Product images and videos 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.

Sale

Drivetrain› Differentials and Rear-End Components

USA Standard Gear

Spartan Locker Dana 30 27 Spline

Name: Spartan Locker Dana 30 27 Spline
Brand: USA Standard Gear
SKU: SL D30JL-27

$686.28 $641.89 Save $44.39

SKU: SL D30JL-27

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The USA Standard Gear Spartan Locker is a lunchbox locker designed for Dana 30/M186 differentials with 27 spline axles. It provides 100% lockup traction at a low cost. The design does not use thrust washers and features a spring and pin system for easier installation.

Show original supplier description

The USA Standard Gear Spartan Locker is a lunchbox locker engineered to deliver reliable, 100% lockup traction for your Dana 30/M186 differential. This unit is designed specifically for 27 spline axles and offers a cost-effective solution for enhanced off-road capability. Featuring a revolutionary spring and pin design, the Spartan Locker simplifies installation by eliminating the need for thrust washers. This makes it a suitable option for both general installers and do-it-yourself consumers looking to upgrade their vehicle's drivetrain. USA Standard Gear is known for providing dependable OE replacement and drivetrain components. This locker is designed for the Dana 30 (M186) front differentials and is compatible with 27 spline axles. While specific vehicle fitment details should always be verified, it is commonly found in 2018+ Jeep Wrangler JL models.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	USA Standard Gear
Part Number	SL D30JL-27
Category	Drivetrain

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy