Fits 1996-2006 Jeep Cherokee, Grand Cherokee, and Wrangler with the Dana 30 short pinion front differential.

The USA Standard Gear Master Overhaul Kit (ZK D30-TJ) provides all the essential components required for a professional-grade differential rebuild or gear installation. This comprehensive kit is designed to meet the specific tolerances of the standard rotation Dana Spicer 30 axle with a short pinion, ensuring all hardware is perfectly matched for the application.

Each kit features premium Koyo/Timken bearings and races to ensure long-term durability and quiet operation. USA Standard Gear conducts extensive research to bundle every necessary part—from shims to seals—minimizing downtime and ensuring you have everything needed on the bench to complete the installation correctly the first time.

• Manufacturer Part Number: ZK D30-TJ
• Differential Compatibility: Dana Spicer 30 Front (Standard Rotation, Short Pinion)
• Included Bearings: Koyo/Timken bearings and races
• Included Hardware: Pinion seal, axle seals, complete shim kit, ring gear bolts, pinion nut, and crush sleeve
• Installation Accessories: Oil baffles, slingers, thread locker, marking compound with brush, and gasket

Fits select 2001-2018 Chrysler Aspen, Dodge Dakota, Durango, Ram 1500, and Mitsubishi Raider models with the 9.25-inch rear differential.

The USA Standard Gear ZK C9.25-R-B Master Overhaul Kit is a comprehensive solution for technicians and DIY builders performing a complete differential rebuild or ring and pinion gear swap. By consolidating every necessary component into one package, this kit eliminates the downtime of searching for individual shims, seals, or hardware during an install.

Built for durability and precise tolerances, this kit features premium Koyo and Timken bearings and races. These high-grade components are essential for maintaining proper pinion depth and carrier preload, ensuring quiet operation and long-term reliability under the high-torque conditions typical of Chrysler 9.25-inch applications.

• Fits Chrysler 9.25" rear differentials
• Uses premium Koyo and Timken bearings and races
• Comprehensive kit for ring and pinion installation
• High-quality seals and hardware for a leak-free finish
• Manufacturer Part Number: ZK C9.25-R-B

Kit Includes: Carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush, and gasket.

Fits select 1975-2004 Chrysler, Dodge, Jeep, and Plymouth models equipped with the Chrysler 8.25-inch differential.

The USA Standard Gear Master Overhaul Kit (ZK C8.25-B) provides all the necessary components for a comprehensive differential rebuild or gear ratio change. This kit utilizes premium Koyo and Timken bearings and races to ensure precise tolerances and long-term reliability. Designed to eliminate the guesswork, this comprehensive kit includes the high-wear parts and specialized hardware required to achieve proper bearing preload and gear tooth contact patterns during installation.

• Premium Koyo/Timken carrier bearings and races
• Pinion bearings and races
• High-quality pinion seal and pinion nut
• Complete shim kit for professional setup
• Ring gear bolts and crush sleeve
• Gasket, thread locker, marking compound, and applicator brush
• Manufacturer Part Number: ZK C8.25-B

Fits select 1997-2025 Ford F-150, F-250, Expedition, Transit-150/250/350, E-150/250, and Lincoln Navigator/Mark LT with the Ford 9.75" open differential.

The USA Standard Gear Standard Spider Gear Set is a complete internal component replacement kit designed to restore the functionality and reliability of your vehicle's open differential. Over time, factory spider gears can develop wear on the teeth or thrust surfaces, leading to excessive play and drivetrain noise. This kit replaces those worn components with precision-manufactured gears, ensuring proper power distribution between the wheels during cornering.

Each kit is produced using high-quality materials to meet or exceed original equipment standards for durability and fitment. By replacing the entire internal gear set including the cross pin and washers, you ensure that all mating surfaces are new, providing a longer service life compared to replacing individual components.

