MERCURY GRAND MARQUIS Differential & Rear-End Components

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

Part Number: MGR-F8-8-327

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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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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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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 20, 2026 if ordered today

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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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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

USA Standard Gear standard spider gear set for Ford 7.5"

Part Number: SPZ-39014

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 9, 2026 if ordered today

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

Part Number: PWT-92-0690-2800

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Estimated Ship Date: Today

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• Mfr. Rebate

$40.00 Mail-In Rebate

Price after Manufacturer Rebate: $582.99

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 Rebuild Kits and Spider Gears, Ford 8.8 in., Side Gears, Rear, Limited Slip, Traction Loc, 31-spline, 10-bolt, Ford, Lincoln, Kit

Part Number: SPZ-39032

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Axle Shaft, 28-Spline, 31.625 in. Length, Rear, Ford, Each

Part Number: YGA-21199

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Estimated Ship Date: Jan 20, 2026 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: Jan 20, 2026 if ordered today

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Pinion gear for 8" and 9" Ford.

Part Number: YGA-16160

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Differential Cover Bolt, Hex-flange Head, Steel, Black, Ford 7.5 in., Ford 8.8 in., Ford 8.8 in. IRS, Ford 9.75 in., Ford 9.75 in. IRS, Each

Part Number: YGA-33554

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Bearing, Pinion, 1.850 in. Outside Diameter, Each

Part Number: TMK-R1535TAV

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

Part Number: MGR-R9RNMK

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 12, 2026 if ordered today

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Ring and Pinion Installation Kit, Super Kit, Ford 8.8 in., Car, Kit

Part Number: MGR-R88RSKCT

4.25 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Ring & Pinion Gear Set Ford 8.8" / 3.31 Ratio

Part Number: SVL-2020740

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Ring Gear Bolt, Hex, 7/16-20 in. Thread Size, 1.25 in. Long, Steel, Black Oxide, Each

Part Number: MGR-D8OZ4216A

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Ring and Pinion-Ford 9

Part Number: MGR-F9-389A

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Differential Cover, 10-bolt, Steel, Natural, Ford 8.8 in., Each

Part Number: YGA-32328

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Ring and Pinion-Ford 9

Part Number: MGR-F9-456A

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Differential Carrier Rebuild Kits and Spider Gears, Spider Gear Sets, Ford 8.8 in., 28-spline, 10-bolt, Ford, Lincoln, Mazda, Mercury, Kit

Part Number: SPZ-39015

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Estimated Ship Date: Jan 5, 2026 if ordered today

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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 12, 2026 if ordered today

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