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USA Standard Gear

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When purchasing a product, price is the consumer's primary concern. At present, USA Standard Gear has 306 products for sale. USA Standard Gear products range in price from $70.25 to $377.78, and the average price of all the products is about $193.44.

We found that most of the USA Standard Gear products are manufactured by Spartan Locker. The manufacturer provides USA Standard Gear with a steady supply of products, and they have a good cooperative relationship with each other.

You can confidently purchase USA Standard Gear products on Amazon.com. The brand holds an average rating of 4.5, testifying to its excellent reputation.

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USA Standard Gear Best Sellers

Last Updated: Jan 9, 2026

Differential Assembly Kits

USA Standard Gear Spartan Locker for Dana 30 diff, 27 Spline, Includes Heavy-Duty Cross pin Shaft

USA Standard Gear Spartan Locker for Dana 30 diff, 27 Spline, Includes Heavy-Duty Cross pin Shaft Cover
  • Fits Dana Spicer 30 with 27 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Differential Assembly Kits

USA Standard Gear Spartan Locker for Dana 44, (not D44-HD) 30 Spline Axles, with Cross Pin Shaft

USA Standard Gear Spartan Locker for Dana 44, (not D44-HD) 30 Spline Axles, with Cross Pin Shaft Cover
  • Fits Dana Spicer 44 with 30 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Differential Assembly Kits

USA Standard Gear (ZK GM8.6) Master Overhaul Kit for GM 8.6 Differential

USA Standard Gear (ZK GM8.6) Master Overhaul Kit for GM 8.6 Differential Cover
  • USA Standard Master Overhaul kits let you finish your install with confidence
  • This kit uses Koyo bearings and races
  • Includes carrier bearings and races,
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Differential Rings & Pinions

USA Standard Gear (ZIKM35-S-27-1.5) Spider Gear Set for AMC Model 35 Differential with 1.560 Side Gear Bore

USA Standard Gear (ZIKM35-S-27-1.5) Spider Gear Set for AMC Model 35 Differential with 1.560 Side Gear Bore Cover
  • USA Standard Gear standard spider gear set for AMC Model 35 with 1.560" side gear bore
  • OEM Replacement Quality
  • Includes Two Side Gears, Two Pinion Gears, Cross Pin Shaft, Cross Pin Bolt and Spider Gear Thrust Washers
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Differential Rings & Pinions

USA Standard Gear (ZG D30R-488R) Replacement Ring & Pinion Gear Set for Dana 30 Reverse Rotation Differential

USA Standard Gear (ZG D30R-488R) Replacement Ring & Pinion Gear Set for Dana 30 Reverse Rotation Differential Cover
  • USA Standard ring and pinion sets are the right choice to add confidence to your install
  • USA Standard Gear offers a full line of ring and pinion sets for a variety of common and hard to find applications
  • USA standard gear offers a standard one year warranty against defects on their ring and pinion sets
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Differential Assembly Kits

USA Standard Gear (ZK D44) Master Overhaul Kit for Dana 44 Differential with 30 Spline

USA Standard Gear (ZK D44) Master Overhaul Kit for Dana 44 Differential with 30 Spline Cover
  • USA Standard Master Overhaul kits let you finish your install with confidence
  • This kit uses Koyo bearings and races
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable)
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Differential Rings & Pinions

USA Standard Gear - ZIKF8.8-T/L-31 Standard Spider Gear Set for Ford 8.8" Trac Loc Posi, 31 Spline

USA Standard Gear - ZIKF8.8-T/L-31 Standard Spider Gear Set for Ford 8.8" Trac Loc Posi, 31 Spline Cover
  • Fits Ford 8.8" 31 spline Trac-Loc positraction
  • Spider gear kit
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Differential Assembly Kits

USA Standard Gear (ZK GM12T) Master Overhaul Kit for GM 12-Bolt Truck Differential

USA Standard Gear (ZK GM12T) Master Overhaul Kit for GM 12-Bolt Truck Differential Cover
  • USA Standard Master Overhaul kits let you finish your install with confidence
  • This kit uses Koyo bearings and races
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable)
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Drive Shaft Assemblies

New USA Standard Front Driveshaft for Wrangler, 38" Center to Center

New USA Standard Front Driveshaft for Wrangler, 38" Center to Center Cover
  • Compressed length of 38 in. measured from center to center of the furthest universal joint
  • 1310 universal joint at the differential
  • 1310 Double cardan CV Joint at Transfer Case
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Power Steering Gear Boxes

USA Standard Gear, Power Steering Box, Compatible with 2007-18 Jeep Wrangler JK, ZSG8417

USA Standard Gear, Power Steering Box, Compatible with 2007-18 Jeep Wrangler JK, ZSG8417 Cover
  • STEERING PRECISION: The USA Standard Gear Power Steering Box is a vital component within a car's steering system - guides the wheel's movement in conjunction with the direction that the steering wheel is rotated, ensuring a precise steering response
  • REPLACE AND REFRESH: The USA Standard Gear Power Steering Gear Box is the cure for vague-feeling, worn out power steering in your vehicle - replace yours with a brand new, not refurbrished, product
  • LOCK-TO-LOCK TURNS: With 3.0 turns lock-to-lock, this power steering box offers a balanced and responsive steering experience that allows for smooth maneuvering in tight spaces while maintaining stability at higher speeds
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Transmission Overhaul Packages

