Spicer 10015183 SAE-4340 Chromoly Front Outer Stub Axle Shaft (Jeep Wrangler JK, 32-Spline, 1350 Series)

Fortify your front-end drivetrain against trail failure, accommodate oversized tires with total peace of mind, and maximize your 4x4 articulation with this genuine Spicer Performance SAE-4340 Chromoly Front Outer Stub Axle Shaft. Custom-engineered by Dana as an elite tier-one upgrade, this high-tensile outer stub shaft (Part Number: 10015183) provides the brute metallurgical strength needed to withstand extreme rock crawling, desert racing, and intense off-road trail wheeling.

On modified four-wheel-drive vehicles, the front outer stub axle shaft bears the brunt of steering changes and torque transfer simultaneously. Standard factory axle stubs are manufactured from basic carbon steel and utilize small u-joints held by weak clips. When subjected to high traction spikes—such as climbing steep obstacles with large 35-inch or 37-inch tires—factory shafts easily snap at the yoke ears or strip their splines. A snapped axle stub will leave you stranded on the trail, can damage your wheel hubs, and can ruin your internal differential lockers. Swapping out your vulnerable stock stubs for this authentic Spicer nickel chromoly forged shaft ensures your rig is built to handle heavy technical wheeling.

Manufactured from premium SAE-4340 nickel chromoly steel, this outer stub shaft undergoes a rigorous, state-of-the-art heat-treatment process to achieve an exceptionally dense core hardness. This specific metallurgical composition delivers unparalleled torsional fatigue resistance and high-impact strength. Engineered for serious performance, this shaft features an upgraded 32 outboard spline pattern and is specifically precision-machined to accept heavy-duty 1350 Series universal joints using secure full-circle snap rings. Full-circle clips prevent the bearing caps from spinning or ejecting under load, resolving the number one cause of aftermarket u-joint failure.

Component Highlights:

• SAE-4340 Nickel Chromoly Forging: Offers drastically higher yield strength and abrasion resistance than standard factory axle shafts, preventing twisted splines or sheared yokes under sudden acceleration.

• 1350 Series Universal Joint Ready: Machined to accept larger, high-torque 1350 series u-joints (1.188-inch cap diameter) for a massive durability boost over stock 1310-series systems.

• Full-Circle Snap Ring Provisions: Engineered to support full-circle retention clips, ensuring your universal joint bearing caps remain locked into position during intense trail binding.

• Ultrasonically Non-Destructive Tested: Every performance shaft is ultrasonically screened for sub-surface internal cracks and structural voids that standard magnetic particle testing can miss.

Axle & Dimensional Specifications:

• Axle Placement Location: Front Axle Outer Stub Shaft (Fits Left-Hand or Right-Hand Side).

• Material Composition: Forged SAE-4340 Nickel Chromoly Steel.

• Outboard Spline Count: 32 Spline.

• Axle Stub Shaft Length: 6.330 inches (160.78 mm).

• Compatible Universal Joint Series: 1350 Series (Designed for Spicer 5-7166X or SPL30-7166XC u-joints).

• Thread Fitting Size: M24 x 2.00.

• Note: Does not include universal joint, wheel hub assembly, tone ring, or outer axle nut.

Vehicle & Housing Application Guide:

• Jeep Wrangler JK / JKU: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, and 2018 4x4 models.

• Differential Fitment: Fits factory front Dana 30, Dana 44 (including Rubicon trims), and Ultimate Dana 44 performance crate front axles.