1966 USA Standard Gear Differential & Rear-End Components Transmission & Drivetrain - Free Shipping on Orders Over $109 at Summit Racing

USA Standard Gear Axle Shafts ZA G8.2BOP-L

Axle Shaft, 28-spline, 29.875 in. Length, Rear, GM 8.2 in., BOP Axle, Pontiac, Each

Part Number: SPZ-35060

4.83 out of 5 stars ( 6 )

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USA Standard Gear Master Overhaul Kits ZK GM12T

Ring and Pinion Gear Installation Kits, Master Overhaul Kits, 30-spline, GM 8.875 in. (12-bolt) Truck, Rear, Chevrolet, GMC, Kit

Part Number: SPZ-37043

Not Yet Reviewed

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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 ( 5 )

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USA Standard Gear Ring and Pinion Sets ZG C8.42-355-C Chrysler 8.75 in. 742 case 3.55 Gears

Gear, Ring and Pinion, 3.55:1, Chrysler, 8.75 in. 742, Set

Part Number: SPZ-36300

4.0 out of 5 stars ( 2 )

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USA Standard Gear Master Overhaul Kits ZK D60-R

Ring and Pinion Gear Installation Kits, Master Overhaul Kits, 29-spline, Dana 60, Rear, Chevrolet, Dodge, Ford, GMC, Jeep, Plymouth, Kit

Part Number: SPZ-37021

Not Yet Reviewed

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USA Standard Gear Master Overhaul Kits ZK F9-A

USA Standard Master Overhaul kit for the Ford 9" LM102910 differential

Part Number: SPZ-37033

3.0 out of 5 stars ( 1 )

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USA Standard Gear Ring and Pinion Sets ZG F9-325 Ford 9 in. 3.25 Gears

Ring and Pinion Gears, 3.25:1 Ratio, 28-spline, Standard Rotation, Ford 9 in., Ford, Lincoln, Mercury, Rear, Set

Part Number: SPZ-36134

4.0 out of 5 stars ( 1 )

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USA Standard Gear Spider Gear Sets ZIKGM12-S-30

Differential Carrier Rebuild Kits and Spider Gears, Spider Gear Sets, GM 8.875 in. (12-bolt), Car/Truck, 30-spline, Buick, Chevy, GMC, Pontiac, Kit

Part Number: SPZ-39021

5.0 out of 5 stars ( 2 )

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USA Standard Gear Master Overhaul Kits ZK GM8.2

Ring and Pinion Installation Kit, GM 8.2 in., Rear, Kit

Part Number: SPZ-37051

4.75 out of 5 stars ( 4 )

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USA Standard Gear Ring and Pinion Sets ZG D44-456T Dana 44 4.56 Gears

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

Part Number: SPZ-36045

Not Yet Reviewed

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USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2214

Ring and Pinion Gears,USA Standard 8.2" GM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 28 Spline and 2.25" OD Axle Bearings & Seals

Part Number: SPZ-10669

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2025 if ordered today

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Estimated Ship Date: Nov 20, 2025 if ordered today

USA Standard Gear Spartan Limited Slip 27 Spline Differential Dana 30 SL D30-4-27-LSD

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

Part Number: SPZ-10383

Not Yet Reviewed

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USA Standard Gear Ring and Pinion Sets ZG D44-373 Dana 44 3.73 Gears

Ring and Pinion Gears, 3.73:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36040

Not Yet Reviewed

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Motive Gear Ring and Pinion Sets D44-373 Dana 44 3.73 Gears

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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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: Nov 20, 2025 if ordered today

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Estimated Ship Date: Nov 20, 2025 if ordered today

USA Standard Gear Master Overhaul Kits ZK C9.25-R

USA Standard Master Overhaul kit for the Chrysler 9.25" rear differential.

Part Number: SPZ-37002

Not Yet Reviewed

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USA Standard Gear Ring and Pinion Sets ZG D44-456 Dana 44 4.56 Gears

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

Part Number: SPZ-36044

Not Yet Reviewed

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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: Nov 21, 2025 if ordered today

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Estimated Ship Date: Nov 21, 2025 if ordered today

USA Standard Gear Ring and Pinion Sets ZG F9-370 Ford 9 in. 3.70 Gears

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

Part Number: SPZ-36137

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

USA Standard Gear Ring and Pinion Sets ZG GM12P-390 GM 8.875 in. (12-bolt) passenger car 3.90 Gears

USA Standard Ring & Pinion gear set for GM 12 bolt car in a 3.90 ratio

Part Number: SPZ-36169

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2025 if ordered today

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Estimated Ship Date: Nov 20, 2025 if ordered today

USA Standard Gear Ring and Pinion Sets ZG D60-354 Dana 60 3.54 Gears

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

Part Number: SPZ-36073

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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USA Standard Gear Ring and Pinion Sets ZG C8.89-355 Chrysler 8.75 in. 489 case 3.55 Gears

Ring and Pinion Gears, 3.55:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 489 Case, Set

Part Number: SPZ-36014

Not Yet Reviewed

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Motive Gear Performance Ring and Pinion Sets C887355L Chrysler 8.75 in. 489 case 3.55 Gears

3 out of 5 stars ( 4 )

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USA Standard Gear Master Overhaul Kits ZK D60-F

USA Standard Master Overhaul kit Dana 60, Front, Kit

Part Number: SPZ-37020

Not Yet Reviewed

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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2211 GM 8.2 in. 3.73 Gears

Ring and Pinion Gears,USA Standard 8.2" GM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 2.25" OD Axle Bearings & Seals

Part Number: SPZ-10666

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2025 if ordered today

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Estimated Ship Date: Nov 20, 2025 if ordered today

USA Standard Gear Master Overhaul Kits ZK D44

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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USA Standard Gear Ring and Pinion Sets ZG GM12P-342 GM 8.875 in. (12-bolt) passenger car 3.42 Gears

USA Standard Ring & Pinion gear set for GM 12 bolt car in a 3.42 ratio

Part Number: SPZ-36165

Not Yet Reviewed

Estimated Ship Date: Nov 18, 2025 if ordered today

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Estimated Ship Date: Nov 18, 2025 if ordered today