Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

AAM 9.25" Front Differential Ball Joint Kit

$294.89

SKU: YSPBJ-020HDK2

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Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Yukon Ball Joint Kit is a replacement component for AAM 9.25” front differentials. This kit includes two upper and two lower ball joints along with associated small parts. The housing is constructed from CNC-machined forged SAE 1045 carbon alloy steel, and the ball stud is made from hot-forged, induction heat-treated 4140 chromoly. It features extrusion rolled threads for increased strength and comes with a lifetime warranty against manufacturing defects.
Show original supplier description
The Yukon Ball Joint Kit is designed as a direct replacement for AAM 9.25” front differentials, providing essential components for your vehicle's suspension system. This comprehensive kit includes two upper and two lower ball joints, along with all necessary small parts for a complete installation. Constructed for durability and longevity, the kit features a CNC-machined forged SAE 1045 carbon alloy steel housing. This material choice contributes to extended joint life under demanding conditions. The ball stud is engineered from hot-forged, induction heat-treated 4140 chromoly, offering exceptional strength and resistance to wear. Furthermore, the ball joints incorporate extrusion rolled threads, which are significantly stronger than traditional cut-thread construction, ensuring a more robust connection. This kit is backed by a lifetime warranty against manufacturing defects, reflecting Yukon Gear and Axle's commitment to quality. Owners should note that a break-in period of 300 to 500 miles may be experienced, during which memory steer might occur as the components settle in.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandZumbrota Drivetrain
Part NumberYSPBJ-020HDK2
CategoryDrivetrain
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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