1990 USA Standard Gear Parts and Accessories

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

Part Number: SPZ-17040

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Ring and Pinion Gear Installation Kits, Master Overhaul Kits, 10-bolt, 31-spline, Standard Ring Gear Rotation, Dana 44, Front, Chevy, Dodge, Ford, Kit

Part Number: SPZ-37008

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

Part Number: SPZ-17000

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Ring and Pinion Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36216

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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

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Gear, Ring and Pinion, 3.73:1, Toyota, 8 in., Set

Part Number: SPZ-36316

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RING AND PINION GEARS, USA Standard ring & pinion sets

Part Number: SPZ-36329

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Differential Carrier, Spartan Helical Gear Limited Slip, Dana 30, Front, 27 Spline, 3.73 and Up Ratio, Each

Part Number: SPZ-10383

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Ring and Pinion Gears, 5.13:1 Ratio, 30-spline, Standard Ring Gear Rotation, Ford 8.8 in., Set

Part Number: SPZ-36128

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Gear, Ring and Pinion, 4.30:1 Ratio, Dana 80, Set

Part Number: SPZ-36096

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

Part Number: SPZ-17038

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Ring and Pinion Gears, 4.11:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36041

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Ring and Pinion Gears, 3.54:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 70, Set

Part Number: SPZ-36087

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Gear, Ring and Pinion, 3.73:1, GM, 8.25 in. IFS, Set

Part Number: SPZ-36342

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Ring and Pinion Gear, 3.73:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36214

4.5 out of 5 stars ( 6 )

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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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Ring and Pinion Gears,USA Standard 8.5" GM, 4.11 Ratio Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals. Fits 1.625" Carrier Bearing Journal

Part Number: SPZ-10724

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Estimated Ship Date: Feb 16, 2026 if ordered today

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USA Standard Master Overhaul kit GM, 10.5 in., Kit

Part Number: SPZ-37045

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Estimated Ship Date: Feb 17, 2026 if ordered today

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Ring and Pinion Gears, 3.73:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 30, Set

Part Number: SPZ-36024

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Estimated Ship Date: Feb 16, 2026 if ordered today

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USA Standard Master Overhaul kit Dana 44 differential, 30 spline, rear axle

Part Number: SPZ-37015

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Estimated Ship Date: Feb 16, 2026 if ordered today

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Ring and Pinion Gears, 3.42:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.5/8.6 in., Set

Part Number: SPZ-36213

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Estimated Ship Date: Feb 18, 2026 if ordered today

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Ring and Pinion Gears, Ford 7.5 in., 3.73:1 Ratio, 28-spline, Standard Rotation, Ford 7.5 in., Rear, Ford, Lincoln, Mazda, Mercury, Set

Part Number: SPZ-36114

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Ring and Pinion Gears, 3.54:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 60, Set

Part Number: SPZ-36073

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Ring and Pinion Gears, 4.56:1 Ratio, 26-spline, Reverse Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36066

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Estimated Ship Date: Feb 13, 2026 if ordered today

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Ring and Pinion Gears, 3.73:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 70, Set

Part Number: SPZ-36088

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Estimated Ship Date: Feb 16, 2026 if ordered today

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