USA Standard Gear Spartan Lockers

4.21 out of 5 stars 29 Customer Reviews

Spartan lockers are affordable, reliable traction. These USA Standard Gear Spartan lockers are mechanical lockers that fit into a standard differential carrier, replacing the open spider gears. They do not use thrust washers and have a revolutionary spring and pin design to make installation a snap! Spartan lockers feature high-nickel 9310 chromoly drivers and couplers for added strength. Give your vehicle great traction and save some cash. Drop in Spartan lockers for improved traction. They're available for a variety of makes and models spanning more than a half-century.

Results 1 - 24 of 24

USA Standard Gear Spartan Lockers Dana 30 SL D30-27

Spartan Differential Locker, Dana 30, 27-spline Axle, Jeep, Ford, International, Each

Part Number: SPZ-17000

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

USA Standard Gear Spartan Lockers GM 8.5 Inch SL GM8.5-28

Spartan Differential Locker, GM 8.5 in., 28-spline Axle, Buick, Oldsmobile, Pontiac, Chevy, GMC, Each

Part Number: SPZ-17040

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Sep 8, 2025 if ordered today

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Estimated Ship Date: Sep 8, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 44 SL D44-30

Spartan Differential Locker, Dana 44, 30-spline Axle, Jeep, Ford, Dodge, International, Isuzu, Each

Part Number: SPZ-17001

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 60 SL D60-35

Spartan Differential Locker, Dana 60, 35-spline Axle, Ford, Chevy, Dodge, GMC, Plymouth, Each

Part Number: SPZ-17004

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers GM 8.875 Inch (12-bolt), truck SL GM12-30

Differential Carrier, Spartan Locker, 30-spline, Steel, Rear, GM 8.875 in., Each

Part Number: SPZ-17032

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

USA Standard Gear Spartan Lockers Ford 8.8 Inch SL F8.8-31

Spartan Differential Locker, Ford 8.8 in., 31-spline Axle, Ford, Each

Part Number: SPZ-17005

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Powertrax Lock-Right Lockers Ford 8.8 Inch 1822-LR

3 out of 5 stars ( 6 )

Estimated Ship Date: Monday 8/4/2025

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USA Standard Gear Spartan Lockers Toyota 9.5 Inch SL TLC-30

Spartan Differential Locker, Toyota 9.5 in., 30-spline Axle, Toyota, Each

Part Number: SPZ-17033

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 35 SL M35-1.5-27

Spartan Differential Locker, Dana 35, 27-spline Axle, Jeep, 1.560 in. Carrier, Each

Part Number: SPZ-17007

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 44 SL D44HD-30

Differential Carrier, Spartan Locker, Steel, 10-bolt, 30-spline, Rear, Dana 44, Jeep, Each

Part Number: SPZ-17002

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Chrysler 8.25 Inch SL C8.25-29

Spartan Differential Locker, Chrysler 8.25 in., 29-spline Axle, Chrysler, Dodge, Jeep, Plymouth, Each

Part Number: SPZ-17038

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 8/4/2025

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Estimated Ship Date: Monday 8/4/2025

USA Standard Gear Spartan Lockers AMC Model 20 SL M20-29

Differential Carrier, Spartan Locker, Steel, 12-bolt, 29-spline, Rear, AMC Model 20, AMC, Hummer, Jeep, Each

Part Number: SPZ-17006

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Suzuki 6.9 Inch SL SUZSAM

Spartan Differential Locker, Suzuki 6.9 in., 26-spline Axle, Suzuki, Each

Part Number: SPZ-17013

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Toyota 8.0 (7.8) Inch SL T8-30

Spartan Differential Locker, Toyota, 8.0 in., 30-spline Axle, Rear, Each

Part Number: SPZ-17015

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Toyota V6 SL TV6-30

Spartan Differential Locker, Toyota, 30-spline Axle, Toyota, V6, Each

Part Number: SPZ-17034

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Chrysler 8.25 Inch SL C8.25-27

Differential Carrier, Spartan Locker, Steel, 27-spline, Rear, Chrysler 8.25 in., Each

Part Number: SPZ-17037

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Ford 8/9 Inch SL F9-28-31

Differential Carrier, Spartan Locker, Steel, 28/31-spline, Open Case, Rear, Ford 8/9 in., Each

Part Number: SPZ-17042

2.67 out of 5 stars ( 3 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers GM 8.5 Inch SL GM8.5-30

Differential Carrier, Spartan Locker, Steel, 30-spline, Rear, GM 8.5 in., Each

Part Number: SPZ-17041

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 30/M186, Jeep Wrangler JL SL D30JL-27

Spartan Locker for Dana 30 JL M186 Differential

Part Number: SPZ-17046

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

USA Standard Gear Spartan Lockers Toyota 7.5 Inch SL T7.5-27

Spartan Differential Locker, Toyota 7.5 in., 27-spline Axle, Toyota, Each

Part Number: SPZ-17014

Not Yet Reviewed

Estimated Ship Date: Aug 20, 2025 if ordered today

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Estimated Ship Date: Aug 20, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 44 SL D44-19

D44 19spl SPARTAN LOCKER

Part Number: SPZ-17043

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 60 SL D60-30

Differential Carrier, Spartan Locker, Steel, 10-bolt, 30-spline, Rear, Dana 60, Chevy, Dodge, Ford, Jeep, Each

Part Number: SPZ-17003

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Dana 35 SL M35-1.6-27

Spartan Differential Locker, Dana 35, 27-spline Axle, Jeep, 1.625 in. Carrier, Each

Part Number: SPZ-17008

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Powertrax Lock-Right Lockers Dana 35 2311-LR

3 out of 5 stars ( 2 )

Estimated Ship Date: Monday 8/4/2025

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USA Standard Gear Spartan Lockers Nissan H233B SL NPATROL-31

Differential Carrier, Spartan Locker, Steel, 31-spline, Rear, for Nissan H233B, Each

Part Number: SPZ-17036

Not Yet Reviewed

Estimated Ship Date: Aug 21, 2025 if ordered today

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Estimated Ship Date: Aug 21, 2025 if ordered today

USA Standard Gear Spartan Lockers Nissan M226 SL NTITAN-32

Differential Carrier, Spartan Locker, Steel, 12-bolt, 32-spline, Rear, Nissan M226, Nissan, Each

Part Number: SPZ-17009

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 14, 2025 if ordered today

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Estimated Ship Date: Aug 14, 2025 if ordered today

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