Atlas gear-driven transfer cases are the ultimate in gearing and strength. With over 30,000 units sold, the Atlas transfer case is the solution for combining on- and off-road performance. At Advance Adapters, you can get a built-to-order Atlas JK transfer case and make your Wrangler ready for adventure.
The Atlas name is legendary and synonymous with rock crawling and off-road vehicle performance. Since they were introduced in 1995, Atlas transfer cases have won over the industry for their superior performance, bulletproof design and ability to get you anywhere you want to go. This Jeep transfer case is sure to change the way your vehicle performs off-road. You will benefit greatly by understanding the Atlas characteristics and how to apply them for better performance.
Our Jeep JK transfer case builders let you choose everything about your new unit, including the gear ratio and yokes. After placing your order, you will be contacted by one of our technical specialists to nail down the specifics before the transfer case leaves the building. Shop online with confidence knowing you will get the correct transfer case, accessories and support to make your Jeep JK transfer case installation a positive experience.
2-Speed Applications:
- Can be used on the 2007-18 Jeep JK Wrangler.
- Options for automatic or manual transmissions.
- Included: Transfer case, site tube, cable shifters, yokes, electronics, warranty, installation instructions and gear oil
- NOTE: Driveshaft modifications are required.
Specifications:
- Gears: Helical cut
- Case: 356-T6 heat-treated aluminum
- Weight: 110 lb. (dry)
- Bearings: Needle and taper rollers
- Lubrication: 2 quarts (1.9 liters)
- Dimensions:
- 1310 CV: 13.842 inches
- Flange 1300: 12.224 inches
- 1350 CV: 14.027 inches
Gearing Options Available:
- High range: 1:1
- Low range: 3.0:1, 3.8:1, 4.3:1 or 5.0:1
Atlas T-Case Features:
- Universal case with a right or left drop
- Bulletproof design
- Fully synchronized
- Shift-on-the-fly capability
- Cable shifters with twin stick
- 2WD and 4WD high
- 2WD low (rear axle) - not available on a stock NP241 T/C
- 2WD low (front axle, allows front dig) - a feature not available on a stock NP241 T/C
- 4WD low
Available Options:
- Two-speed installation kit which includes two quarts of oil (part #X11320)
- Four-speed installation kit which includes three quarts of oil (part #X11324)
4-Speed Applications:
- Can be used on the 2007-18 Jeep JK Wrangler.
- Manual transmission - all years; automatic transmission - 2007-11 only
- Included: Transfer case, site tube, cable shifters, yokes, electronics, warranty, installation instructions and gear oil
- NOTE: Driveshaft modifications are required.
Specifications:
- Gears: Helical cut
- Case: 356-T6 heat-treated aluminum
- Weight: 130 lb. (dry)
- Bearings: Needle and taper rollers
- Lubrication: 2.5 quarts (2.4 liters)
- Dimensions: 18.8 inches (1310 CV)
Gearing Options Available:
- High range: 1:1
- Low range: 1.5:1, 2.72:1 and 4.08:1
- Low range: 2.0:1, 2.72:1 and 5:44:1
- Low range: 3.0:1, 2.72:1 and 8.16:1
- Low range: 3.8:1, 2.72:1 and 10.34:1
- Low range: 4.3:1, 2.72:1 and 11.70:1
Features:
- Universal case with a right or left drop
- Bulletproof design
- Fully synchronized
- Shift-on-the-fly capability
- Cable shifters with twin stick
- 2WD and 4WD high
- 2WD low (rear axle) - not available on a stock NP241 T/C
- 2WD low (front axle, allows front dig) - a feature not available on a stock NP241 T/C
- 4WD low
- The planetary gear set enables three unique low modes
Available Options:
- Aluminum shift knobs
- Installation kit which includes three quarts of oil (part #X11324)
See the Specifications tab for more info on the Atlas and click here for Jeep JK input spline information.
Vehicle Applications and Installation Information:
Frequently Asked Questions
What does the transfer case do in a Jeep?
The transfer case distributes power to the front and rear axles while ensuring both rotate at the same speed in 4WD mode. Some transfer cases, including the Atlas 2 and Atlas 4, also have one or more low-range gear sets to change torque delivery.
How do I know if my Jeep transfer case is bad?
Common signs of a faulty transfer case include:
- Puddles of gear oil underneath the vehicle.
- Unusual sounds like grinding and chattering.
- Problems shifting gears or getting stuck in certain gears.
- Smoke or a burning smell.
- A 4WD dash warning light.
What happens when a transfer case goes bad?
If your transfer case fails, it can cause performance issues such as difficulty switching between 2WD and 4WD, uneven power delivery that hurts traction and unexpectedly popping out of gear.
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