1966 FORD MUSTANG Differential & Rear-End Components

Differential, Eaton Detroit Truetrac, 31-Spline, Ford 9 in., Each

Part Number: ETN-913A586

4.75 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Differential Cover, Ford 9.75 in. Axle, Nodular Iron, Silver Hammertone Powedercoated, Each

Part Number: SDH-10023539

4.61 out of 5 stars ( 38 )

Estimated Ship Date: Today

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Axle Assembly, 9 in. Rear-End Housing Assembly, Bolt-in, 1541H Alloy Steel, 31-spline Axle Shaft, Ford, Each

Part Number: CUR-CE-FDM6466X

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Gear, Ring and Pinion, 4.29:1 Ratio, Ford, 9 in., Set

Part Number: RMG-79-0079-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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

Part Number: RMG-79-0080-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Crate Axle, 64-66 Mustang Centurion 9-Inch, Black PC, 31-Spline, 3.50 Ratio, Helical Limited Slip, Wilwood 11" Dynapro Black Calipers

Part Number: CUR-CR-FM135TWAB

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Axle Shaft, Rear, Cut To Fit, Bolt-In, 1541H Alloy, 28 Spline, 25.500-32.870 in. Length, Ford 8.0 in., Each

Part Number: YGA-21410

4.58 out of 5 stars ( 12 )

Estimated Ship Date: Today

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

Part Number: RMG-79-0004-1

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.11:1 Ratio, Ford, 9 in., Set

Part Number: RMG-6901791

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Differential, Eaton Detroit Truetrac, Limited Slip, 28-Spline, Ford, 8 in., Each

Part Number: ETN-912A616

5.0 out of 5 stars ( 9 )

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Gear, Ring and Pinion, EXCel, 3.50:1 Ratio, Ford, 9 in., Set

Part Number: RMG-F9350

5.0 out of 5 stars ( 3 )

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Gear, Ring and Pinion, 3.50:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F890350

4.71 out of 5 stars ( 7 )

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

Part Number: RMG-6903611

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Differential, Eaton Detroit Locker, 31-Spline, Ford, 9 in., Each

Part Number: ETN-187SL17B

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Jan 27, 2026 if ordered today

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Gear, Ring and Pinion, 3.50:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F9-350

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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

Part Number: RMG-79-0043-1

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.11:1 Ratio, Ford, 9 in., Set

Part Number: RMG-79-0045-1

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 3.00:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F9-300

5.0 out of 5 stars ( 4 )

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Ring and Pinion Installation Kit, Bearings and Shims, Ford 9 in., with 3.250 in. Carrier Bearing, Kit

Part Number: RMG-8310051

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Bearing, Pinion, 1.312 in. Inside Diameter, Each

Part Number: TMK-M88048

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Today

Dura Grip Positraction Carrier, Traction-Loc, Ford 8 in., 28 Spline,. Aggressive Engagement, Each

Part Number: YGA-26001

Not Yet Reviewed

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Gear, Ring and Pinion, 3.55:1 Ratio, Ford, 8 in., Set

Part Number: MGR-F880355

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Gear, Ring and Pinion, 4.30:1 Ratio, Ford, 9 in., Set

Part Number: MGR-F890430

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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

Part Number: MGR-F890389

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Bearing, Differential Carrier, Kit

Part Number: TMK-SET45

4.44 out of 5 stars ( 9 )

Estimated Ship Date: Today