Drivetrain› Differentials and Rear-End Components

USA Standard Gear

Differential Master Overhaul Kit

$403.99

SKU: ZK T100-SPC

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

Moderate — 2–4 hours

Overview

The USA Standard Gear ZK T100-SPC is a master overhaul kit for differentials. This comprehensive kit provides all the necessary components for a quick rebuild. It is designed using state-of-the-art software and utilizes Koyo bearings.
Show original supplier description
The USA Standard Gear Master Overhaul Kit (ZK T100-SPC) is engineered for differential rebuilds, specifically for Toyota T100 and Tacoma models with the 8.4-inch rear axle. This kit includes Koyo bearings and races, carrier bearings and races, a pinion seal, and a complete shim kit. While most kits from USA Standard Gear utilize Timken bearings, this specific model features Koyo bearings, known for their long life and strength. The components are developed using state-of-the-art design software to ensure precise fitment and performance. The ZK T100-SPC is compatible with Toyota T100 and Tacoma vehicles. Fitment details indicate compatibility for Toyota T100 models from 1995-2015 and Toyota Tacoma models from 2000-2006. It is also noted for compatibility with Toyota Tundra models and Toyota Sequoia from 2001-2007.

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 NumberZK T100-SPC
CategoryDrivetrain
5,000+ Trusted brands
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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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