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Drivetrain› Differentials and Rear-End Components

Yukon

Standard Open Spider Gear Kit for Ford 8.8" 31 Spline

$263.49 $260.89 Save $2.60

SKU: YPKF8.8-S-31

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Yukon Gear and Axle spider gear kit is a standard open spider gear kit designed for Ford 8.8" differentials with 31 spline axles. This kit features higher quality materials and manufacturing techniques than OEM parts for increased longevity. It includes all necessary components for a complete spider gear set replacement, such as two side gears, two pinion gears, a cross pin shaft, a cross pin bolt, and spider gear thrust washers. The cross pin shaft diameter is 0.875 inches.
Show original supplier description
The Yukon Gear & Axle standard open spider gear kit offers a durable replacement for your Ford 8.8" differential, specifically designed for applications with 31 spline axles. This kit is engineered with superior materials and manufacturing processes compared to OEM components, ensuring a longer service life and reliable performance. The comprehensive kit includes all the essential parts for a complete spider gear set replacement. You will receive two side gears, two pinion gears, the cross pin shaft (with a 0.875" diameter), a cross pin bolt, and the necessary spider gear thrust washers. This ensures a proper and efficient installation. Yukon Gear & Axle prioritizes quality, aiming to provide a more robust and longer-lasting solution than factory parts. This commitment to higher standards means you can expect enhanced durability from this spider gear kit.

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

BrandYukon
Part NumberYPKF8.8-S-31
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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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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