Moser Engineering Full Spools

4.58 out of 5 stars 12 Customer Reviews

Replace your old gear carrier with a Moser Engineering full spool to save weight, improve performance, and increase the life of your rear-end components. The steel spools are heat-treated and precision-machined; while lighter aluminum spools are available for Ford 9 in. and GM 12-bolt units. The aluminum models feature a thicker ring-gear flange and a large-diameter midsection for increased strength; they weigh approximately 4 lbs. less than steel spools. Order the full spool recommended for your axle make/model.

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Moser Engineering Full Spools 5S12333

Spool, Full Size, Steel, 33-Spline, 3 Series, 12-Bolt, GM 8.875 in., Passenger Car, Each

Part Number: MSR-5S1233-3

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

Moser Engineering Full Spools 5S8831

Spool, Full Size, Steel, 31-Spline, 10-Bolt, Ford 8.8 in., Each

Part Number: MSR-5S8831

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S9F40

Spool, Full Size, Steel, 40-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MSR-5S9F40

3.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

Moser Engineering Full Spools 5S9F35

Spool, Full Size, Steel, 35-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MSR-5S9F35

Not Yet Reviewed

Estimated Ship Date: Monday 10/19/2026 if shipped by air

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Estimated Ship Date: Monday 10/19/2026 if shipped by air

Moser Engineering Full Spools 5S9F31

Spool, Full Size, Steel, 31-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MSR-5S9F31

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S8833

Spool, Full Size, Steel, 33-Spline, 10-Bolt, Ford 8.8 in., Each

Part Number: MSR-5S8833

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5SD404

Spool, Full Size, Steel, 40-Spline, 10-Bolt, Dana 60, Each

Part Number: MSR-5SD404

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S9F33

Spool, Full Size, Steel, 33-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MSR-5S9F33

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S12354

Spool, Full Size, Steel, 35-Spline, 4 Series, 12-Bolt, GM 8.875 in., Each

Part Number: MSR-5S12354

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S12353

Spool, Full Size, Steel, 35-Spline, 3-Series, GM, 12-Bolt Passenger Car, Each

Part Number: MSR-5S12353

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S9F35A

Spool, Full Size, Aluminum, 35-Spline, 10-Bolt, Ford 9 in., Each

Part Number: MSR-5S9F35A

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5SD353

Spool, Full Size, Steel, 35-Spline, 10-Bolt, Dana 60, Each

Part Number: MSR-5SD353

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5SD354

Spool, Full Size, Steel, 35-Spline, 10-Bolt, Dana 60, Each

Part Number: MSR-5SD354

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S1230

Spool, Full Size, Steel, 30-Spline, 4 Series, 12-Bolt, GM 8.875 in., Each

Part Number: MSR-5S1230

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S8835

Spool, Full Size, Steel, 35-Spline, 10-Bolt, Ford 8.8 in., Each

Part Number: MSR-5S8835

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S1233A

Spool, Full Size, Aluminum, 33-Spline, 4 Series, 12-Bolt, GM 8.875 in., Passenger Car, Each

Part Number: MSR-5S1233A

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S87535

Spool, Full Size, Steel, 35-Spline, Chrysler 8.75 in., Each

Part Number: MSR-5S87535

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S1033

Spool, Full Size, Steel, 33-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: MSR-5S1033

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S12334

Spool, Full Size, Steel, 33-Spline, 4 Series, 12-Bolt, GM 8.875 in., Passenger Car, Each

Part Number: MSR-5S12334

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S9F40P

Spool, Full, Steel, 40-spline, Fits A 3.250 in. Case Only, Ford 9 in., Each

Part Number: MSR-5S9F40P

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S12333T

Spool, Full Size, Steel, 33-Spline, 3 Series, 12-Bolt, GM 8.875 in., Truck, Each

Part Number: MSR-5S12333T

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

Moser Engineering Full Spools 5S1030

Spool, Full Size, Steel, 30-Spline, 10-Bolt, GM 8.5 in., Each

Part Number: MSR-5S1030

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 1, 2026 if ordered today

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Estimated Ship Date: Dec 1, 2026 if ordered today

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