1978 CHEVROLET P20 Differential & Rear-End Components

Ring and Pinion Installation Kit, GM 8.875 in., Truck 12-Bolt, 30-Spline Pinion, Kit

Part Number: RMG-8310181

3.64 out of 5 stars ( 14 )

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Gear, Ring and Pinion, EXCel, 3.73:1 Ratio, GM, 8.875 in., 12-Bolt Truck, Set

Part Number: RMG-12BT373

4.29 out of 5 stars ( 7 )

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Ring and Pinion Installation Kit, Super Kit, GM, 8.875 in., Kit

Part Number: MGR-R12RSKT

4.14 out of 5 stars ( 7 )

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

Part Number: MGR-R10RMKT

4.5 out of 5 stars ( 16 )

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Ring and Pinion Installation Kit, Master Kit, GM, 8.875 in., 30-Spline Pinion, Truck, Kit

Part Number: MGR-R12RMKT

4.5 out of 5 stars ( 10 )

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Differential Parts Kit; Open Differential Internal Kit; Incl. Side And Pinion Gears/Washers/Pinion Shaft And L

Part Number: MGR-GM12BI

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Ring and Pinion Installation Kit, Master Kit, GM, 8.875 in., 30-Spline Pinion, Truck, Kit

Part Number: MGR-R12RMK

5.0 out of 5 stars ( 1 )

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Ring and Pinion Installation Kit, GM, 8.875 in., Truck, 12-Bolt, Kit

Part Number: RMG-831018M

4.5 out of 5 stars ( 12 )

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Spool, Mini, Steel, 30-Spline, 12-Bolt, GM 8.875 in., Each

Part Number: MGR-MS12C

3.38 out of 5 stars ( 8 )

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Spool, Mini, Steel, 30-Spline, 12-Bolt, GM 8.875 in., Each

Part Number: RMG-78-1230-1

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Estimated Ship Date: Oct 7, 2025 if ordered today

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Ring and Pinion Installation Kit, Super Kit, GM, 8.875 in., Kit

Part Number: MGR-R12RSK

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Ring and Pinion-GM 8.875

Part Number: MGR-GM12-373A

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Estimated Ship Date: Oct 8, 2025 if ordered today

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Axle, Direct Fit, Rear, 1541 Carbon Steel, 30-Spline, Chevrolet, GMC, Each

Part Number: MGR-MG1775

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Estimated Ship Date: Oct 7, 2025 if ordered today

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Axle Shaft, OEM Replacement, 1541H Alloy Steel, 30-spline Inner, 37.563 in. Length, Each

Part Number: MGR-MG1774

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Estimated Ship Date: Oct 9, 2025 if ordered today

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Differential Carrier Gear Kit

Part Number: RMG-XL-4058

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Estimated Ship Date: Oct 7, 2025 if ordered today

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Ring and Pinion Kit

Part Number: RMG-XL-1018-1

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Estimated Ship Date: Oct 7, 2025 if ordered today

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Ring and Pinion-GM 8.875

Part Number: MGR-GM12-456A

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Estimated Ship Date: Oct 8, 2025 if ordered today

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COUPLER

Part Number: PWT-5201001CJR

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Ring and Pinion-GM 8.875

Part Number: MGR-GM12-411A

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Ring and Pinion Installation Kit, Basic, GM 8.875 in. 12-Bolt, Rear, Kit

Part Number: MGR-R12R

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 10, 2025 if ordered today

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Ring and Pinion Installation Kit, Basic, GM 8.875 in. 12-Bolt, Rear, Kit

Part Number: MGR-R12RT

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Estimated Ship Date: Oct 10, 2025 if ordered today

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