ring Gear Raceway Controls Fluid Flow To The Pinion And Bearings
Cover Mates Flush With Differential Housing For Smooth Fluid Flow
Ring Gear Raceway Controls Fluid Flow To The Pinion And Bearings
Axle Tube Lubricant Guides Directs Lube To Bearings Without Overfilling
OIL SERVICE:
Magnetic Drain Plug
Magnetic Fill Port Plug
20° Angled Fill Port For Easy Access
No Need To Remove Cover To Change Fluid
Magnetic Drain Plug
Magnetic Fill Port Plug
20° Angled Fill Port For Easy Access
No Need To Remove Cover To Change Fluid
Fill Level Depends On Model Year: (Approx. 4.0 Qts Fill To OEM Level)
1/2-inch Sight Glass With Contrast Screen (Visual Aid) & High-Quality Seal
1/2-inch Sight Glass With Contrast Screen (Visual Aid) & High-Quality Seal
APPLICATION NOTE:
Does Not Fit Ram Trucks With Airbag Suspension Alone.
Sway Bar Spacers (#19249-2) required on 2014-2024 Ram 2500/3500 Trucks with OEM sway bar.
Sway Bar Spacers (#19249-2) required on 2014-2024 Ram 2500/3500 Trucks with OEM sway bar.
Manufacturer Warranty*:
Limited Lifetime
Limited Lifetime
Instructions & Tech Info
Installation Info
Recommended Specialty Tool
Product Options
| PART NUMBER | COLOR |
|---|---|
| 19259 | Raw Aluminum |
| 19249 | Textured Black Powder Coat |
| 19269 | Black Ops |
Reviews
Overall Rating
/5
20 Reviews
Verified Buyer
AAM 11.5" Banks Textured Black Diff Cover - Order # 1334035
Drew W (Georgia) | March 25th, 2021
Very high quality machine work, fit, & finish. Definitely a good heat sync and the fluid level sight glass is a great feature. I still do not understand the point of the drain plug on the Banks cover when the AAM 11.5" axle already has a 3/8" drive magnetic drain plug on the very bottom of the housing which is at a lower fluid level than the one made into the Banks cover. 4 out of 5 starts for redundant drain plug. Order # 1334035
Rear Diff Cover
Gregory H. (California) | March 20th, 2021
Easy to install. The o ring type gasket was a little long but I was able to massage it into the groove.
It's nice being able to see the level and condition of the fluid.
Overall I feel it was worth the cost.
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Frequently Asked Questions
What is the torque spec for the diff cover bolts?
Apply a small amount of thread locker and torque the bolts to 12 lb/ft.
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Specifications
ID
50296
Manufacturer Name
Banks Power
Shipping Weight
12.00 lb.
Shipping Length
14 in.
Shipping Width
4 in.
Shipping Height
15 in.
Fuel Type
Diesel / Gas
Axle Type
AAM 11.5"
Position
Rear
Manufacturer Warranty*
Limited Lifetime
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
L0.00R0
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