U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts
(38 reviews)
Price: $42.86
U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts
Retail:$65.13
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- All Info
- Reviews (38)
- Q & A (6)
- Videos (1)
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- Why etrailer?
Redline Trailer Leaf Spring Suspension
- U-Bolt Kits
- Axle Mounting Hardware
- Round Axle - 3-1/2 Inch
- 8 Inch Long
- 8000 lbs
- 9/16 Inch Diameter
- Redline
Mount your round, 3-1/2" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates and nuts included.
Features:
- Attaches trailer axle to leaf springs
- Includes:
- (4) 8" Long U-bolts (11-65)
- (2) U-Bolt plates for 1-3/4" or 2" springs (117581)
- (8) 9/16"-18 Hex nuts (916N)
- Spring seats required for mounting axle to leaf spring sold separately
Specs:
- Axle diameter: 3-1/2"
- Typical 8,000-lb axle
- Spring width: 1-3/4" & 2"
- Dimensions: see below
APUBR-35 U-Bolt Kit for 8,000-lb Round Trailer Axles
Item # APUBR-35
Video of U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Video Transcript for Redline Trailer Suspension - Leaf Spring Suspension - APUBR-35 Review
Speaker 1: Today, we're taking a look at U bolt kit for mounting 8000 pound round trailer axles. This kit attaches a trailer axle to the loose springs. It includes four eight inch long U bolts. That measurement's taken from the bottom of the U portion here out to the end of the threads. Comes with two U bolt plates for 1 and 3/4 inch, or 2 inch springs, and it comes with eight 9/16th inch by 18 hex nuts.Now, spring seats, they're required for mounting the axle to the loose springs. Ours sold separately.
If you need spring seats, you can check some options out at etrailer.com. This kit is designed for a typical 8000 pound axle that has a diameter of 3 and 1/2 inches. We're looking at nice, durable steel construction on this kit. And again, it fits springs that have a width of 1 and 3/4 inches and 2 inches. That's going to do it for today's look at the U bolt kit for mounting 8000 pound round trailer axles..
Customer Reviews
U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts - APUBR-35
Average Customer Rating: 4.9 out of 5 stars (37 Customer Reviews)
Mount your round, 3-1/2" diameter axle to your trailer's leaf springs with this U-bolt kit. U-bolts, plates and nuts included.
- APUBR-35
by: Dan04/13/2021
Samatha was very helpful in helping with an alternative of leaf springs i needed. Reached out to me right away with the others i could use, and purchased. Now i can get my trailer back together.
- APUBR-35
by: Stephen08/31/2021
Good products, fair prices and decent delivery with sturdy packaging.
- APUBR-35
by: Bart T10/13/2021
People were great
- APUBR-35
by: Gregory06/11/2020
Nice job "e-Trailer"; received this "heavy" order very promptly; did not expect it so quickly in view of how other retailers/ manufacturers/ on-line businesses are behind in fulfilling orders. Packages (3) came all intact, well packed and product received in great condition. The order included: > 5-Leaf Slipper Spring w/ Hook End for 6,000-lb Trailer Axles (2) > U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles - 8" Long U-Bolts (2) > Tandem-Axle Trailer Equalizer Kit for 2" Slipper Springs - 10-1/8" Long Equalizers (2) > Dexter Nev-R-Adjust Electric Trailer Brake Kit - 12" - Left and Right Hand Assemblies - 6K (2) > Mounting Bolts and Hardware for 12" Brake Assemblies (2) > Bearing Buddy Bearing Protectors - Model 2441SS - Stainless Steel (Pair) (2) > Bearing Kit, 15123/25580 Bearings, GS-2125DL Seal (4) > Optronics LED Combination Trailer Tail Lights - Submersible - 40 Diodes - Driver and Passenger Side. These items are being utilized in the total suspension replacement of a 10,000 gvwr tandem axle trailer. Good sized job for a DIY'er. I expect that it will give my JD 2038 tractor a smooth and safe ride as it is towed/ hauled down the highway. Thank you. I would/will strongly recommend to a friend/relative or associate. ( I'd take a picture of the "project", but there is a vicious rain storm occurring outside; perhaps one or two pics to follow at a later time).
- APUBR-35
by: Benjamin01/03/2020
Great product! The steel is of very high quality, not the cheap gold colored stuff that'll snap off as soon as you try to tighten it. The backing plates are good and thick, and after wrenching on them pretty hard with the impact and then a breaker bar, there is no deformation. I'm confident that these will stand up to whatever the road throws at them. As always, very fast shipping and great customer service! Thanks!
- APUBR-35
by: John03/08/2021
Direct replacement perfect fit.
- APUBR-35
by: Daniel12/10/2020
Awesome parts, prices, and service. I highly recommend etrailer.
- APUBR-35
by: Joey02/27/2020
Installed on 25’ gooseneck trailer. I’ve had no issues and have put thousands of miles and lots of heavy loads since.
- APUBR-35
by: Maria12/07/2020
Heavy duty product. Love it!!
