GMC Differential Carriers - GM 8.5/8.6 in. Differential Case Design Type - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Eaton Detroit Truetrac 30 Spline Differential GM 8.5/8.6 Inch 913A481

Differential, Eaton Detroit Truetrac, Limited Slip, 30-Spline, GM, 8.5/8.6 in., 2.73 & up, Each

Part Number: ETN-913A481

4.85 out of 5 stars ( 136 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.5/8.6 Inch YDGGM8.5-3-30-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.5/8.6 in., 30 Spline, 2.73 Up Ratio, Each

Part Number: YGA-26016

4.25 out of 5 stars ( 36 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Eaton Posi Performance 30 Spline Differential GM 8.5/8.6 Inch 19559-010

Differential, Posi Performance, Limited Slip, 30-Spline, GM, 8.5 in., Truck, 3 Series, Each

Part Number: ETN-19559-010

4.55 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Auburn Gear Grip-N-Loc 28 Spline Differential GM 8.5/8.6 Inch 546018

Auburn Gear Grip-N-Loc 28 Spline Differential GM 8.5/8.6 Inch 546018

Differential, Auburn, Grip-N-Loc, Limited Slip, 28-Spline, GM, 8.5/8.6 in., 2.73 & up, Each

Part Number: AUB-546018

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Auburn Gear Grip-N-Loc 30 Spline Differential GM 8.5/8.6 Inch 546022

Differential, Auburn, Grip-N-Loc, Limited Slip, 30-Spline, GM, 8.5/8.6 in., 2.73 Ratio and up, Each

Part Number: AUB-546022

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Auburn Gear Grip-N-Loc 30 Spline Differential GM 8.5/8.6 Inch 546052

Differential, Auburn, Grip-N-Loc, Limited Slip, 30-Spline, GM, 8.5 in., 8.6 in., Each

Part Number: AUB-546052

Not Yet Reviewed

Estimated Ship Date: Apr 29, 2026 if ordered today

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Estimated Ship Date: Apr 29, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Eaton Posi Performance 30 Spline Differential GM 8.5/8.6 Inch 19559-010

4.5 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/23/2026

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Auburn Gear Grip-N-Loc 28 Spline Differential GM 8.5/8.6 Inch 546050

Differential, Auburn, Grip-N-Loc, Limited Slip, 28-Spline, GM, 8.5 in., 8.6 in., Each

Part Number: AUB-546050

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

Yukon Gear & Axle 28/30 Spline Differential Carrier Cases GM 8.5/8.6 Inch YC GM8.5-DG-3

Yukon Dura Grip case, GM 8.5" & 8.6", 2.73 & up

Part Number: YGA-20107

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today