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  See more parts for Chevrolet Blazer
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USA Standard Gear NP435 Transmission Bearing/Seal Kit for 68-72 Chevy/GMC Truck/Suburban & 69-87 F-Series/Bronco - ZMBK127

When it comes to keeping your manual transmission running smoothly, USA Standard Gear has you covered with a solid selection of OEM and aftermarket parts. They've been in the game for over 50 years, so you know they’ve got the know-how. Whether you’re working on a classic from the '60s or a more recent model, this brand has a reputation for quality that stands the test of time.

Take a look at their Transmission Bearing and Seal Kit for the NP435 model. This kit is built tough with a 10.75-inch long main case made from cast iron, ensuring it can handle the rigors of off-road or everyday driving. The 8-bolt aluminum top cover adds to the durability while keeping the weight manageable. Inside, you’ll find a ball-style rear mainshaft bearing and a tapered input bearing, both designed to give you a smooth shift every time. Plus, there's a PTO cover conveniently located on the right side of the case, making it easy to adapt for whatever you need.

This kit isn’t just about toughness; it’s also about fit. It’s compatible with a range of vehicles, including:

  • 1969-1972 Chevrolet Blazer
  • 1968-1972 Chevrolet C10 Suburban
  • 1968-1972 GMC K25/K2500 Pickup
  • 1969-1987 Ford Bronco
  • And many more—over 50 applications in total!

If you’re restoring a classic or just need to replace some worn-out parts, this Transmission Bearing and Seal Kit is a smart choice. It’s sold as a complete kit, so you won’t be hunting for missing pieces. When you think about quality and reliability, USA Standard Gear is a name you can trust.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1969-1972
 Chevrolet Blazer
1968-1972
 Chevrolet C/K 10
1968-1972
 Chevrolet C/K 20
1968-1972
 Chevrolet Suburban
1969-1974, 1980-1987
 Ford Bronco
1984-1987
 Ford E-350
1975-1983
 Ford F-100
1975-1986
 Ford F-150
1975-1987
 Ford F-250
1975-1987
 Ford F-350
1968-1972
 GMC C/K 15
1968-1972
 GMC C/K 25
1970-1972
 GMC Jimmy

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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