MERCURY COUGAR Differential & Rear-End Components

Differential, Eaton Detroit Locker, 28-Spline, Ford, 8 in., Each

Part Number: ETN-187S13D

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

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Gear, Ring and Pinion, 3.70:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F890370

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Ring and Pinion Installation Kit, Ford, 9 in., 28-Spline, Open, Kit

Part Number: MGR-F9IKN

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

Ring and Pinion Installation Kit, Ford, 8 in., Kit

Part Number: RAT-334K

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Pinion Bearing, Rear, 1.312 in. i.d., Chrysler, Dodge, Plymouth, Desoto, Ford, Lincoln, Mercury, Studebaker

Part Number: TMK-HM89443

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

Pinion Bearing, 1.187 in. Inside Diameter, Each

Part Number: TMK-M86649

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Gear, Ring and Pinion, 4.11:1 Ratio, 1.625 in. Pinion, 8.800 in. Ring Gear, Ford 8.8 in., Set

Part Number: YGA-24097

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 3.55:1 Ratio, 1.188 in. Pinion, 25 Spline, 8.000 in. Ring Gear, Ford 8 in., Set

Part Number: YGA-24092

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Gear, Ring and Pinion, 4.56:1 Ratio, Ford, 8.8 in., Set

Part Number: MGR-F888456

5.0 out of 5 stars ( 1 )

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Ring and Pinion Installation Kit, Master Kit, Ford 9 in.; 28 Spline; Incl. Bearing Kit Plus Ring Gear Bolts

Part Number: MGR-R9R28MKT

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Ring and Pinion Installation Kit, Ford, 9 in., 31-Spline Axle, 28-Spline Pinion, Kit

Part Number: RMG-8310071

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Gear, Ring and Pinion, EXCel, 3.89:1 Ratio, Ford, 9 in., Set

Part Number: RMG-F9389

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USA Standard Gear standard spider gear set for Ford 9", 31 spline, 4-pinion design

Part Number: SPZ-39018

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Differential Pinion Nut, Steel, Each

Part Number: MGR-379570S

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

Differential Carrier, Positraction, Nodular Iron, Ford 8.8 in., 31 Spline, Each

Part Number: SUM-730944

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Differential, Grip Pro Traction System, 28-Spline, Ford, 9 in., Each

Part Number: PWT-GT109028

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Feb 5, 2026 if ordered today

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• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $794.72

Rebate Expires: 12/31/2025

Get $40 back after rebate on this Powertrax Product! Go to https://www.richmondgear.com/rebate.pdf for details. ...Read More

Get UP TO $55 back after rebate on select Powertrax Products! Go to https://www.richmondgear.com/rebate.pdf for details. Valid on purchases made between 11/1/25 and 12/31/25. Claims must be submitted within 30 days of purchase. Allow 6-8 weeks for processing. Valid in USA and Canada. Limit two qualifying purchases per household or address. This offer cannot be combined with other discounts or offers. Rebate intended for end consumer only. Show Less

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Ring and Pinion Gears, 4.88:1 Ratio, Standard Ring Gear Rotation, Ford 8.8 in., Set

Part Number: MGR-F8-8-488

5.0 out of 5 stars ( 2 )

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Gear, Ring and Pinion, 4.11:1 Ratio, Ford, 8 in., Set

Part Number: MGR-F880411

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 7, 2026 if ordered today

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Gear, Ring and Pinion, 4.86:1 Ratio, Ford, 9 in., Set

Part Number: RMG-6900671

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Ring and Pinion Installation Kit, Master Kit, Ford, 9 in. Diameter Ring Gear, Kit

Part Number: MGR-R9RMK

1.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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

Part Number: MGR-F9-IO28

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Differential Side Bearing Spacer; Differential Carrier Shims; For Ford 7.5 in./GM 7.5 in./GM 8.5 in./GM 8.2 in

Part Number: RMG-3800061

4.53 out of 5 stars ( 15 )

Estimated Ship Date: Today

Differential Clutch Pack, Composite, Ford 8.8, Kit

Part Number: MGR-F8-8CPK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Differential Carriers, Trac-Loc Carrier Cases, Ford 8 in., Clutch-type, 10-bolt, 28-spline, Does Not Include Spider Gears, Rear, Ford 8 in., Each

Part Number: YGA-20075

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.57:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F890457

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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