1-480-966-3040 Mon-Fri 8am to 5pm AZ
Performance & Aftermarket Car Parts - Vivid Racing Performance & Aftermarket Car Parts - Vivid Racing
Live Chat
Hello, Sign in My Account
Sign In
Wishlist
0
My Cart
My Cart $0.00
  See more parts for American Motors Eagle
Select the year of your American Motors Eagle:
USA Standard Gear Dana 30 Ring and Pinion Gear Set 3.73 Ratio Replacement ZG D30-373 - ZG D30-373

If you're diving into a gear swap, you want something that’s going to give you peace of mind during installation, right? That’s where the USA Standard ring and pinion sets come into play. These guys have a solid reputation, and they offer a wide range of options for both the common builds and those rare finds that can be a pain to source.

Now, let’s get into the nitty-gritty. This particular set is designed for the standard rotation Dana Spicer 30, and you won’t need a crush sleeve for the install, which is a nice touch. The ring gear has a diameter of 7.20 inches, and it comes with a 26 spline pinion. You’ll also find 10 ring gear bolts included, so you’re ready to roll without any extra trips to the hardware store.

The 3.73 gear ratio is a solid choice if you’re looking to enhance your torque while maintaining decent highway speeds. This setup strikes a great balance, whether you’re tackling trails or just cruising around town. Plus, it’s backed by a one-year warranty against manufacturer defects, which is always reassuring when you’re investing in your ride.

As for fitment, this gear set plays nice with a variety of vehicles. Whether you've got an American Motors Eagle from '80 to '87, a classic Ford Bronco from '66 to '71, or a Jeep CJ from the '70s and '80s, this set has you covered. It even fits some Volvos—who knew? Just check the list:

  • American Motors Eagle 1980-1987
  • Ford Aerostar 1986-1989
  • Ford Bronco 1966-1971
  • International Scout II 1971-1974
  • Jeep CJ5 1971-1983
  • Jeep CJ6 1966-1975
  • Jeep CJ7 1976-1986
  • Jeep Grand Cherokee 1993-1996
  • Jeep Scrambler 1981-1986
  • Jeep Wagoneer 1971-1973
  • Volvo 240 1990-1993
  • Volvo 242 1978-1984
  • Volvo 245 1975-1989
  • Volvo 265 1977-1981

So, if you’re looking to upgrade or replace your Dana 30 gear set, the USA Standard ring and pinion is a solid choice. It’s reliable, well-made, and fits a bunch of different vehicles. You’ll get the performance boost you’re after without breaking the bank.

Proposition 65

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

Vehicle
1980-1987
 American Motors Eagle
1986-1989
 Ford Aerostar
1966-1971
 Ford Bronco
1971-1974
 International Scout II
1971-1983
 Jeep CJ5
1966-1975
 Jeep CJ6
1976-1986
 Jeep CJ7
1993-1996
 Jeep Grand Cherokee
1981-1986
 Jeep Scrambler
1971-1973
 Jeep Wagoneer
1990-1993
 Volvo 240
1978-1984
 Volvo 242
1975-1989
 Volvo 245
1977-1981
 Volvo 265

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.

Check out these other great products