1971 MERCURY COMET Differential & Rear-End Components

Ring and Pinion Gears and Installation Kit, 8.0" FORD 3.80 REAR R&P GEAR/ INSTALL KIT PACKAGE; FITS POSI OR LOCKER w/ 1.781" BEARING JOURNAL

Part Number: YGA-12518

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Mini spool for Ford 9" with 28 spline axles

Part Number: YGA-32056

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Axle Differential Case, Ford 9 in., Aluminum, 3.250 in. Bearing Bore, 33, 35, 40 Spline, Each

Part Number: YGA-32035

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 13, 2025 if ordered today

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Differential Clutch, Steel Pack, Rear, Open, Ford, 9 in., 4-Tab Design, Set

Part Number: YGA-16029

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Axle Differential Case, Ford 9 in., Nodular Iron, 3.062 in. Bearing Bore, 28, 31, 33 Spline, Each

Part Number: YGA-32099

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 13, 2025 if ordered today

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Pinion Nut, Steel, Ford, 9 in., 35-Spline Pinion, Each

Part Number: MGR-PNF935

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Pinion depth shims for Ford 8"

Part Number: YGA-55055

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Gear, Ring and Pinion, EXCel, 4.71:1 Ratio, Ford, 9 in., Set

Part Number: RMG-F9471

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Estimated Ship Date: Sep 29, 2025 if ordered today

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

Part Number: MGR-R9R306S

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Estimated Ship Date: Sep 30, 2025 if ordered today

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Gear, Ring and Pinion, 6.14:1 Ratio, Ford, 9 in., Daytona Bearing, Set

Part Number: MGR-F890614AX

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Estimated Ship Date: Sep 30, 2025 if ordered today

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SPRING 9" POSI 4 REQUIRED

Part Number: MGR-D0AZ4214A

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Pinion depth shims for Ford 9"

Part Number: YGA-55057

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Gear, Ring and Pinion, 6.83:1 Ratio, Ford, 9 in., Daytona Bearing, Set

Part Number: MGR-F890683AX

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Sep 29, 2025 if ordered today

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Differential Carrier Replacement Parts, Pinion Gear Thrust Washer, AM General, AMC, Ford, Hummer, Jeep. Lincoln, Mercury, Each

Part Number: MGR-C9OZ4230A

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Ring & Pinion Gear, 3.80 Ratio, Ford, 8.0 in., Set

Part Number: YGA-24093

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Estimated Ship Date: Oct 13, 2025 if ordered today

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Mini Spool, 31 Spline, Ford 9 in., Each

Part Number: SDH-10015391

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Estimated Ship Date: Oct 9, 2025 if ordered today

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Gear, Ring and Pinion, 4.86:1 Ratio, 1.312 in. Pinion, 28 Spline, 9.000 in. Ring Gear, Ford 9 in., Set

Part Number: YGA-24110

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Gear, Ring and Pinion, 3.80:1 Ratio, Ford, 8 in, Set

Part Number: RMG-4901111

4.25 out of 5 stars ( 4 )

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Gear, Ring and Pinion, 6.00:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F890600

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Estimated Ship Date: Sep 30, 2025 if ordered today

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

Part Number: MGR-R9R

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Estimated Ship Date: Oct 1, 2025 if ordered today

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Spool, Mini, Steel, 28-Spline, 10-Bolt, Ford 8 in., 9 in., Each

Part Number: MGR-MS9-28-4

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 1, 2025 if ordered today

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High performance Yukon Ring & Pinion gear set for Ford 9" in a 5.29 ratio

Part Number: YGA-24387

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USA standard ring & pinion gear set for Ford 8" in a 3.80 ratio.

Part Number: SPZ-36118

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Estimated Ship Date: Sep 29, 2025 if ordered today

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Nodular Housing

Part Number: MGR-26306

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Spring, Differential Carrier Replacement Part, Trac Loc, Ford 8 in., Ford 9 in., Each

Part Number: YGA-33518

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today