E348-22 | GM U-Bolt Bottom Plate
+1-989-755-0561 1-800-358-4751

U-Bolt Bottom Plate | GM | Rear Spring

SKU E348-22

20+ In Stock as of 1/20/2022 11:52:05 PM EST.

GM U-Bolt bottom plate. Replaces 338-833, 12000 and 3996593.

Product Specs for Automann E348-22

  • Application:GM
  • Dayton Number:338-833
  • Flagg Number:E348-22
  • Gaumers Number:12000
  • GMC Number:3996593
  • Note:Rear spring
  • Manufacturers Part Number:3996593
  • MPN: E348-22
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Automann E348-22 Details

Customer Q&A - Automann E348-22

this U-bolt bottom plate can be used on a 3" GM axle? or it can be used on major axle diameter only?

This u-bolt bottom plate is meant for 3.25" around axle tubes. Using this on a 3" axle is not advised as it may not be secure and allow unwanted axle movement. A part number M22586 would be a better option for a 3" axle.

I have a 71 gmc c1500 are these in specs for it

These bottom plates fit many Chevrolet and GMC trucks from 1965 - 2016. The only way to confirm fit for your application would be to measure your current bottom plate and compare dimensions to this plate.

Will this plate fit a 1973 chevy c30

Yes this u-bolt plate will work on the 1969 - 1974 c30 with u-bolts down. We recommend double checking the measurements to verify. Feel free to call us at 1-800-358-4751 if you have any additional questions.


Automann is premier global distributor and manufacturer of aftermarket truck and trailer chassis parts. Automann offers more than 10,000 products for heavy duty truck and trailers ranging from air brake & wheel to suspension components and just about everything in between.

Automann is headquartered in Somerset, NJ and operates a satellite west coast distribution facility in Ontario, CA.Formed in 1994 Automann has evolved into a leader in the heavy duty aftermarket. Automann is committed to the long term success of its distributors and continues to invest in expanding its product offering and improving its services.

At TruckSpring we have been working with Automann since their beginning. We stock a complete line of Automann heavy duty truck parts and have a great working relationship with Automann.

Automann Products Warranty

1 Year Limited Warranty

On all Automann products against defects in workmanship or material for a period of 1 year.

What the warranty does not cover

Damage from accidents, corrosion, improper installation, incorrect applications, overloading, and custom applications that are not specified under the OEM cross references. This warranty does not cover loss of freight, loss of profit, equipment, or personal downtime.

How to get service

If an Automann product failure results from a manufacturer defect, contact us at Michigan Truck Spring for support. You can contact us by phone at 1-800-358-4751 or by using our contact form.

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