Sale

Drivetrain› Differentials and Rear-End Components

Spartan

Locker 9310 Steel Spring and Pin Design

$399.95 $391.44 Save $8.51

SKU: Y-SLD44-30

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

It features a revolutionary spring and pin design for simplified installation and is constructed from 9310 steel for enhanced strength. This locker provides reliable, 100% lockup traction at a low cost.
Show original supplier description
The Spartan Locker, by USA Standard Gear, offers a cost-effective solution for improved vehicle traction. This mechanical locker is engineered to replace the spiders within a standard open case differential, providing a reliable 100% lockup. Its innovative spring and pin design simplifies installation, eliminating the need for thrust washers. Constructed from durable 9310 steel, the Spartan Locker is built for added strength and longevity. It is designed to fit Dana Spicer 44 axles with 30 spline axles. Importantly, this locker will not work in a posi carrier and does not fit the Jeep JK Wrangler Dana 44 rear axle. Each Spartan Locker is backed by a one-year warranty against manufacturing defects, ensuring peace of mind with your purchase. Ensure your differential is a standard open case type and not a posi carrier for proper compatibility.

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

BrandSpartan
Part NumberY-SLD44-30
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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