CHEVROLET BISCAYNE Differential Carriers - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

Eaton Detroit Truetrac 28 Spline Differential GM 8.5 Inch 912A556

Differential, Eaton Detroit Truetrac, 28-Spline, GM, 8.5 in., Rear, Each

Part Number: ETN-912A556

4.84 out of 5 stars ( 31 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Summit Racing™ Positraction 28 Spline Differential Carriers GM 8.2 Inch SUM-730962

Differential Carrier, Positraction, Nodular Iron, GM 8.2 in., 28 Spline, 3.08 Up Ratio, Each

Part Number: SUM-730962

4.57 out of 5 stars ( 7 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Detroit Truetrac 30 Spline Differential GM 8.875 Inch (12-bolt) 913A555

Differential, Eaton Detroit Truetrac, Limited Slip, 30-Spline, GM, 8.875 in., 12-Bolt, Each

Part Number: ETN-913A555

4.73 out of 5 stars ( 15 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.875 Inch (12-bolt) YDGGM12P-3-30-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.875 in., 30 Spline, 3.08 to 3.90 Ratio, Each

Part Number: YGA-26011

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.2 Inch YDGGM8.2-3-28-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.2 in., 28 Spline, 3.08 Up Ratio, Each

Part Number: YGA-26021

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Posi Performance 30 Spline Differential GM 8.875 Inch (12-bolt) 19554-010

Differential, Posi Performance, Limited Slip, 30-Spline, GM, 12-Bolt, 3 Series, Each

Part Number: ETN-19554-010

4.68 out of 5 stars ( 22 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Posi Performance 28 Spline Differential GM 8.2 Inch 19603-010

Differential, Posi Performance, Limited Slip, 28-Spline, GM, 8.2 in., Each

Part Number: ETN-19603-010

4.92 out of 5 stars ( 12 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Posi Performance 28 Spline Differential GM 8.5 Inch 19557-010

Differential, Posi Performance, Limited Slip, 28-Spline, GM, 8.5 in., 3 Series, Each

Part Number: ETN-19557-010

4.73 out of 5 stars ( 15 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Posi Performance 30 Spline Differential GM 8.875 Inch (12-bolt) 19555-010

Differential, Posi Performance, Limited Slip, 30-Spline, GM, 12-Bolt, 4 Series, Each

Part Number: ETN-19555-010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Detroit Truetrac 33 Spline Differential GM 8.875 Inch (12-bolt) 914A576

Differential, Eaton Detroit Truetrac, 33-Spline, GM 8.875 in., Each

Part Number: ETN-914A576

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Yukon Gear & Axle Dura Grip Positraction Carriers GM 55P (8.2 Inch Drop out) YDGGM55P-17-1

Differential, Dura Grip, 17-Spline, GM 55P Dropout, Each

Part Number: YGA-26056

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Powertrax Lock-Right Lockers GM 8.5 Inch 1920-LR

Differential, Lock-Right, Locker, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-1920-LR

4.71 out of 5 stars ( 14 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Summit Racing™ Positraction 33 Spline Differential Carriers GM 8.875 Inch (12-bolt) SUM-730948

Differential Carrier, Positraction, Nodular Iron, GM 8.75 in., 33 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730948

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Powertrax No-Slip Traction Systems GM 8.5 Inch 9207852805

Differential, No-Slip Traction System, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-9207852805

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Powertrax Lock-Right Lockers GM 8.2 Inch 1940-LR

Differential, Lock-Right, Locker, 28-Spline, GM, 8.2 in., Each

Part Number: PWT-1940-LR

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

USA Standard Gear Spartan Lockers GM 8.875 Inch (12-bolt), truck SL GM12-30

Differential Carrier, Spartan Locker, 30-spline, Steel, Rear, GM 8.875 in., Each

Part Number: SPZ-17032

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Summit Racing™ Positraction 30 Spline Differential Carriers GM 8.875 Inch (12-bolt) SUM-730946

Differential Carrier, Positraction, Nodular Iron, GM 8.875 in., 30 Spline, 3.08 to 3.90 Ratio, Each

Part Number: SUM-730946

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Posi Performance 17 Spline Differential GM 55P (8.2 Inch Drop out) 19686-010

Differential, Posi Performance, Limited Slip, 17-Spline, GM, 8.2 in., Each

Part Number: ETN-19686-010

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.875 Inch (12-bolt) YDGGM12P-4-30-1

Differential Carrier, Dura Grip Positraction, Clutch-type, 30-spline, Rear, GM 8.875 in. (12-bolt) Passenger Car, Each

Part Number: YGA-26013

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Eaton Detroit Lockers GM 8.5 Inch 187C149A

Differential, Eaton Detroit Locker, 28-Spline, GM, 8.5 in., 3-Series, Each

Part Number: ETN-187C149A

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.875 Inch (12-bolt) YDGGM12P-3-33-1

Dura Grip Positraction Carrier, Traction-Loc, GM 8.75 in., 33 Spline, 3.08 to 3.90 Ratio, Each

Part Number: YGA-26012

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 16, 2026 if ordered today

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Estimated Ship Date: Feb 16, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Positraction 33 Spline Differential Carriers GM 8.875 Inch (12-bolt) SUM-730948

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Powertrax Grip LS Traction Systems GM 8.5 Inch LS201028

Differential, Grip LS Traction System, 28-Spline, GM, 8.5 in., Each

Part Number: PWT-LS201028

Not Yet Reviewed

Estimated Ship Date: Monday 1/19/2026

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Estimated Ship Date: Monday 1/19/2026

Powertrax Grip Pro Traction Systems GM 8.5 Inch GT201028

Differential, Grip Pro Traction System, 28-Spline, GM 8.5 in., Each

Part Number: PWT-GT201028

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Yukon Gear & Axle 30/33 Spline Differential Carrier Cases GM 8.875 Inch (12-bolt) YC GM12P-DG-4

GM 12P DURA GRIP case, bare, 4.10 & up, 30spline & 33spline

Part Number: YGA-20105

Not Yet Reviewed

Estimated Ship Date: Feb 17, 2026 if ordered today

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Estimated Ship Date: Feb 17, 2026 if ordered today

Auburn Gear Select-A-Loc 30 Spline Differential GM 8.875 Inch (12-bolt) 545008

Auburn Gear Select-A-Loc 30 Spline Differential GM 8.875 Inch (12-bolt) 545008

Differential, Auburn, Locker, 30-Spline, GM, 8.875 in., 12-Bolt, Each

Part Number: AUB-545008

Not Yet Reviewed

Estimated Ship Date: Feb 25, 2026 if ordered today

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Estimated Ship Date: Feb 25, 2026 if ordered today