Jeep JK Axle Shaft - Front + Left - Yukon Gear & Axle - Chromoly, 4340, 27 Spline - `07-`12. This is the Yukon 4340 chrome-moly left-hand replacement inner axle for the Dana 30 front axle on Jeep JK models from 2007–2012. It’s designed for owners upgrading to larger tires or higher power levels who need a stronger front inner axle.

Manufactured from high-tensile 4340 chromoly, this Yukon axle features cold roll formed splines and advanced induction heat treating for consistent strength and durability. The 27-spline design and 18.8" length match Dana 30 JK front inner requirements and it uses the 760X series U-joint. Yukon rates these 4340 axles to provide up to 50% increased strength over many stock shafts, making them suitable for demanding street and off-road use. The axles are covered by Yukon’s Limited Lifetime warranty for manufacturing defects and breakage for as long as you own the vehicle, with a “No Questions Asked” replacement on the first warranty return (warranty terms apply and are not transferable).

Features

• High-tensile 4340 Chrome-Moly construction
• 27 splines, 18.8" length — left inner axle for Dana 30 (Jeep JK front)
• Cold roll formed splines and induction coil heat treating
• Uses 760X series U-joint
• Limited Lifetime warranty covering manufacturing defects and axle breakage

Ready for installation and customization, these axles are a direct-fit replacement when upgrading front axle components on `07–`12 Jeep JKs. If you have questions about fitment, compatibility with aftermarket differentials or installation options, call us directly — we can help match the axle to your build and advise on torque specs and U-joint choices. We have full service and customization shops in Austin, Texas and the Los Angeles, California area where we offer installation and drivetrain work. Call us: 512-982-9393 (TX) or 562-981-6800 (CA).

If you’re considering purchasing multiple items, please contact us for possible shipping discounts. We install on premises at both locations.

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