- APUBR-35
by: Norris02/24/2021
REally did the job..
- APUBR-35
by: Jns builders07/29/2015
Exactly as I ordered i will be ordering more products from etrailer great service and fast shipping.
- APUBR-35
by: Unkldave06/25/2017
The specialist at etrailer walked me through the options and helped me select the perfect fit for my trailer. My trailer went from serious danger on the road to a 10 minute fix! Thanks for your help!
- APUBR-35
by: Maria10/30/2020
Received faster than expected. Getting ready to order again from them.
- APUBR-35
by: Robert R06/02/2019
Fit as they should, quality parts at and affordable price.
- APUBR-35
by: Jim B.06/25/2017
Just what I ordered, I plan to install soon... The shipping was really quick!!
- APUBR-35
by: Joe C08/24/2020
Fit and work great
- APUBR-35
Nathan P - 04/15/2020
by: Nathan.P04/09/2019
They worked and fit great
Comments
Still doing great
Nathan P - 04/15/2020
- APUBR-35
by: Jim E05/15/2020
Thanks they worked great
- APUBR-35
by: Keith08/05/2017
Just what I needed and the price was great shipping was free and came very quickly
- APUBR-35
by: g lc09/22/2016
Perfect and delivered quickly.
- APUBR-35
by: Terry04/16/2020
AWESOME FAST DELIVERY THNKS
- APUBR-35
by: Merlin12/07/2017
Very fast shipping! even quicker than expected. Heavy duty product. Great communication. Thank you!
- APUBR-35
by: Travis09/10/2019
Awesome products and super fast shipping a+++++
- APUBR-35
by: Allan R.04/17/2016
I am very happy with this product. everything fit as if the trailer was new. product is Excellent. Thank you etrailer.
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Ask the Experts about this Redline Trailer Leaf Spring Suspension
- Torque for U-Bolt Kit for Mounting 8,000-lb, Round Trailer AxlesThe U-bolts on the U-Bolt Kit for Mounting 8,000 lb Round Trailer Axles # APUBR-35 are 9/16". The torque specs for 9/16" bolts on trailer suspension 65 ft/lbs - 95 ft/lbs. Torque specs depend on bolt size: 1/2" bolts: 45 ft/lbs - 70 ft/lbs 9/16" bolts: 65 ft/lbs - 95 ft/lbs 5/8" bolts: 100 ft/lbs - 120 ft/lbs 3/4" bolts: 140 ft/lbs - 160 ft/lbs
view full answer... - How to Determine Correct Replacement Slipper Springs for Triple Axle Trailer With 8,000 lb AxlesI can help you determine exactly what you need to replace the suspension in your triple axle trailer, although we don't have any type of database which has each part for each year, make and model of trailer that would tell us exactly what you have on your trailer, which means you'll need to do a bit of pretty simple measuring. Since you have a triple axle trailer, with three 8,000 lb axles you will need slipper springs for that axle capacity, for which we have two of that capacity. To...
view full answer...![Image 1 for]()
- Spacing Between Hangers With Slipper Springs for 8,000 lb Axles and Hanger KitI checked for you and when installing the 7-Leaf Slipper Spring w/ Hook End for 8,000-lb Trailer Axles # SP-285275 with the Tandem-Axle Trailer Hanger Kit for 2" Slipper Springs - 12" Long Equalizers # APT6SE the distance between the front and center hangers will be 28-1/2", the distance between the center and rear hangers will be 29-1/2", the distance between the U-bolts will be 33" and distance between the center of the axle and trailer frame will be 4-1/2". I made a diagram for you...
view full answer...![Image 1 for]()
- TRAILER SPRINGSFor the large 8000 lb. springs you want to use U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles part # APUBR-35 and for the smaller 3500 lb. springs use the U-Bolt Kit for Mounting 3,500-lb, Round Trailer Axles part # APUBR-1. Thes will give you the u bolts, nuts and the new plates so you will be set.
view full answer... - Raising the Height of a Trailer that has a 3-1/2 Inch Diameter Round AxleThere are no over/under conversion kits for a 3-1/2 inch diameter axle but I can tell you the parts you will need to make one. You will need spring seats for 3-1/2 inch diameter axles, # TRSS350 and a new u-bolt kit # APUBR-35. The new springs will have to be welded onto the axle.
view full answer... - Hanger Kit, U-Bolt Kit and Spring Seats for Tandem Axle Trailer with 3-1/2 Inch Diameter Round AxlesA 3-1/2 inch diameter round axle is usually rated at 8,000 pounds but could also be a 3,500 pound axle though this is rare. You can get a more accurate determination of the capacity by getting the inner and outer bearing numbers stamped into the sides of the bearings. For a hanger kit # APT3 will keep the distance from the deck to the axles at a minimum and still have room for suspension travel. You will also need a u-bolt kit, # APUBR-35, for one axle. And you will likely need new spring...
view full answer...
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Info for this part was:
Installed by:
Cole B
Updated by:
Wilson B
Updated by:
Alexander C
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