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  See more parts for Chevrolet Blazer
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USA Standard Gear Getrag 5-Speed Transmission Bearing/Seal Kit with Synchro Rings for 1988-91 Chevrolet/GMC C1500/C2500 K1500/K2500 S10/S15 Blazer/Jimmy - ZMBK235AWS

If you're diving into a manual transmission project, USA Standard Gear has got your back with a solid lineup of OEM and aftermarket parts. Seriously, they’ve been in the game for over 50 years, so they know a thing or two about what makes a transmission tick. Whether you're fixing up a classic from the '60s or tackling something more recent, their inventory covers a ton of applications, and you can bet they have what you need.

Now, let’s talk about the Transmission Bearing and Seal Kit with Synchros. This kit is a game-changer for anyone working on a Getrag 5-speed transmission. It comes packed with everything you need to get your gears shifting smoothly again. You’ll find synchronizer rings in there, which are crucial for smooth gear changes, and trust me, you don’t want to skip on those.

Here’s the breakdown: the kit includes 1.020-inch I.D. counter shaft bearings and 1.3-inch wide input bearings, which are built to last. The output bearings are 0.9 inches, and you get single-piece 1st-2nd gear synchro rings, making it a breeze to get your transmission back in shape. Just a heads up, there’s no reverse synchro ring included, so keep that in mind if you’re planning a full overhaul.

This kit fits a range of vehicles, including:

  • 89-91 Chevrolet C1500
  • 89-91 Chevrolet C2500
  • 89-91 Chevrolet K1500
  • 89-91 Chevrolet K2500
  • 1990 Chevrolet S10
  • 1990 Chevrolet S10 Blazer
  • 89-91 GMC C1500
  • 89-91 GMC C2500
  • 89-91 GMC K1500
  • 89-91 GMC K2500
  • 1990 GMC S15
  • 1990 GMC S15 Jimmy

This kit is sold as a complete package, which means you won’t be hunting down individual parts. It’s all there, ready to go, so you can focus on getting your ride back on the road. If you’re looking for quality and reliability, USA Standard Gear is where it's at.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
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Vehicle
1990
 Chevrolet Blazer
1989-1991
 Chevrolet C/K 1500
1989-1991
 Chevrolet C/K 2500
1990
 Chevrolet S10
1989-1991
 GMC C/K 1500
1989-1991
 GMC C/K 2500
1990
 GMC Jimmy
1990
 GMC S15

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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