1978 FORD THUNDERBIRD Differential & Rear-End Components

Differential, Grip LS Traction System, 31-Spline, Ford, 9 in., Each

Part Number: PWT-LS109031

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Differential Carrier Bearings, Standard Replacement, Includes Cup, 1.625 in. Bore, AMC, GM, Mopar, Jeep, International, Studebaker, Hummer, Each

Part Number: TMK-SET69

5.0 out of 5 stars ( 1 )

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Spool, Mini, Steel, 31-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MGR-MS9-31

4.75 out of 5 stars ( 4 )

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Differential, No-Slip Traction System, 28-Spline, Ford, 9 in., Each

Part Number: PWT-92-0690-2800

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Pinion Nut, Steel, 3/4 in.-20 Thread, Each

Part Number: YGA-33154

5.0 out of 5 stars ( 1 )

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Ring and Pinion Gear Installation Kit, Minimum Install, 28-spline, Standard Rotation, Rear, Ford 9 in., Kit

Part Number: YGA-12036

3.0 out of 5 stars ( 1 )

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Third Member Stud, Steel, Black Oxide, Ford 8 in., Ford 9 in., Each

Part Number: YGA-32338

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Bearing, Pinion, 1.312 in. Inside Diameter, Each

Part Number: NTL-M88048

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USA Standard Master Overhaul kit for the Ford 9" LM102910 differential, w/ solid spacer

Part Number: SPZ-37034

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Ring and Pinion Gears, Ford 9 in., 3.50:1 Ratio, 28-spline, Standard Rotation, Ford 9 in., Set

Part Number: SVL-2020496

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Nov 7, 2025 if ordered today

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Pinion gear for 8" and 9" Ford.

Part Number: YGA-16160

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Ring and Pinion Installation Kit, Master, Ford 9 in., Rear, Kit

Part Number: MGR-R9R306SMK

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Differential Inner Gear Kit; Ford 9 - 28 Spline, Positraction

Part Number: SVL-2023888

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Estimated Ship Date: Nov 7, 2025 if ordered today

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Ring and Pinion-Ford 9

Part Number: MGR-F9-543A

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Estimated Ship Date: Nov 13, 2025 if ordered today

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9" FORD 31spl S/G W/ HUB

Part Number: YGA-16161

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Thrust Washer, 0.030 in. Thick, AMC Model 20, Dana 44, Ford, 8 in./9 in., Each

Part Number: YGA-33283

4.0 out of 5 stars ( 1 )

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Gear, Ring and Pinion, 3.75:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F890375

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Estimated Ship Date: Nov 11, 2025 if ordered today

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Ring and Pinion Installation Kit, Basic, Ford 9 in., Rear, Kit

Part Number: MGR-R9RTPK

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Ring & Pinion Gear Set Ford 9" / 3.7 Ratio

Part Number: SVL-2020624

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Nov 7, 2025 if ordered today

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Ring and Pinion Gear Installation Kit, Master Overhaul, 30 Spline, Ford 9 in., Kit

Part Number: YGA-14052

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Ring and Pinion Gears, 4.11:1 Ratio, 28-spline, Standard Ring Gear Rotation, Ford 9 in., Set

Part Number: SPZ-36139

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Ring and Pinion Gears, 5.13:1 Ratio, 10-bolt, 28-spline, Standard Gear Rotation, Ford, 9 in., Set

Part Number: SPZ-36145

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Ring and Pinion-Ford 9

Part Number: MGR-F9-389A

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Ring and Pinion-Ford 9

Part Number: MGR-F9-583A

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Installation Kit, Master Overhaul, Ford 9 in., Kit

Part Number: YGA-14057

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Estimated Ship Date: Nov 24, 2025 if ordered today

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