• Fits Ford 9.75" open differential housings
• Precision-manufactured side gears (2) and pinion gears (2)
• Includes hardened cross pin shaft and cross pin bolt
• Complete set of spider gear thrust washers included
• Engineered for direct replacement of factory internal gears
• Manufacturer Part Number: ZIKF9.75-S-34

Fits select 2011-2017 Ford E-150, F-150, and Transit-150/250/350 models with the 9.75-inch rear differential.

USA Standard Gear Bearing Installation Kits (MPN ZBKF9.75-D) are designed for professional builders and shops that already have an inventory of shims and are looking for a cost-effective alternative to a full Master Overhaul Kit. This kit provides the critical high-wear components required to properly install a new ring and pinion gear set, ensuring your differential operates with the correct tolerances and reliability. Each kit features premium Koyo bearings and races, known for their precise fit and long-term durability in heavy-duty truck and van applications.

• Fits Ford 9.75-inch differentials
• Uses premium Koyo bearings and races
• Includes carrier bearings and races
• Includes pinion bearings and races
• Includes pinion seal and pinion nut
• Includes crush sleeve, marking compound, and brush
• Manufacturer Part Number: ZBKF9.75-D

Fits select 2007-2018 Jeep Wrangler and Wrangler JK models with the Dana 44 non-Rubicon rear differential.

The USA Standard Gear Bearing Installation Kit (ZBKD44-JK-STD) is a cost-effective solution for professional builders and shops who already maintain a shim inventory but require a complete set of high-quality bearings and hardware for a differential rebuild or gear swap. This kit focuses on long-term reliability by utilizing premium Koyo bearings and races, ensuring your ring and pinion set is supported by components that meet or exceed OE tolerances.

By replacing worn carrier and pinion bearings during service, you prevent premature gear failure and maintain proper housing alignment. This kit includes all critical small parts and seals necessary for a standard installation on the JK platform Dana 44 rear axle.

• Premium Koyo bearings and races for high durability
• Includes pinion seal and pinion nut
• Application-specific crush sleeve included for proper pinion preload
• Complete with marking compound and brush for gear pattern verification
• Manufacturer Part Number: ZBKD44-JK-STD

Kit Includes: Carrier bearings and races, pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound, and brush.

Fits 2007-2018 Jeep Wrangler and Wrangler JK models with Dana 30 front axles.

USA Standard Gear Bearing Installation Kits are designed for professional builders and shops who maintain an inventory of shims and require a cost-effective solution without sacrificing component quality. This kit provides the essential high-wear items needed when installing a new ring and pinion gear set or refreshing a noisy differential.

To ensure long-term reliability and precise tolerances, this kit features premium Koyo bearings and races. Every component is selected based on extensive application research to ensure a proper fit for the Jeep JK Dana 30 front housing.

• Manufacturer Part Number: ZBKD30-JK
• Bearing Brand: Koyo bearings and races
• Included Components: Carrier bearings and races, pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound, and brush
• Application: Designed specifically for Dana 30 front differential service

Fits select 1980-2016 American Motors, Chevrolet, Dodge, Ford, GMC, International, Isuzu, and Jeep vehicles (5.9L).

The Yukon Gear Zip Locker Solenoid Valve is a critical replacement component for your air-operated traction system. This solenoid acts as the electronic gateway, managing the air pressure delivery required to switch your differential from an open carrier to 100% mechanical lockup. Built to handle the rigors of off-road use, it ensures that your Zip Locker engages and disengages precisely when commanded.

• Genuine Yukon Gear replacement solenoid valve
• Specifically engineered for the Zip Locker air-operated differential line
• Facilitates on-demand driver-controlled traction
• Durable construction for reliable pneumatic performance
• Manufacturer Part Number: YZLASV-01

Fits select 1966-2006 Jeep, Ford, Volvo, and American Motors vehicles equipped with a Dana 30 or AMC Model 35 differential. This genuine Yukon Gear & Axle seal housing is a direct replacement component for the Yukon Zip Locker air-operated traction system.

