1979 PONTIAC FIREBIRD Differential & Rear-End Components

Differential Carrier Bearings, Steel, GM 8.5 in., Kit

Part Number: YGA-57009

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 2.73:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-GM10-273

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Differential Shims, Carrier, Steel, Kit

Part Number: MGR-SS10

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 9/8/2025

Gear, Ring and Pinion, 4.30:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-430

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 3.73:1 Ratio, 1.438 in. Pinion, 27 Spline, 7.500 in. Ring Gear, GM 7.5/7.6 in., Set

Part Number: YGA-24146

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885456

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Differential Carrier Rebuild Kits and Spider Gears, GM 8.5 in., Side Gears, 28-spline, 10-bolt, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: SPZ-39026

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 4.10:1 Ratio, GM, 7.5 in./7.625 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6903221

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Crush Sleeve Eliminator Kit, Steel Spacer, Pinion Shims, GM 7.5 in., GM 7.6 in., GM 8.2 in., Kit

Part Number: YGA-55047

4.29 out of 5 stars ( 7 )

Estimated Ship Date: Monday 9/8/2025

Gear, Ring and Pinion, EXCel, 4.10:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75410OE

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 4.56:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, Set

Part Number: MGR-GM10-456

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Axle Assemblies, Ford 9 in., Satin Black, 61.25 in. Flange to Flange, 31-Spline Axles, 1541H Alloy, Chevy, Pontiac, Kit

Part Number: ART-11179682

Not Yet Reviewed

Estimated Ship Date: Sep 22, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Ring and Pinion Installation Kit, Master Kit, GM, 8.5 in., 30-Spline Pinion, Kit

Part Number: MGR-R10REMKT

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Differential Cover, Steel, Chrome, GM, 8.5 in., 10-Bolt, Kit

Part Number: MRG-9891

4.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/8/2025

Axle, Direct Fit, C-Clip, Rear, 1541H Steel, 30-Spline, GM F-Body, A-Body, 8.5 in., Each

Part Number: MSR-A103003-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Differential Ring and Pinion; GM 8.5 10 Bolt - 3.73 Ratio

Part Number: SVL-2023695

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Mini Spool, Steel, 28-Spline, GM 8.5 in., Each

Part Number: MGR-MS10-28

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Ring and Pinion Installation Kit, EXCel, GM, 8.5 in., 10-Bolt, 30 Spline Pinion, Koyo Bearings, Kit

Part Number: RMG-XL-1021-1

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/8/2025

Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 30.125 in. Length, Each

Part Number: MGR-MG1015

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, EXCel, 4.56:1 Ratio, GM, 7.5/7.625 in., 10-Bolt, Set

Part Number: RMG-GM75456

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 4.88:1 Ratio, GM, 8.5/8.6 in., 10-Bolt, 3 Series, Set

Part Number: RMG-6901691

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Gear, Ring and Pinion, 4.30:1 Ratio, GM, 8.5/8.6 in., Set

Part Number: MGR-G885430

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping

Ring Gear Bolt, Hex Head, 7/16-20 in. Thread Size, Steel, Black, Each

Part Number: YGA-33049

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/8/2025

Pinion Shims, Steel, Kit

Part Number: YGA-55009

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 9/8/2025

Axle Shaft, OEM Replacement, 28-Spline, 30.125 in. Length, Chevy, GMC, Pontiac, 8.2 in., Rear, Each

Part Number: RMG-92-25114

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 9/8/2025

• Free Shipping