USA Standard Gear Differential Master Overhaul Rebuild Kit for 2009 and Down Ford 8.8"

USA Standard Gear Differential Master Overhaul Rebuild Kit for 2009 and Down Ford 8.8" Cover
  • Uses High Quality Koyo Bearings and Races;Material:Alloy Steel,Rubber,gasket material,marking compound,threadlocker
  • Complete Installation Kit
  • This kit uses Koyo bearings and races
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Tool Boxes

USA Standard Gear (SL D60-35) Spartan Locker for Dana 60 Differential with 35 Spline Axles

USA Standard Gear (SL D60-35) Spartan Locker for Dana 60 Differential with 35 Spline Axles Cover
  • Easy, drop-in installation
  • Made from 9310 steel
  • Heat treated and precision cut teeth
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Differential Rings & Pinions

USA Standard Gear (ZIKGM7.5-S-26) Spider Gear Set for GM 26-Spline 7.5 Differential

USA Standard Gear (ZIKGM7.5-S-26) Spider Gear Set for GM 26-Spline 7.5 Differential Cover
  • OEM Replacement Quality
  • Package Dimensions: 8 L x 32.4 H x 31.2 W (centimeters)
  • Package Weight : 1.792 kilograms
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Power Steering Gear Boxes

USA Standard Gear, Power Steering Box, Compatible with 2002-22 Various GM 1500/2500/3500 Truck/SUV/Van, ZSG8418

USA Standard Gear, Power Steering Box, Compatible with 2002-22 Various GM 1500/2500/3500 Truck/SUV/Van, ZSG8418 Cover
  • STEERING PRECISION: The USA Standard Gear Power Steering Box is a vital component within a car's steering system - guides the wheel's movement in conjunction with the direction that the steering wheel is rotated, ensuring a precise steering response
  • REPLACE AND REFRESH: The USA Standard Gear Power Steering Gear Box is the cure for vague-feeling, worn out power steering in your vehicle - replace yours with a brand new, not refurbrished, product
  • LOCK-TO-LOCK TURNS: With 3.2 turns lock-to-lock, this power steering box offers a balanced and responsive steering experience that allows for smooth maneuvering in tight spaces while maintaining stability at higher speeds
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Differential Rings & Pinions

USA Standard Gear (ZG D44-411) Replacement Ring & Pinion Gear Set for Dana 44 Differential

USA Standard Gear (ZG D44-411) Replacement Ring & Pinion Gear Set for Dana 44 Differential Cover
  • USA Standard ring and pinion sets are the right choice to add confidence to your install
  • USA Standard Gear offers a full line of ring and pinion sets for a variety of common and hard to find applications
  • USA standard gear offers a standard one year warranty against defects on their ring and pinion sets
Buy on Amazon Find on eBay
Differential Rings & Pinions

USA Standard Gear (ZG D60-354) Replacement Ring & Pinion Gear Set for Dana 60 Differential

USA Standard Gear (ZG D60-354) Replacement Ring & Pinion Gear Set for Dana 60 Differential Cover
  • usa standard ring and pinion sets are the right choice to add confidence to your install
  • usa standard gear offers a full line of ring and pinion sets for a variety of common and hard to find applications
  • usa standard gear offers a standard one year warranty against defects on their ring and pinion sets
Buy on Amazon Find on eBay
Car Differential Kits

USA Standard Gear (ZBKGM8.5) Bearing Kit for GM 8.5 Rear Differential

USA Standard Gear (ZBKGM8.5) Bearing Kit for GM 8.5 Rear Differential Cover
  • This kit uses Koyo bearings and races along with all high quality small parts
  • Contains all the correct parts you need to install your ring and pinion set
  • Includes Installation Guide
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Power Steering Gear Boxes

USA Standard Gear, Power Steering Box, Compatible with 1997-05 Ford Heavy Duty Truck/Van/SUV, ZSG7569

USA Standard Gear, Power Steering Box, Compatible with 1997-05 Ford Heavy Duty Truck/Van/SUV, ZSG7569 Cover
  • STEERING PRECISION: The USA Standard Gear Power Steering Box is a vital component within a car's steering system - guides the wheel's movement in conjunction with the direction that the steering wheel is rotated, ensuring a precise steering response
  • REPLACE AND REFRESH: The USA Standard Gear Power Steering Gear Box is the cure for vague-feeling, worn out power steering in your vehicle - replace yours with a brand new, not refurbrished, product
  • LOCK-TO-LOCK TURNS: With 4.0 turns lock-to-lock, this power steering box offers a balanced and responsive steering experience that allows for smooth maneuvering in tight spaces while maintaining stability at higher speeds
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Car Axle Shafts

USA Standard Gear Spartan Locker for GM 12T & 12P, 30 Spline, Includes Heavy-Duty Cross pin Shaft

USA Standard Gear Spartan Locker for GM 12T & 12P, 30 Spline, Includes Heavy-Duty Cross pin Shaft Cover
  • Fits GM 12 bolt car and truck with 30 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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USA Standard Gear FAQs