As the interface for air delivery within the differential, the seal housing is critical for maintaining the pressure required to switch from an open carrier to 100% lockup. This assembly ensures the air-actuated piston operates smoothly and remains leak-free under high-torque off-road conditions. Each housing is precision-machined for exact fitment and includes the necessary O-rings to restore your locking differential to peak performance.

• Manufacturer Part Number: YZLASH-02
• Designed specifically for Yukon Zip Locker air lockers
• Compatible with Dana Spicer 30 and AMC Model 35 differentials
• Includes high-quality O-rings for a reliable air-tight seal
• Precision-machined steel construction for durability

Fits select 1980-2016 American Motors, Chevrolet, Dodge, Ford, GMC, International, and Jeep vehicles (5.9L).

The Yukon Gear Zip Locker Bulkhead Fitting Kit provides the essential components required to maintain or repair the air supply line for your air-operated locking differential. This kit ensures a reliable, leak-free pneumatic seal where the air line passes through the differential housing, allowing the Zip Locker to transition seamlessly from an open carrier to 100% lockup for maximum traction.

• Replacement hardware for Yukon Zip Locker air-operated differentials
• Maintains system pressure for reliable locker engagement
• Engineered for high-pressure pneumatic automotive environments
• Manufacturer Part Number: YZLABF-KIT

Kit Includes:

• Bulkhead fitting
• Outer fitting
• O-ring

Fits select 1955-1988 Ford, Lincoln, and Mercury vehicles including Bronco, F-100/F-150, Mustang, Cougar, and Econoline equipped with a 9-inch rear differential.

This Yukon Gear & Axle U-bolt kit provides a high-strength alternative to standard pinion straps, ensuring a more secure connection between the universal joint and the pinion yoke. Engineered for both 1310 and 1330 series u-joints, this kit is an essential upgrade for street, racing, and heavy-duty off-road applications where drivetrain reliability is critical.

• Manufacturer Part Number: YY UB-F9-1310
• Fits U-joint sizes: 1310 and 1330
• Optimized for Ford 9-inch differential yokes
• Includes (2) heavy-duty U-bolts and (4) mounting nuts
• Replaces worn or stretched factory hardware

Fits select 1960-2013 Chevrolet, Dodge, Ford, GMC, Jeep, and Plymouth models.

The Yukon Gear and Axle YY UB-004 U-Joint U-Bolt Kit is a critical hardware solution for securing the driveline. Designed to replace worn or stretched factory hardware, these U-bolts ensure the 1350 or 1410 series u-joint remains properly seated in the pinion yoke, preventing unwanted vibration and drivetrain failure. Whether you are performing a standard axle service or a heavy-duty off-road build, this kit provides the precise fit and clamping force required for reliable torque transfer.

• Manufacturer Part Number: YY UB-004
• Compatible U-Joint Series: 1350 and 1410
• Thread Diameter: 3/8 inch
• Width: 1-11/16 inch
• Construction: High-strength steel for street and performance applications
• Kit Includes: (2) U-bolts and (4) matching nuts

Fits select 1963-2009 AMC, Chevrolet, Dodge, Ford, and GMC vehicles including Camaro, Corvette, F-150, and Ram 1500 (5.9L).

The Yukon Gear & Axle 1330 u-joint u-bolt kit (MPN: YY UB-003) is engineered to replace factory pinion yoke straps with a higher-strength fastening solution. These u-bolts provide more consistent and secure clamping force on the u-joint bearing caps, which is essential for high-torque applications in street, racing, and off-road environments. This kit is specifically designed for use with 7260 and 7290 billet pinion yokes and fits a variety of common axle housings including the AMC Model 20 and Dana Spicer 30/44.

• U-Joint Series: 1330
• Hardware Dimensions: 5/16" thread diameter x 1-9/16" width
• Housing Compatibility: AMC Model 20, Dana Spicer 30, Dana Spicer 44
• GM Compatibility: GM 8.2" and 12-bolt passenger car/truck; 1963-1979 Corvette
• Manufacturer Part Number: YY UB-003

Includes: Two (2) u-bolts and four (4) nuts.