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USA Standard Gear Master Overhaul Kit for Mid 11 and Up GM/Chrysler 11.5 Inch AAM Differential
$594.89

USA Standard Gear ZK GM11.5-B Master Overhaul Kit

If you're diving into a differential rebuild for your 2011 and newer GM or Chrysler vehicle, the USA Standard Gear ZK GM11.5-B Master Overhaul Kit is your go-to solution. Designed specifically for 11.5-inch differentials, this kit ensures you have everything you need to complete your installation with confidence and precision.

Fitment

This overhaul kit is compatible with the following models:

  • Chevrolet Silverado 2500 (2011-2018)
  • Chevrolet Silverado 2500 HD (2019)
  • Chevrolet Silverado 3500 (2011-2018)
  • Chevrolet Silverado 3500 HD (2019)
  • GMC Sierra (2011-2019)
  • Ram 2500 (2011-2014 & 2021)
  • Ram 3500 (2011-2016)

What's Included?

This comprehensive kit features high-quality components to ensure a reliable rebuild:

  • Koyo bearings and races for optimal performance
  • 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
  • Gasket

Technical Notes

It's important to note that in mid-2011, the design for the pinion bearing underwent a change. The earlier design had a rear pinion race outer diameter (O.D.) of 4.125 inches, while the later design features an O.D. of 4.375 inches. The ZK GM11.5-B kit is designed to accommodate the 4.375-inch specification, ensuring a perfect fit for your differential.

Warranty

Rest easy knowing that this kit comes with a 1-year warranty against manufacturer defects, providing you with peace of mind as you tackle your installation.

Customer Feedback

Many truck owners have found this kit to be a game changer. For instance, a 2018 Chevrolet Silverado 2500 owner noted, "This overhaul kit made my differential rebuild straightforward. The Koyo bearings are top-notch, and I appreciated having all the necessary components included." Another 2016 Ram 3500 user shared, "Everything fit perfectly, and I had no issues during installation. Highly recommend for anyone looking to refresh their differential!"

Upgrade your differential with the USA Standard Gear ZK GM11.5-B Master Overhaul Kit and experience the difference in performance and reliability!

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Vehicle Make/Model
Chevrolet Silverado 2500 2011-2012, 2014, 2016-2017 Base
Chevrolet Silverado 2500 2013, 2015-2018 LS
Chevrolet Silverado 2500 HD 2011-2019 WT
Chevrolet Silverado 2500 HD 2011-2019 LT
Chevrolet Silverado 2500 HD 2011-2019 LTZ
Chevrolet Silverado 2500 HD 2015-2019 High Country
Chevrolet Silverado 3500 2011-2013, 2016-2018 Base
Chevrolet Silverado 3500 2015 WT
Chevrolet Silverado 3500 HD 2011-2019 LTZ
Chevrolet Silverado 3500 HD 2011-2019 LT
Chevrolet Silverado 3500 HD 2011-2019 WT
Chevrolet Silverado 3500 HD 2015-2019 High Country
GMC Sierra 2011-2012 Base
GMC Sierra 2011-2019 Denali
GMC Sierra 2013-2019 SLE
GMC Sierra 2013-2015 SLT
GMC Sierra 2014-2018 All Terrain
GMC Sierra 2019 AT4
GMC Sierra 1500 2011-2019 SLE
GMC Sierra 1500 2011-2013 WT
GMC Sierra 1500 2011-2013 SL
GMC Sierra 1500 2011-2013 Hybrid
GMC Sierra 1500 2011-2019 SLT
GMC Sierra 1500 2011-2019 Denali
GMC Sierra 1500 2011-2013 XFE
GMC Sierra 1500 2014-2019 Base
GMC Sierra 1500 2019 AT4
GMC Sierra 1500 2019 Elevation
GMC Sierra 1500 Limited 2019 SLE
GMC Sierra 1500 Limited 2019 Base
GMC Sierra 2500 HD 2011-2019 SLT
GMC Sierra 2500 HD 2011-2019 SLE
GMC Sierra 2500 HD 2011-2014 WT
GMC Sierra 2500 HD 2011-2019 Denali
GMC Sierra 2500 HD 2015-2019 Base
GMC Sierra 3500 HD 2011-2019 SLT
GMC Sierra 3500 HD 2011-2014 WT
GMC Sierra 3500 HD 2011-2019 SLE
GMC Sierra 3500 HD 2011-2019 Denali
GMC Sierra 3500 HD 2015-2019 Base
Ram 2500 2011 SLT Sport
Ram 2500 2011-2014 SLT
Ram 2500 2011, 2013 SXT
Ram 2500 2011-2014, 2021 Laramie Longhorn
Ram 2500 2011-2014 ST
Ram 2500 2011-2014, 2021 Laramie
Ram 2500 2011-2014 Outdoorsman
Ram 2500 2011-2014, 2021 Power Wagon
Ram 2500 2012-2014 Hemi Sport
Ram 2500 2012-2014 R/T
Ram 2500 2013-2014, 2021 Big Horn
Ram 2500 2013-2014, 2021 Lone Star
Ram 2500 2013-2014, 2021 Tradesman
Ram 2500 2014 Laramie Limited
Ram 2500 2021 SLT HD
Ram 2500 2021 HD Limited
Ram 2500 2021 Limited
Ram 2500 2021 Limited Longhorn
Ram 3500 2011-2016 ST
Ram 3500 2011-2016 Laramie
Ram 3500 2011-2016 Laramie Longhorn
Ram 3500 2011, 2013 SXT
Ram 3500 2011-2016 SLT
Ram 3500 2013-2016 Big Horn
Ram 3500 2013-2015 Lone Star
Ram 3500 2013-2016 Tradesman
Ram 3500 2014-2016 Laramie Limited
Ram 3500 2016 Limited

