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U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs

U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs

Item # 116308
Our Price: $16.76
You Save: 6%
Trailer Leaf Spring Suspension
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Shipping Weight: 1.26 lbs
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Plate uses 9/16" diameter U-bolts to attach your square, 1-3/4" wide trailer axle to your 1-3/4" wide leaf springs. Great Prices for the best trailer leaf spring suspension from Redline. U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs part number 116308 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (44)
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Redline Trailer Leaf Spring Suspension - 116308

  • Camper
  • Car Hauler
  • Utility Trailer
  • U-Bolt Plates
  • Square Axle - 1-3/4 Inch
  • 2000 lbs
  • 9/16 Inch Diameter
  • Redline

Plate uses 9/16" diameter U-bolts to attach your square, 1-3/4" wide trailer axle to your 1-3/4" wide leaf springs.


  • Used with U-bolts to secure axle to leaf springs, which are mounted to the trailer frame
  • Attaches with (2) 9/16" diameter, square U-bolts (sold separately)
  • Fits square trailer axles that are 1-3/4" wide
  • Works with 1-3/4" wide leaf springs

116308 U-Bolt Square Axle Plate - 1-3/4" Springs - 1-3/4" Wide Axle

Video of U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Redline Trailer Suspension 116308 Review

Today we'll be reviewing part number 116308. This is Redline's U-bolt plate for 1 3/4 inch square trailer axles with a 1 3/4 inch wide springs. It's going to be used with U-bolts to secure the axle to the lead springs which are mounted to the trailer frame. It's going to attach with two 9/16 inch diameter square U-bolts. They are going to be sold separately. If you need some of those, you can find those right here at using part number 175130.

It will fit square trailer axles that are 1 3/4 inches in width and it will work with 1 3/4 inch wide lead springs. The overall measurements of this plate, it's going to measure 5 1/4 by 3 1/2 inches. Again, the diameter of these holes here on the corners are going to measure 9/16 of an inch. If you need the U-bolts that are designed to work with this you can use part number 175130, and again they are sold separately. That's going to do it for today's review of part number 116308. This is Redline's U-bolt plate for 1 3/4 inch square trailer axles with 1 3/4 inch wide springs.


Customer Satisfaction Score:

Customer Reviews

U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs - 116308

Average Customer Rating:  4.8 out of 5 stars   (44 Customer Reviews)

Plate uses 9/16" diameter U-bolts to attach your square, 1-3/4" wide trailer axle to your 1-3/4" wide leaf springs.


Had a hard time finding the u bolts until I found They had exactly what I was looking for. The quality of the u bolts, nuts and the spring plates I purchased from them was great. Much better than all the wrong sized ones that I could locate locally. I would definitely buy from them again. Their communication was good as well.


They the ONLY ones I found that had the right size(apparently, 1 3/4" square axles are not common) as well as the mounting plates at a VERY reasonable price. I needed them quickly, paid a little extra in shipping, got them this morning, and finished the tandem axle trailer rebuild in early afternoon.
Noticed the mounting plates were a full 1/4' thick, much stronger than my old 3/16" plates!
This is he type of company one should do business with; thank you "etrailer" and your entire staff

Excellent wish there were more companies like yours
BRUCE H - 01/19/2018


Thanks for asking. I was very pleased with your products and service. I built my trailer suspension with the measurements and technical info from your web sight. Everything bolted right up. I finished the trailer on Friday afternoon, loaded it up Friday night, and pulled it half way across the country on Saturday and Sunday.
You will be the first place I look when I need trailer parts! *


It fit perfectly for replacing the broken ubolt and plate in my very old utility trailer.


Product is good, no problems with it. Ordered some more a couple of months ago.


etrailer is a 5/5 star E-business company.Transactions and delivery to Anchorage , AK seems to be regarded as a foreign country by a lot of online businesses. stands far apart from this attitude and approach. Online sales response and reasonable shipping rates continues to be outstanding.


