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U-Bolt Plate for 3-1/2" Diameter, Round Trailer Axles with 1-3/4" or 2" Wide Springs
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Redline

U-Bolt Plate for 3-1/2" Diameter, Round Trailer Axles with 1-3/4" or 2" Wide Springs

Part Number: 117581
In Stock
$23.90
Retail:$25.69
You Save: 7%
Trailer Suspension Parts
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Plate uses 9/16" diameter U-bolts to attach your round, 3-1/2" diameter trailer axle to your 1-3/4" or 2" wide leaf springs. Designed for use with 8,000-lb Dexter axles. Great Prices for the best trailer suspension parts from Redline. U-Bolt Plate for 3-1/2" Diameter, Round Trailer Axles with 1-3/4" or 2" Wide Springs part number 117581 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (50)
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Redline Trailer Suspension Parts - 117581

Highlights

  • Fits 3-1/2" Round Axles: Correct match for 8,000-lb Dexter trailer axles.
  • Works with 1-3/4" or 2" Springs: Versatile fit for common leaf spring widths.
  • Uses 9/16" U-Bolts: Secures the axle firmly to the leaf springs.
  • 1/4" Thick Plate: Provides solid support to handle heavy trailer loads.
  • Hole Spacing 3-1/2" x 2": Aligns properly for a stable, square axle mount.
  • Pairs with Round U-Bolts (sold separately): Completes a strong axle-to-spring connection.
Made in USA

Features to know about

Solid Connection for Heavy Loads: 1/4" Thick Steel Plate Handles 8,000 lbs

A secure axle connection keeps your suspension working the way it should. This U-bolt plate is built 1/4" thick and designed for 8,000-lb Dexter axles, giving you the strength needed for heavy-duty setups. It’s made to clamp your 3-1/2" diameter round axle tight against the springs so everything stays lined up and stable under load.

Tight, Reliable Fit: Works with 1-3/4" or 2" Wide Leaf Springs

Whether your trailer uses 1-3/4" or 2" wide springs, this plate fits right. The holes are set 3-1/2" apart lengthwise and 2" apart crosswise (measured from the closest edges), matching the shape of the axle and spring spacing. That precise layout means your U-bolts slide in easily and pull down evenly for a snug, balanced hold.

Strong Mounting Setup: Uses Two 9/16" Diameter U-Bolts

When you’re tightening down an axle, the hardware needs to match the muscle of the job. This plate pairs with two 9/16" diameter round U-bolts (sold separately) to secure the axle to the leaf springs. The bolt size gives plenty of clamping force so you can torque everything down confident it’ll stay put mile after mile.

Built for Tough Roads: Keeps the Axle and Springs Aligned

Rough pavement, washboard roads, or heavy cargo can work hardware loose over time. This plate keeps the axle centered and the suspension aligned, preventing twist or shift that can wear parts unevenly. It’s a simple part that does a big job—holding your trailer’s foundation solid so it tracks straight and rides smooth.

Specs

Compatibility

  • Axle type: Round
  • Axle diameter: 3-1/2"
  • Leaf spring width: Works with 1-3/4" or 2" wide springs
  • Axle rating compatibility: Designed for use with 8,000-lb Dexter axles

Hardware Specifications

  • U-bolt diameter: 9/16"
  • Plate thickness: 1/4"
  • Hole spacing (long ways): 3-1/2" (measured from closest part of hole to closest part of other hole)
  • Hole spacing (short ways): 2" (measured from closest part of hole to closest part of other hole)
  • Number of U-bolts required: (2) 9/16" diameter, round U-bolts (sold separately)

117581 U-Bolt Round Axle Plate - 1-3/4" and 2" Springs - 3-1/2" Diameter Axle





Video of U-Bolt Plate for 3-1/2" Diameter, Round Trailer Axles with 1-3/4" or 2" Wide Springs
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Redline Trailer Suspension 117581 Review

Speaker 1: Today we're taking a look at a U-bolt plate for 3-1/2" diameter around trailer axles. This is used in conjunction with U-bolts to secure an axle to the leaf springs, which are mounted to the trailer frame. This attaches with two 9/16" diameter around U-bolts, which are sold separately and available at etrailer.com. It's designed to work with round trailer axles that have a diameter of 3-1/2". It's designed for use with 8,000 pound Dexter Axles, and works with 1-3/4" or 2" wide leaf springs, and it's made from a nice durable, thick, steel construction. That's going to do it for today's look at the U-bolt plate for 3-1/2" diameter around trailer axles..

Customer Satisfaction Score:

Ratings & Reviews

4.9

49 reviews
Review sort icon
Plate uses 9/16" diameter U-bolts to attach your round, 3-1/2" diameter trailer axle to your 1-3/4" or 2" wide leaf springs. Designed for use with 8,000-lb Dexter axles.

by:

Just what I needed



by:

These plates are built to provide long life and safety. We were impressed the minute we picked them up and observed they are made from this steel and well formed. Very pleased. They even match those on our 1969 Shasta camper.



by:

Item came quicker than expected, great quality.



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Easy install. Holding up well in salt water.



by:

Great product, very good price, quick ship…Rose was very helpful, I was ordering the wrong things and she helped me get it just right. Thank you



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Customer service and product excellent.



by:

Thanks for you help . Received at 2 pm thrusday and by 4 the trailer is back on the road. Thanks again for great service.



by:

all parts fit perfect. the sales staff at etrailer were absolute professionals. even the woman!!!awsome company!!!

thanks so much!!



by:

Seems sturdy, still working nice on my vintage trailer.



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This. Bracket. Are. Really n goodim. Using. This. On. My. Car. Hauler



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Fast shipping, excellent customer service



by:

Excellant product quality and communicatiion. Fast shipping. I have made several orders from ETrailer and all have been great.



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Easy to find online. Quick shipping, Perfect fit, Will do business again



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THANKS ETRAILER FOR YOUR ONLINE PRODUCTS ON MY ORDER



by:

1 Year in and still working flawlessly. Put around 2500 miles on the boat trailer since they have been installed.



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exactly as described



by:

The plates seem to be made well. I haven't had time to install them. So im hopeing they fit well. Shipping was poor through the postal service. They were supposed to be here on 9-2 but dident show up until 9-8. But I know you guys can't control Shipping. The product seems to be made well.



by:

thanks super fast shipping.. these plates worked perfect on my 1947 ford F1 truck I'am restoring. Joanne is the most pleasant sales rep. I've ever delt with.. Thanks Russ



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I’m giving a 2 because one of the items I ordered is covered in rust. I did receive the items I requested in a timely manner.



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Perfect fit.



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works good



by:

This was just what I needed. I did not find it anywhere else.



by:

Product arrived quickly and accurately content wise. The hangers are going to be tight fit on 1 3/4 wide springs (weld on and spread a little).
I immediately ordered from etrailer again as I only ordered 2 u bolts rather than the 4 necessary.



by:

My entire axle assembly turned to rust. I rebuilt the whole thing. I metal prepped and painted including mating surfaces.
Nice parts


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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Cole B
Installed by:
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Employee Wilson B
Updated by:
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