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Drivetrain› Differentials and Rear-End Components

Eaton Detroit

Tru-Track Helical Gear Differential, 32 Spline

$1,459.35 $823.99 Save $635.36

SKU: 912A686

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 performs like a limited-slip unit under normal driving conditions, automatically transferring torque to the wheel with better traction when needed. This replacement unit fits GM 8.6 in. IRS/ 218mm, AAM axles.
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This helical-gear style, limited-slip differential offers a significant upgrade for vehicles used in diverse conditions, including street driving, restoration projects, work truck/towing, light trail, sand sports, extreme off-roading, and rock crawling. Key specifications for this differential include a 32-spline gear tooth count and compatibility with 3.45 and 3.73 ring gear ratios. The GM 8.6-inch (218mm) application is specifically noted, with mention of its suitability for the 5th Gen Camaro. The differential type is explicitly listed as Limited Slip (LSD). It enhances stability, particularly when towing, and improves off-road traction and handling. Its internal helical gearing provides smooth, quiet operation without the abrupt engagement of some other traction-enhancing devices.

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

BrandEaton Detroit
Part Number912A686
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(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.

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