1978 PONTIAC FIREBIRD Differential & Rear-End Components

Differential Carrier Cases, Extreme Heavy Duty, GM 8.5 in., 28/30 Spline, 2.73 and Up Ratio, Each

Part Number: YGA-20084

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Estimated Ship Date: Oct 15, 2025 if ordered today

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Ring and Pinion Gear Installation Kit, Minimum Installation Kit, 30 Spline, GM 8.5 in., Kit

Part Number: YGA-12055

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Oct 15, 2025 if ordered today

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Gear, Ring and Pinion, 3.08:1 Ratio, GM, 7.5 in., Set

Part Number: MGR-GM75-308

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Oct 6, 2025 if ordered today

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Ring and Pinion-GM 8.5/8.625

Part Number: MGR-GM10-373A

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Ring and Pinion Gear Installation Kit, Bearing Overhaul, 30 Spline, GM 8.5 in., Kit

Part Number: YGA-11067

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Estimated Ship Date: Oct 15, 2025 if ordered today

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Clutch guide for GM 7.5" & 7.6" Yukon Dura Grip

Part Number: YGA-33251

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Estimated Ship Date: Oct 14, 2025 if ordered today

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Ring & Pinion Gear Set GM 10 Bolt 8.5" / 3.42 Ratio

Part Number: SVL-2020642

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Spool, Full Size, Steel, 28-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: RMG-81-1028-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 6, 2025 if ordered today

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USA Standard Master Overhaul kit for the '81 & older GM 7.5" differential

Part Number: SPZ-37048

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Estimated Ship Date: Sep 30, 2025 if ordered today

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MASTER SHIM KIT GM 8.2 EARLY CAR

Part Number: MGR-GM10MCSK

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Differential Inner Gear Kit; GM 7.5/7.6 - 26 Spline, Dura Grip Positraction

Part Number: SVL-10003707

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Crosspin Shaft, Steel, Each

Part Number: YGA-33404

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Estimated Ship Date: Oct 16, 2025 if ordered today

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Ring and Pinion, Installation Kit, GM, 8.5 in., Kit

Part Number: SPZ-58011

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Estimated Ship Date: Sep 30, 2025 if ordered today

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WASHER PIN 8.5 GM 10 BOLT

Part Number: MGR-3984818

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Ring and Pinion Installation Kit, Super Kit, GM, 8.5 in., Kit

Part Number: MGR-R10RSK

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 6, 2025 if ordered today

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Axle Shaft Retainer

Part Number: MGR-3833322

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Ring Gear Spacer, GM 7.5 in. Ring Gear, Hardware Included, Each

Part Number: MGR-075050

4.06 out of 5 stars ( 17 )

Estimated Ship Date: Oct 6, 2025 if ordered today

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Differential Spool Bearing Kit; Fits GM 8.5 in. 10 Bolt; Incl. Bearings/Bearing Races

Part Number: RMG-29-0013-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 6, 2025 if ordered today

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Thrust Washer, Open Differential, GM 7.5 in./7.6 in., Each

Part Number: YGA-33390

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

RING GEAR BOLT EACH

Part Number: MGR-PB179-2-L

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Differential Ring Gear Spacer, Ring Gear Spacer

Part Number: MGR-085050C

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Thrust Washer, Open Differential, GM 8.5 in., Each

Part Number: YGA-33304

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 15, 2025 if ordered today

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Pinion Shaft, CROSS PIN-GM 10 BOLT 8.5" - 93

Part Number: RMG-XL-5640

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Estimated Ship Date: Oct 6, 2025 if ordered today

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Differential Ring And Pinion Set

Part Number: RNB-697-300

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Estimated Ship Date: Tomorrow

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Ring and Pinion Installation Kit, GM, 8.5 in., 10-Bolt, Kit

Part Number: RNB-697-100

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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