USA Standard Gear

9" Ford 4-Pinion Spider Gear Set

$281.89

SKU: ZIKF9-S-31-4

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

Description

The USA Standard Gear standard spider gear set is a direct replacement component designed for Ford 9-inch differentials with 31-spline axles and a 4-pinion configuration. This kit provides all the necessary internal gears for an open differential setup. It includes two side gears, four pinion gears, a cross pin shaft, roll pins, and spider gear thrust washers. The components are manufactured to offer OEM replacement quality. This spider gear set is specifically designed to fit Ford 9-inch axles with 31 spline count and an open differential type. Ensure compatibility with your specific axle assembly before purchase. For fitment questions, USA Standard Gear offers technical support via phone or chat.

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 NumberZIKF9-S-31-4
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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