Yukon Gear Front 4340 Chrome-Moly Replacement Axle Kit For Dana 30 (84-01 XJ / 97+ TJ / 87+ YJ

Yukon 4340 Chrome-Moly Front Axle Kit for Dana 30 (YA W24110)

The YA W24110 is Yukon Gear's complete front axle replacement kit for the Dana Spicer 30 differential found in 1984-2001 Jeep Cherokee XJ, 1987-1995 Wrangler YJ, and 1997-2006 Wrangler TJ. Built from premium 4340 chrome-moly steel with cold-roll-formed splines and advanced induction coil heat treating, the YA W24110 delivers substantially greater tensile strength than factory axle shafts, making it the go-to upgrade for anyone pushing the Dana 30 harder than the OEM shafts were designed to handle.

Features and Benefits

• 4340 chrome-moly steel construction for superior tensile strength versus OEM carbon steel shafts
• Cold-roll-formed splines for tighter tolerances and improved fatigue resistance
• Advanced induction coil heat treating for consistent hardness from shaft end to end
• 27-spline inner and outer axle shafts on both driver and passenger sides
• Includes heavy-duty 1310/297X series u-joints for improved articulation
• Includes Yukon Vacuum Disconnect Block-Off Kit with axle seals to eliminate the factory vacuum disconnect
• Kit covers both inner and outer shafts (RH inner 32.36 in., LH inner 16.63 in.)
• Limited lifetime warranty against manufacturing defects
• Assembled and quality-checked in the USA

Vehicle Fitment

Specifications

What's Included

• Right-hand (RH) outer 4340 chrome-moly axle shaft, 27-spline
• Left-hand (LH) outer 4340 chrome-moly axle shaft, 27-spline
• Right-hand (RH) inner axle shaft, 32.36 in., 27-spline
• Left-hand (LH) inner axle shaft, 16.63 in., 27-spline
• 1310/297X Series u-joints (set)
• Yukon Vacuum Disconnect Block-Off Kit with axle seals

Frequently Asked Questions

What is the difference between a Grizzly Locker and a DuraGrip?
The Yukon Grizzly Locker is a full mechanical locking differential that sends 100% of available torque to both driven wheels simultaneously, disengaging automatically during turns. The Yukon DuraGrip is a clutch-pack limited-slip differential (positraction) that biases torque to the wheel with grip while still allowing speed differentiation. The YA W24110 is neither a locker nor an LSD; it is a replacement axle shaft kit designed to address the strength limitations of OEM Dana 30 shafts.

Will the YA W24110 work with aftermarket lockers or limited-slip differentials?
Yes. The YA W24110 shafts feature standard 27-spline ends compatible with all factory and most aftermarket Dana 30 carrier internals, including popular locker and LSD options from Yukon and other manufacturers.

Does the YA W24110 require a break-in period?
No break-in procedure is required for the axle shafts themselves. However, if any new differential internals or u-joints are installed at the same time, follow the respective manufacturer guidelines for those components.

Why upgrade from stock Dana 30 axle shafts?
OEM Dana 30 shafts are manufactured from 1040 to 1050 carbon steel. The YA W24110 uses 4340 chrome-moly steel with cold-roll-formed splines, which significantly increases tensile strength and torsional resistance. This is especially important when running larger tires, lockers, or frequent off-road use where shock loads can snap factory shafts.

Do I need to remove the vacuum disconnect?
The kit includes Yukon's Block-Off Kit specifically to eliminate the factory vacuum disconnect system and seal the axle housing properly. This simplifies the front axle and is strongly recommended when installing upgraded shafts.

Is this kit compatible with ABS-equipped vehicles?
The YA W24110 is designed for Dana 30 front axles in 1984-2001 Cherokee XJ, 1987-1995 Wrangler YJ, and 1997-2006 Wrangler TJ. ABS tone ring compatibility depends on your specific vehicle configuration. Verify your OEM setup before ordering.

What does the Magnuson-Moss Warranty Act mean for my purchase?
Under the Magnuson-Moss Warranty Act, installing this aftermarket part does not void your vehicle's manufacturer warranty unless the vehicle manufacturer can demonstrate that the part caused a specific failure. Yukon backs the YA W24110 with a limited lifetime warranty against manufacturing defects for the original purchaser.

Do I need any special tools for installation?
Installation requires a Dana 30 axle shaft puller or slide hammer, snap ring pliers, a press for u-joints, and standard hand tools. Professional installation is recommended. A front axle rebuild is involved, so a service manual for your specific Jeep model is strongly advised.

Installation Overview

1. Lift and safely support the vehicle; remove the front wheels and brake calipers.
2. Drain the front differential fluid and remove the front differential cover.
3. Remove the front driveshaft and disconnect the axle from the differential.
4. Extract the factory inner and outer axle shafts using a slide hammer or axle shaft puller.
5. Remove the factory u-joints and press in the new 1310/297X series u-joints included with the YA W24110 kit.
6. Install the Yukon Vacuum Disconnect Block-Off Kit with the new axle seals per the included instructions.
7. Insert the new RH and LH inner and outer chrome-moly shafts into the housing.
8. Reinstall the differential cover with new gasket or RTV sealant and refill with the appropriate gear oil.
9. Reinstall the front driveshaft, brake calipers, and wheels; torque all fasteners to spec.
10. Lower the vehicle and perform a brief test drive to check for noise, vibration, or leaks.

California Proposition 65 Warning: This product can expose you to chemicals including arsenic, which is 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.