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2007-2017 Wrangler, Jeep JK, 32/35 Spline ARB Air Locker 147, Nitro Front Axle Upgrade Kit for Dana 44

Price: $1,815.00

Product Code: ARB147AXLEKIT-1

Description Vehicle Applications Warranty Information

Dana 44
ARB Air Locker 147 & Nitro Front Axles
35 Spline Upgrade Axle Kit
With Spicier U-Joints

2007 -2017 Jeep Wrangler JK

Differential: Dana 44 JK
Axle Splines: Inner: 35, Outer: 32
Material: Axles: 4340 Chromoly Steel
Manufacturer: Nitro Gear & Axle / ARB
Warranty: Nitro 5 Years* / ARB 5 Years*

Kit Includes:
1 ARB 147 Air Locker Kit
1 RT Inner Chromoly Axle Shaft, 1.5" Diameter shaft.
1 LT Inner Chromoly Axle Shaft, 1.5" Diameter shaft. br/>2 Outer Chromoly Stub Axles.
2 Spicer U-Joints, Large 1350 size.
2 Pinion Bearings & Races
2 Inner Axle Seals

Additional available axle upgrades:
Nitro Front Axle Tube Sleeves:

Nitro Front Gusset & Skid Kit: NPJKGUSSET-KIT

Tech Note:
**NOTE: Fits Aftermarket Dana 44 front axle housings with “traditional" carrier bearing saddles (Not Rubicon)

Works with:
TF3544200, TF3544204, TF3544251, TF3544252, TF3544253 TF3544044

3.73 & Down Carrier Break
Uses larger diameter 1350 U-Joints (included).
35 Spline is an aftermarket upgrade.

Nitro Gear and Axle Nitro Tough Axles

Nitro 1541H steel and 4340 alloy & chromium and molybdenum alloy axles commonly known as "chromoly":
Our OE replacement axles are made of 1541H steel for a 25-35% increase in strength over their stock counterparts. Nitro 4340 chromoly axles are also heat treated but are designed with extra material for strength where it's needed. All of our axles are precision machined to OE specifications for excellent fitment.

1541H steel is a heat treated, carbon steel with .41% or less of other impurities. The heat treatments make the metal harder, with out making it brittle with a tensile strength of 181,000 psi. Up to 35% stronger than OE axles.

4340 cromoly steel, is a lower carbon steel with a minimum of 10% chromium by weight. Known as a high strength, low carbon steel with a tensile strength of 228,000 psi opposed to OE standard 1040 steel with a tensile strength of 110,000 to 130,000 psi.

That means they take more punishment, to get you further down the trail or off the trail entirely. That's Nitro Tough.

Nitro also offers extra long-splined shafts which can be cut to length and blank shafts for custom spline machining. Each new product is subjected to multi-point inspections and then actually installed and set up by Nitro's own in-house differential professionals to ensure excellent fitment and easy setup. At Nitro we strive to meet demands for new ratios and Fits and we are continually developing new products to stay ahead of the competition.

- CNC precision machining & heat treating processes ensure excellent fitment and overall strength.
- Our heat treatment is applied after the splines are cut which allows for deeper penetration where strength is needed.
- We have a rapid and ever growing range of products to meet new demands and Fits.

Please contact us with your specific questions and inquiries.

Nitro Gear and Axle Premium Differential Ring and Pinion Gears, Axles and parts


This product can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to: www.P65Warnings.ca.gov

  • Nitro Axle Features:
    Chromoly steel is 40-50% stronger than OEM axles

    ARB Features & Benefits:
    5 Year Warranty*
    Provides 100% traction on demand without affecting on road drivability or driveline wear.
    Vastly improved traction means less reliance on momentum, which reduces the likelihood of vehicle damage and environmental impact.
    Easy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver s seat.
    Ultra durable and extremely strong - only the highest quality materials used in construction.
    Incredibly simple yet effective design that employs minimal moving parts, thereby ensuring maximum reliability.
    Thoroughly tested and proven design trusted and used in over 80 countries around the world.
    Front and rear Air Lockers available for most makes and models.
    4WD & 2WD applications.
    Easy installation and maintenance no special tools, skills or additives required.

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