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Replacement U-Bolt Axle Mounting Hardware Kit - 3" Axles
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Lippert

Replacement U-Bolt Axle Mounting Hardware Kit - 3" Axles

$38.38
Retail:$66.28
You Save: 42%
Trailer Suspension Parts
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Replaces the U-bolts needed to install your axle on your RV or trailer. Fits 3" axle tubes. Great Prices for the best trailer suspension parts from Lippert. Replacement U-Bolt Axle Mounting Hardware Kit - 3" Axles part number LC27XV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (9)
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  • Videos (1)
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Lippert Trailer Suspension Parts

Highlights

  • Fits 3" Axle Tubes: Correct size for common 5.2K–7K trailer axles.
  • 7" Long U-Bolts: Gives full thread engagement for a tight, secure axle clamp.
  • 4" x 6-1/8" x 7/8" Plates: Distributes axle load evenly across the springs.
  • 1/2"-20 Flange Nuts: Lock in place to prevent loosening under vibration.
  • Complete Kit for One Axle: Includes 4 U-bolts, 2 plates, and 8 nuts for one setup.
  • Replaces Worn Mounts: Keeps your axle properly aligned for smoother towing.
Made in USA

Features to know about

Secure Axle Mounting You Can Count On: Fits 3" Axle Tubes

Keeping your axle tight to the leaf springs is key to stable towing. This kit includes (4) 3" U-bolts that clamp solidly around your 3" axle tubes so everything stays lined up and secure. It’s a dependable way to restore or upgrade your suspension setup without guesswork.

Strong and Balanced Connection: Heavy U-Bolt Plates Distribute the Load

Each kit comes with (2) 4" wide x 6-1/8" long x 7/8" thick U-bolt plates that spread pressure evenly across the spring pack. That solid steel connection helps prevent shifting, twisting, or uneven wear, keeping your suspension steady mile after mile.

Complete Hardware for One Axle: Everything You Need in One Box

No need to hunt for separate pieces. The kit includes (8) 1/2"-20 flange nuts to match the U-bolts, giving you all the hardware needed to mount a single axle. For tandem-axle setups, just use two kits to complete the job.

Built for Reliable Performance: Correct Length and Thread for a Strong Hold

The U-bolts measure 7" in total length, with 5" from the threads to the start of the bend and 1-7/8" of thread length. That sizing gives plenty of grip to tighten down firmly while leaving the right amount of threading for a secure, lasting connection.

Specs

Fitment

  • Fits: 3" axles
  • Axle tube diameter: 3"

Components Included

  • U-bolt plates: (2) 4" wide x 6-1/8" long x 7/8" thick
  • U-bolts: (4) 3" U-bolts
  • Flange nuts: (8) 1/2"-20 flange nuts
  • Kit includes: (2) Two XMC 4.0 x 6.150 x .8, (4) Four 3" U-bolts, (8) Eight flange lock nuts 1/2"-20

Manufacturer

  • Brand: Lippert

297429 Replacement U-Bolt Axle Mounting Hardware Kit - 3" Axles

Item # LC27XV





Video of Replacement U-Bolt Axle Mounting Hardware Kit - 3" Axles
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for What to Know About the Replacement U-Bolt Axle Mounting Hardware Kit

Hi, everybody, Andy here with etrailer.com and today we're gonna take a brief look at this replacement U-bolt axle mounting hardware kit. This is going to replace the U-bolts needed to install your three-inch axle on your RV or trailer and it includes everything that you see here on the table before me. You're gonna get these two U-bolt plates, and let me go ahead and give you the measurements of those plates while we're here. So the overall length, we are sitting right at 6 1/8 inches long, and the overall width, we're sitting right at four inches. And these plates are 7/8 inch thick. So you're gonna get two of those plates.

And these U-bolts, you will receive four of them and they are of course three inches wide. And then you're going to receive eight 3/8 inch by 24 flange nuts. So again, this is going to fit your three-inch axle tube. And that's gonna conclude our look today. I do hope that it was helpful for you.

Again, my name is Andy. Thank you for joining me.

Customer Satisfaction Score:

Ratings & Reviews

4.8

9 reviews
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Replaces the U-bolts needed to install your axle on your RV or trailer. Fits 3" axle tubes.

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10/10



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Heavy duty and perfect fit.



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These appear to be heavy duty and well made. I have not installed them yet due to waiting for additional parts.


9
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See what our Experts say about this Lippert Trailer Suspension Parts


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Mike S
Written by:
Mike S
Employee Andy C
Installed by:
Andy C

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