CHEVROLET Chevy big block Mark IV USA Standard Gear Differential & Rear-End Components Transmission & Drivetrain - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

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 )

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USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 GM 8.5/8.6 in. 4.11 Gears

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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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2225 GM 8.875 in. (12-bolt) truck 3.08 Gears

Ring and Pinion Gears,USA Standard 8.875" GM 12 Bolt Truck, 3.08 Ratio Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals

Part Number: SPZ-10680

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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2012 GM 8.5 in. 3.73 Gears

Ring and Pinion Gears,USA Standard 8.5" GM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals. Fits 1.625" Carrier Bearing Journal

Part Number: SPZ-10723

5.0 out of 5 stars ( 1 )

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USA Standard Gear Ring and Pinion Sets ZG GM8.5-456 GM 8.5/8.6 in. 4.56 Gears

Ring and Pinion Gear, 4.56:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36218

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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2226 GM 8.875 in. (12-bolt) truck 3.42 Gears

Ring and Pinion Gears,USA Standard 8.875" GM 12 Bolt Truck, 3.42 Ratio Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals

Part Number: SPZ-10681

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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

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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 Spider Gear Sets ZIKGM8.5-S-28

Differential Carrier Rebuild Kits and Spider Gears, GM 8.5 in., Side Gears, 28-spline, 10-bolt, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Kit

Part Number: SPZ-39026

5.0 out of 5 stars ( 1 )

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USA Standard Gear Ring and Pinion Sets ZG GM12P-373 GM 8.875 in. (12-bolt) passenger car 3.73 Gears

Ring and Pinion Gears, 3.73:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 8.875 in. Passenger Car, Set

Part Number: SPZ-36167

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USA Standard Gear Ring and Pinion Sets ZG D44-538 Dana 44 5.38 Gears

Ring and Pinion Gears, 5.38:1 Ratio, 26-spline, Standard Ring Gear Rotation, Dana 44, Set

Part Number: SPZ-36053

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USA Standard Gear Ring and Pinion Sets ZG GM8.5-373 GM 8.5/8.6 in. 3.73 Gears

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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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2228 GM 8.875 in. (12-bolt) truck 3.73 Gears

Ring and Pinion Gears,USA Standard 8.875" GM 12 Bolt Truck, 3.73 Ratio Thick Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals

Part Number: SPZ-10683

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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

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USA Standard Gear Ring and Pinion Sets ZG GM8.5-342 GM 8.5/8.6 in. 3.42 Gears

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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Motive Gear Ring and Pinion Sets GM10-342A GM 8.5/8.625 in. 3.42 Gears

4.5 out of 5 stars ( 16 )

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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

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USA Standard Gear Ring and Pinion Sets ZG D60-513 Dana 60 5.13 Gears

Ring and Pinion Gears, 5.13:1 Ratio, 29-spline, Standard Ring Gear Rotation, Dana 60, Set

Part Number: SPZ-36078

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USA Standard Gear Axle Shafts ZA G14035542

Axle Shaft, 28-Spline, 31.313 in. Length, Rear, Chevy, GMC, Each

Part Number: SPZ-35172

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USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2123 GM 10.5 in. (14-bolt) 5.13 Gears

Ring and Pinion Gears,USA Standard 10.5" GM 14 Bolt, 5.13 Ratio Thick Rear Ring & Pinion GearInstall Kit Package,

Part Number: SPZ-10836

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USA Standard Gear Spider Gear Sets ZIKGM8.2-S-28

Differential Carrier Rebuild Kits and Spider Gears, GM 8.2 in., Side Gears, Rear, Open, 28-spline, 10-bolt, Chevy, Kit

Part Number: SPZ-39025

5.0 out of 5 stars ( 2 )

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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 )

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USA Standard Gear Ring and Pinion Sets ZG GM12T-373T GM 8.875 in. (12-bolt) truck 3.73 Gears

USA Standard Ring & Pinion gear set for GM 12 bolt truck in a 3.73 ratio

Part Number: SPZ-36176

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USA Standard Gear Ring and Pinion Sets ZG GM9.5-342 GM 9.5 in. 3.42 Gears

USA Standard Ring & Pinion gear set for GM 9.5" in a 3.42 ratio

Part Number: SPZ-36298

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USA Standard Gear Axle Shafts ZA G14071750

Axle Shaft, 30-Spline, 31.438 in. Length, Rear, Chevy, GMC, Each

Part Number: SPZ-35053

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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USA Standard Gear Ring and Pinion Sets ZG GM14T-538T GM 10.5 in. (14-bolt) 5.38 Gears

Ring and Pinion Gears, 5.38:1 Ratio, 30-spline, Standard Ring Gear Rotation, GM 10.5 in. (14-bolt), Set

Part Number: SPZ-36188

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today