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Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 3.73 & Up Ratio Rear 8.875in

SKU: EAT19556-010

Differential Carriers

EAT Posi Diffs...

Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 3.73 & Up Ratio Rear 8.875in

SKU: EAT19556-010

Differential Carriers

EAT Posi Diffs...

A$2,058.84
IN STOCK! Est Ship 4-7 days. In stock at 1 location (8 available)

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Description

Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 3.73 & Up Ratio Rear 8.875in

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.

Additional Information

Eaton Posi® Differential; 30 Spline; 1.30 in. Axle Shaft Diameter; 3.73 And Up Ring Gear Pinion Ratio; Rear 8.875 in.;

Data: v4.2 - Upd: 2026-11-11 00:34:29

Features

  • Clutch Type Limited Slip Differential
  • Precision-Forged Gears
  • Prevents Wheel Slip
  • Pyrolytic Carbon Clutch Disc Technology
  • Rebuildable
  • Smooth; Automatic Engagement
  • Tunable via various spring packs [a.k.a. pre-loads]

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-07 20:12:42

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Eaton
StreetFX SKU eat19556-010
SFX Item ID 4500301
Accounting SKU eat-19556-010
Manufacturer SKU 19556-010
Manufacturer UPC N/A
Alternative References ETN-19556-010

Differential, Posi Performance, Limited Slip, 30-Spline, 12-Bolt, 4 Series, Chevy, GMC, Truck, Each

Big torque doesn't have to mean big traction problems. Eaton Posi Performance differentials combine carbon friction discs with precision-forged gears to give you great traction, even under higher torque loads. Plus, the carbon friction discs produce smooth, quiet performance for the life of your vehicle.

Product Attributes
BrandEATON
Manufacturer's Part Number19556-010
Part TypeDifferential Carriers
Product LineEaton Posi Performance Differentials
UPC840379313963
Differential Case Design TypeGM 8.875 in. (12-bolt), truck
RemanufacturedNo
Aftermarket Carrier StyleClutch-type
Cover Bolts12
Carrier Series4
Axle Shaft Spline Quantity30
Manufacturer of AxleGM
Carrier MaterialSteel
Carrier Bearings IncludedNo
QuantitySold individually.
NotesAll Eaton differentials made for General Motors 8.5 in. and 8.6 in. axles require special bearings. For axles with small bearing bores (race O.D. or 2.89 in.) usually found on vehicles prior to 1999, bearing LM102949 and race LM102911 are required. For axles with large bearing bores (race O.D. of 3.06 in.) usually found on vehicles from 1999 to present, bearing LM603049 and race LM603012 are required.

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