Eaton Detroit Truetrac Differential 30 Spline 1.32in Axle Shaft Dia 2.73 & Up Ratio Rear 8.5in/8.6in

All Eaton differentials made for General Motors 8.5" and 8.6" axles require special bearings. For axles with small bearing bores (race O.D. or 2.89"), 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"), usually found on vehicles from 1999-2013, bearing LM603049 and race LM603012 are required. Manual locking hubs recommended for front axle applications.

2.73 & up

30 EA

1.32 in

8.5 in

Limited Slip (LSD)

Off-Road: Extreme Off-Road
On Road: Circle Track
On Road: Drag Racing
On Road: Street and Muscle
Off-Road: Work Truck / Towing
On Road: Work Truck / Towing
Off-Road: Light Trail / Sand Sports
Off-Road: Rock Crawl
On Road: Restoration

Model year start	Model year end	Vehicle make	Vehicle type (model)	Axle location	Axle description	Gear ratio	Model product notes
2006	2009	Hummer	H1, H2, H3	Rear	H3	2.73 & up
1988	1996	General Motors, Chevrolet, Pontiac, Buick, Oldsmobile	Passenger Car	Rear	GM 10 bolt C-Clip	2.73 & up
1988	2013	General Motors	Three Quarter-Ton Truck	Rear	GM 10 bolt C-Clip	2.73 & up
1988	2007	General Motors	Half-Ton Truck	Rear	GM 10 bolt C-Clip Van	2.73 & up
2005	2007	Saab	9-7x	Rear	8.6	2.73 & up