Sale

USA Standard Gear

Spider Gear Kit, 30-Spline

$156.10 $145.89 Save $10.21

SKU: ZIKGM12-S-30

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The USA Standard Gear spider gear kit is a direct replacement component for GM 12-bolt open differentials found in passenger cars and trucks. This kit is engineered to work with 30-spline axles, ensuring proper fit and function within the differential assembly. The comprehensive kit includes all necessary parts for a complete repair or upgrade, featuring two side gears, two pinion gears, a cross pin shaft, a cross pin bolt, and spider gear thrust washers. This USA Standard Gear kit is designed to restore the functionality of your GM 12-bolt differential. It is specifically intended for open differential configurations and requires 30-spline axles for installation. The kit contains essential components including side gears, pinion gears, the cross pin shaft, its bolt, and thrust washers to ensure a complete and reliable repair.

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

BrandUSA Standard Gear
Part NumberZIKGM12-S-30
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.

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