All the parts are well made i used them on a 1960 Apache chief camper i put a two inch lift on camper. THANKS


I searched through many sites to get these square bolts and plates for a square 1-3/4" axle. Must be a fairly rare axle. Nobody had them until I got to Thanks!


Plate good, receiver plug good, U bolt too long, leaf spring different 1 bolt reversed, tires not on other trailer yet.


Shipping was upgraded from regular ground to 3-5 day ground free of charge without me asking! Communication via e-mail updates were very timely. Parts were all as indicated and fit perfectly. The old stock trailer is back on the road. Overall this was an excellent transaction. I will definitely use etrailer again.
Rob J.
Big Rapids, MI


etrailer has once again lived up to and exceeded my expectations. i had questions, Cathy was very helpful, and quite knowledgeable, i had my questions answered, and was sent additional information for install and general info as well in a matter of minutes, and once read, i placed my order, i received shipping info very quickly, and my order was shipped lightning fast. once again, i would have to give etrailer and all its employees, an AAAAA+++++ rating. will do business with many more times, if you are looking for any product for trailers and more you could imagine, at a unbeatable price, then do business with etrailer!!!!!!!


Excellent, the u-bolt plate was just what I needed to repair my axle.
Bent at the correct height so the spring bolt doesn't contact the axle.


Parts arrived on time and exactly what I ordered But they were the wrong partisan, my fault there. What I really needed were 1 1/2 u bolts and plates.


Great product and excellent service and follow up. My only comment would be to sell with lock washers as part of the set if possible.
Thanks much


We were very happy with your friendly and efficient service. We like the wide variety of the products you carry.


Product was easy to order fast delivery vidioes to make sure of the right parts one of the best internet site I have ordered from ever


The trailer with your updates operates and looks like a new one...


Just what I needed and arrived a few days after ordering. Product is perfect for 1 3/4" square axle and 1 3/4" springs


Worked great, very pleasant company to work with, great products , great communication, thank you


I needed a heavy plate, so I doubled it, this held up but my bolts did not.
I was using on a plow, I was satisfied.


I was given a delivery date upon completing my order and wasn't expecting delivery so soon. The package arrived almost a week in advance and everything was as ordered. Great quality too. Thanks for great service.


Great products, good quality, wonderful communication


The product came exactly as described, fast shipping, I was very pleased with service!


