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U-Bolt Plate for 3" Round Axle - 2" Wide Springs - 9/16" Bolts - Galvanized
etrailer Installation
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Redline

U-Bolt Plate for 3" Round Axle - 2" Wide Springs - 9/16" Bolts - Galvanized

Part Number: 117521-G
In Stock
$15.39
Retail:$17.38
You Save: 11%
Trailer Suspension Parts
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Plate works with 9/16" diameter U-bolts (sold separately) to attach your 3" round trailer axle to your 2" wide leaf spring. Galvanized steel is sturdy and rust resistant, making it great for boat or snowmobile trailers. Great Prices for the best trailer suspension parts from Redline. U-Bolt Plate for 3" Round Axle - 2" Wide Springs - 9/16" Bolts - Galvanized part number 117521-G can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (50)
  • Q & A (0)
  • Videos (1)
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Redline Trailer Suspension Parts - 117521-G

Highlights

  • Handles 5,200 lbs to 7,000 lbs: Built strong to clamp heavy trailer axles securely.
  • Fits 3" Round Axles: Matches the common axle diameter on mid to large trailers.
  • For 2" Wide Springs: Keeps the leaf springs aligned and tight under load.
  • Uses 9/16" U-Bolts (sold separately): Standard sizing for a snug, reliable fit.
  • Galvanized Steel Construction: Resists rust for long life on boat and snow trailers.
  • Secures Axle to Suspension: Holds axle firmly to reduce shifting and wear over time.
Made in USA

Features to know about

Solid Mounting for Heavy Axles: Galvanized Steel U-Bolt Plate Holds Tight

Keeping a 3" round axle locked to a 2" wide leaf spring takes strong hardware. This U-bolt plate from Redline ties your suspension together with a solid, heavy-duty connection. It’s built to handle 3,500-lb, 6,000-lb, and 7,000-lb axles while maintaining a stable, secure mount that keeps the trailer tracking straight under load.

Built to Last in Wet Conditions: Galvanized and Zinc-Plated Steel Resists Rust

Corrosion can wreck suspension parts fast, especially around water or road salt. The galvanized, zinc-plated steel construction stands up to moisture and grime, making it a great fit for boat and snowmobile trailers that see regular exposure to the elements. The finish keeps rust at bay so the plate stays strong and dependable season after season.

Easy Integration with Standard Hardware: Works with 9/16" U-Bolts

You don’t need special hardware to get this plate in place. It’s made to pair with two 9/16" diameter U-bolts (sold separately), so it fits into most standard setups. The spacing and layout are set up for clean alignment, giving you a straightforward install and a solid clamp every time.

Reliable Connection for Smooth Suspension Travel

A steady axle connection keeps your suspension moving the way it should. This plate acts as a key piece of the system, distributing the load evenly between the axle and spring. The result is a dependable, smooth ride that protects your gear and keeps the trailer under control on every trip.

Specs

Compatibility

  • Axle diameter: 3"
  • Spring width: 2"
  • Axle capacity: 3,500-lb, 6,000-lb, or 7,000-lb

Hardware Requirements

  • Required U-bolts: (2) 9/16" diameter (not included)

Construction

  • Material: Galvanized steel
  • Finish: Zinc-plated
  • Corrosion resistance: Heavy duty and rust resistant

117521-G Redline Galvanized U-Bolt Plate for 3" Round Axles - 2" Wide Leaf Springs - 9/16" Diameter U-Bolts





Video of U-Bolt Plate for 3" Round Axle - 2" Wide Springs - 9/16" Bolts - Galvanized
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Redline Trailer Suspension Parts - U-Bolt Plates - 117521-G

Ratings & Reviews

4.8

50 reviews
Review sort icon
Plate works with 9/16" diameter U-bolts (sold separately) to attach your 3" round trailer axle to your 2" wide leaf spring. Galvanized steel is sturdy and rust resistant, making it great for boat or snowmobile trailers.

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.



by:

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



by:

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:

Seems sturdy, still working nice on my vintage trailer.



by:

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

thanks so much!!



by:

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



by:

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.



by:

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



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:

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



by:

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



by:

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



by:

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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OEM Quality



by:

Great website and delivery. Received in exactly the condition and time expected.



by:

THANKS ETRAILER FOR YOUR ONLINE PRODUCTS ON MY ORDER


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See what our Experts say about this Redline Trailer Suspension Parts

  • Replacement 9/16 U-Bolt Kit Options For A Dexter 7,000-LB Axle
    The U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles # APUBR-8 that you mention will fit just fine on your Dexter 7K axles, however these U-bolts are only 1/2" thick. Since you mentioned that you are wanting 9/16" thick U-bolts, I recommend taking a look at the: -U-Bolt Kit for Mounting 5,200-lb to 7,000-lb, Round Trailer Axles # APUBR-9, which measures 7-1/16" long, Or the, -3" Round Trailer U-Bolts 9/16" Diameter # SP01-080 with the U-bolt plate # 117521-G, which...
    view full answer...
  • Hole Spacing on Redline # 117521-G U-bolt Plate
    I pulled one of the # 117521-G U-Bolt Plates from the warehouse, and measured it for you. You can see the dimensions in the photo I've edited for you.
    view full answer...
    Image 1 for

Do you have a question about this Trailer Suspension Part?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Steven C
Installed by:
Steven C
Employee Lisa S
Written by:
Lisa S
Employee Wilson B
Updated by:
Wilson B

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