USA Standard Gear Banner

Who is USA Standard Gear?

USA Standard Gear is a company that supplies high-quality parts for the automotive industry. They are a one-stop-shop for all your drivetrain component needs and have one of the industry's most comprehensive parts list and inventory. Today, they are considered the leading supplier of these parts in the United States.

Drivetrain Experts

The company offers various parts ranging from axles, differential gears, lockers, limited slips, drivelines, and more. It is built by a team of craftsmen who has years of experience when it comes to assembling and modifying their own builds. This passion is what drives the company to create some of the best products in the market.

Quality In Every Product

All their parts are manufactured in their facility equipped with the latest and most sophisticated tools available today. They also have two high-tech testing labs to ensure that every product comes out with the company's quality.

The USA Standard Gear engineering team is constantly on edge trying to find ways to develop and further improve their products. That is why they can produce innovative parts that adapt to the changing trend in the automotive world.

Purchase USA Standard Gear at Vivid Racing

If you are in the market for reliable and top-notched drivetrain components, then USA Standard Gear is the brand for you. With years of experience developing their products, they have provided their customers with parts they could trust, whether it's a replacement component or an upgrade. 

To know more about USA Standard Gear, visit Vivid Racing and check out their list of offerings that fit your specific requirement.





USA Standard Gear® ("USA Standard") warrants the original retail purchaser that all USA Standard products will be free from defects in materials and workmanship for the periods shown herein. USA Standard makes no other warranty of any kind, express or implied. All other warranties, including but not limited to an implied warranty of merchantability or fitness for a particular purpose, are excluded. This warranty is offered provided that the USA Standard product has been installed and maintained in accordance with USA Standard instructions, and that it has not been subject to modification, accident, abnormal use or misuse. At USA Standard's discretion, this warranty may be voided if installation of USA Standard product(s) occurs on vehicles with tires that exceed USA Standard Maximum Recommended Tire Size.

Upon notification of a warranty claim, USA Standard shall investigate the claim of defect, and, in the event of a verified defect, shall, at their sole choice, either repair the defective product or replace it.

This warranty does not cover, and USA Standard shall not be liable for, incidental or consequential damages, including loss of time, road service charges, labor charges, inconvenience, loss of vehicle use, loss of revenues, or loss or damage to personal property (including loss or damage to vehicle parts due to the failure of the USA Standard product). In addition, this warranty does not cover, and USA Standard shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling USA Standard Gear® products, except where such agreements are within the provisions of this Warranty statement. Also, this warranty does not cover damage to the axle caused by or facilitated by failure of a non-USA Standard component.

This agreement offers you specific legal rights. You may also have other rights which vary from state to state.

USA STANDARD GEAR® WARRANTY BY PRODUCT
USA Standard Product Length of Warranty (From date of sale) NOTES
SpoolAs long as original purchaser owns vehicle in which Spool is originally installed It is normal for Spools to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for Spool to function properly without premature wear.
Rear Axle (1040/1050)Five (5) Years Covers parts for five years against manufacturing defects.
Front Axle (Series ZA W)Five (5) Years Five year warranty covering manufacturing defects and axle breakage. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however, USA Standard Gear reserves the right to either replace axle or refund original purchase price after the first warranty claim. USA Standard Gear (through RANDYS Worldwide Automotive) makes final determination on warranty considerations.
Ring & Pinion Gear SetOne (1) YearWarrantied against manufacturing defects for one (1) year.
Positraction DifferentialOne (1) Year Exclusions apply, does not cover premature clutch wear or abuse. It is normal for Positraction differentials to cause tire chatter, squeal, or scrubbing when vehicle is not moving in a straight line. Both rear tires must measure the same height from ground to top of wheel for differential to function properly without premature wear. Limited slip additive or appropriate friction modifier must be used with oil to reduce Positraction chatter.
Spartan LockerOne (1) YearWarrantied against manufacturers defects for one (1) year.
Install KitsOne (1) Year Includes ZBK, ZPK, and ZK. Covers parts for one year against manufacturing defects.
Spider Gear Kits (ZIK)One (1) YearOne year against manufacturing defects. Exclusions apply, does not cover clutch wear in limited slip differentials.
Replacement Driveshafts (ZDS)One (1) Year Warrantied against manufacturing defects for one (1) year.

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