Great quality. Heavy duty and a perfect fit, thanks


Fits and works exactly as expected

Show More Reviews

See what our Experts say about this Redline Trailer Leaf Spring Suspension

  • What Drill Bit Size to Use to Install Redline Replacement Trailer Axle U-Bolt with Nuts # 175130
    Since the diameter size of the posts on this u-bolt is 9/16-inch you can ideally use a 9/16-inch or 5/8-inch bit (or even a 1/2-inch bit if you have the room to move the drill around enough to ream the hole to the required size). In either case you will want to ensure that the bits you are using are intended for drilling in the material on your trailer. Please refer to the photo provided which shows the dimensions of this item. Often it is easier to start a smaller-diameter pilot hole,...
    view full answer...
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  • U-Bolts for 1-3/4 Inch Square Axle
    For a square axle that is 1.75" wide, you would want the Replacement U-Bolt with Nuts for 1-3/4" Wide, Square Trailer Axles # 175130 along with the U-Bolt Plate for 1-3/4" Square Trailer Axles with 1-3/4" Wide Springs # 116308. I have added links to video reviews of both products for you.
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  • U-Bolt Plate Recommendation for Use with U-Bolt # 381344UB
    Yes, the mounting plate part # 116308 that you referenced is a confirmed fit for the U-bolt part # 381344UB that you referenced.
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  • Replacing Slipper Springs on Magic Tilt B16W Boat Trailer
    The best way to determine the length of the slipper spring you will need for your trailer is to measure the spacing, center to center, of the spring hangers. If this spacing is approximatley 23 inches, we have a couple of springs that can work well for you. If your spacing is different, feel free to let me know and I will see if we have a spring that will work for you. If your spring hanger spacing is 23 inches, a great replacement slipper spring is the SP-179275 4-Leaf Slipper Spring,...
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  • Can Round Trailer Axle be Replaced with Square Trailer Axle
    Yes, you can replace a trailer's round axle with a square axle as long as the weight capacity is appropriate. You will need a new U-bolt kit to connect the axle: 1-1/2 inch square axles # CE23102 1-3/4 inch square axles # 175130 for the U-Bolts and # 116308 for the plate 2 inch square axles # CE23103
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  • Replacing Inverted Leaf Spring Suspension on Old Utility Trailer
    The first thing you will want to do is to remove the current springs from the frame and the axle. You can still use your axle if it is in good working order, but you will also want to remove any hardware welded to the axle. To install leaf springs, you will first want a hanger kit. For your single axle trailer, I recommend Redline's Single-Axle Trailer Hanger Kit for Double-Eye Springs # APS1. This hanger kit will have a 1-1/2 inch drop for the front hanger, and a 7/8 inch drop for the...
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  • Bolt Hole to Bolt Hole Measurements for 2,000 lb Coupler for 2 Channel and 1-7/8 Hitch Ball
    I took a look at each of the 2,000 lb trailer couplers that fit a 2" channel and connect to a 1-7/8" hitch ball, and none of them have bolt hole to bolt hole measurements of 1-1/4". The Fulton Fas-Lok Coupler # E112000340 and Channel Tongue Trailer Coupler # CT-2001-Z both have 2-1/4" on center measurements and the Dutton-Lainson Coupler # DL23870 measures 2-1/2" from bolt hole to bolt hole. The 1-1/4" bolt hole to bolt hole measurement you have is going to be too small for any of the...
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  • Switching From Slipper Springs to Double-Eye on a Single 2K Axle Trailer with Square Axle
    To switch to double-eye spring suspension I recommend getting parts individually since the u-bolts cannot be swapped out of kits. The spring in the kit is # SP-169275. We have a few different u-bolt kits for square axles including # CE23102 for 1-1/2 inch square axles. For a 1-3/4 inch square axles you can use u-bolt # 175130 and plate # 116308. And for 2 inch square axles we have # CE23103. You will also need a new hanger kit since double-eye springs use different hangers than slipper...
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  • Suspension Replacement For Stock Trailer With 26 Leaf Springs
    To refurbish the suspension on your 1970 Champ Stock Trailer you will need a handful of items. For a suspension kit with equalizers order the etrailer # e99ZR kit including 2 standard steel equalizers where width is 7-3/4” from center of mounting hole to center of other mounting hole. Includes bolts and lock nuts sized for 1-3/4” wide springs. Suspension kit does not have the size shackle straps that you need so you will want to order 8 TruRyde # TRSL275 straps measuring 2-3/4” on center. For...
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  • Can Unique Leaf Springs be Replaced on a Very Old Trailer
    I believe the hubs are for 2,000 or 2,200 pound agricultural axles which is why the springs look so different. These hubs are designed for very low speed applications (5 to 10 miles per hour according to HADCO) so if you plan on going faster than that you will need to look at replacing the axle and hubs. You could use 2 of spring # SP-219275. Each spring has a capacity of 1,250 pounds. If a new hanger kit is needed you can use # APS1. When used with spring SP-219275 the center to center...
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  • Replacement U-Bolt Kit, Leaf Springs, Bolts and Shackles for 68 Aristocrat Lo Liner Trailer
    Installing the U-bolts and plate like that would be fine, but I would recommend putting the plate on the leaf springs and running the U-bolts around the axle instead. The good news is you're replacing them so you can make that change when you install them. Once you have your axle measurements we do have some kits you could use. If it is a 2" square axle the # CE23103 or for a 1-1/2" square axle the # CE23102. If it is 1-3/4" you will need the # 175130 along with the # 116308. Since you...
    view full answer...
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Info for this part was:

Employee Kathleen M
Video by:
Kathleen M
Employee Cole B
Installed by:
Cole B

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