MERCURY COUGAR Differential & Rear-End Components

Differential Shims, Pinion, Steel, Kit

Part Number: MGR-WAA4663

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Gear, Ring and Pinion, 4.56:1 Ratio, 1.312 in. Pinion, 28 Spline, 9.000 in. Ring Gear, Ford 9 in., Set

Part Number: YGA-24109

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Gear, Ring and Pinion, EXCel, 3.80:1 Ratio, Ford, 8 in., 10-Bolt, Set

Part Number: RMG-F8380

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Differential Clutch, Steel Pack, Rear, Posi, GM, 8.875 in., Set

Part Number: YGA-16041

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Estimated Ship Date: Jan 13, 2026 if ordered today

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Differential Carrier, Open, Ford 8.8 in., 31 Spline, Complete w/Spider Gears, Each

Part Number: YGA-20070

5.0 out of 5 stars ( 4 )

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Differential Carrier Bearing, Races Included, Koyo Bearing, Steel, Set

Part Number: MGR-706016XR

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Ring and Pinion Gears, 3.31:1 Ratio, 30-spline, Standard Ring Gear Rotation, Ford 8.8 in., Set

Part Number: SPZ-36121

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Solid Spacer, Ford, 9 in. with Daytona Pinion, Each

Part Number: MGR-SS9

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

Ring and Pinion-Ford 9

Part Number: MGR-F9-350A

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Estimated Ship Date: Jan 5, 2026 if ordered today

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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: Jan 5, 2026 if ordered today

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Cross Shaft, Differential, Steel, Ford, 8.8 in., 0.750 in., 28 Spline, Each

Part Number: RMG-80-0273-1

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Differential, Grip LS Traction System, 28-Spline, Ford, 8 in., Each

Part Number: PWT-LS108028

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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• Mfr. Rebate

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $771.99

Rebate Expires: 12/31/2025

Get $35 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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Crosspin Shaft, Steel, 0.875 in. Diameter, Each

Part Number: YGA-33434

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Differential Crush Sleeve; Fits Ford 7.5 in./8.8 in./9 in.

Part Number: RMG-19-0002-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Differential, No-Slip Traction System, 28-Spline, Ford, 8 in., Each

Part Number: PWT-92-0680-2800

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $469.99

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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Differential Carrier Cases, Ford 8.8 in., 31 Spline, 0.875 in. X-Pin Hole, Each

Part Number: YGA-20077

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Ring and Pinion Gears, 3.25:1 Ratio, 28-spline, Standard Ring Gear Rotation, Ford 9 in., Set

Part Number: YGA-24367

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Full Spool

Part Number: MGR-FS9-35LW

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

Part Number: PWT-LS109031

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Estimated Ship Date: Today

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• Mfr. Rebate

$35.00 Mail-In Rebate

Price after Manufacturer Rebate: $701.99

Rebate Expires: 12/31/2025

Get $35 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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Gear, Ring and Pinion, 5.14:1 Ratio, Ford, 8.8 in., Set

Part Number: MGR-F888514

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Gear, Ring and Pinion, 3.27:1 Ratio, Ford, 8.8 in., Set

Part Number: MGR-F8-8-327

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Gear, Ring and Pinion, 3.89:1 Ratio, 1.312 in. Pinion, 28 Spline, 9.000 in. Ring Gear, Ford 9 in., Set

Part Number: YGA-24107

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Estimated Ship Date: Jan 19, 2026 if ordered today

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

Part Number: YGA-33154

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Gear, Ring and Pinion, 3.08:1 Ratio, 1.625 in. Pinion, 8.800 in. Ring Gear, Ford 8.8 in., Set

Part Number: YGA-24349

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Estimated Ship Date: Jan 13, 2026 if ordered today

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Differential Clutch, Steel Pack, Dura-Grip, Eaton, 18-Plate, GM, 8.875 in., Set

Part Number: YGA-16110

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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