Drivetrain› Differentials and Rear-End Components

Eaton

Eaton Posi Differential 17 Spline 3.90 & Down Ring Gear Pinion Ratio Rear 8.2in

$775.99

SKU: E00K 19686-010

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 19686-010

The Eaton Posi limited-slip differential is the perfect way to control traction in street rods, light duty pickups and all types of tarmac running race cars. Featuring pyrolytic carbon clutches, rebuildable design, net-forged gears for added strength and seamless, automatic operation.

Eaton Posi (R) Differential | 17 Spline | 1.197 in. Axle Shaft Diameter | 3.90 And Down Ring Gear Pinion Ratio | Rear 8.2 in.

MIA's Description

The Eaton Posi Limited Slip Differential (LSD) with catalog number 19686-010 is designed for GM 8.5 inch 3rd member axles. It features a 17-spline count and is compatible with ring gear ratios of 3.90 and down. This differential is suitable for various applications including off-road light trail/sand sports, drag racing, street and muscle cars, restoration projects, and work truck/towing. Factory housings containing open differentials may require relief grinding for installation.

Fitment

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Specifications

BrandEaton
Part NumberE00K 19686-010

Buy with Confidence

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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