UFP Unique Functional Products

UFP Replacement Trailing Arm 3,750 lb with DB-35 Disc Brakes and Vault Hybrid Lubrication System #U43130

  • Sale
  • Regular price $ 355.26
Shipping calculated at checkout.

UFP Replacement Trailing Arm 3,750 lb with DB-35 Disc Brakes and Vault Hybrid Lubrication System #U43130

This replacement trailing arm works with all Trailer Buddy-UFP 3750lb. capacity torsion axles.  Mounts easily to the desired position by splines that allow for ride height adjustment.  The complete assembly is ready to be bolted on to existing torsion axle with mounting bolt (included). Complete with DB-35 series Disc Brake Rotor and Caliper.


  • Trailing arm, rotor, and caliper are zinc plated for superior corrosion protection
    • 9 3/4" diameter DB-35 Rotor (Tapered)
    • Standard UFP Zinc Plated DB-35 Caliper
  • VAULT maintenance-free hybrid oil hub, requires no maintenance and is completely sealed
  • Tooth and groove or spline attaches easily to any 3,750 lb UFP Torsion axle
  • Mounting bolt, nut, and washer are included
  • Tapered spindle size is 1 3/8" x 1 1/16"
  • Bearings and seal are pre-packed with VAULT Hybrid Oil
    • 68149 Inner Bearing and 44649 Outer Bearing
    • 1.68 ID Seal
  • VAULT hub cap seals the hub and maintains slight pressure in hub

UFP Torsion Axle end unit trailing arm with VAULT Hybrid oil pre-packed with DB-35 Series Disc Brakes

Customer Reviews

Based on 28 reviews
Terry W. (San Angelo, US)


Brent C. (Gonzales, US)
Great Support

I’m from Louisiana and was going fishing in Florida when I discovered the bad hub. Could not find a replacement anywhere local so I called Ranger Boats. They directed me to Pacific Trailers. I received the new hub the next day. Outstanding service.

DONALD G. (Moorpark, US)

Parts worked out great, took a little time to get shipped

Kirk B. (San Diego, US)
Great customer service

Answered all my questions. Part worked like a charm.

Scott B. (Sonora, US)
Everything I needed.

The right part. Easy to install. In times like these,it was a relief to find it was in stock. Not Pacific's fault,but priority mail in my area was not a priority. Thanks for getting me back on the water.

Matt B. (Chicago, US)

Pacific trailers was great, helped me verify I was purchasing the correct part, and expedited my shipment so I could be up and running for the weekend. Part fit great on my trailer for my 2019 T23 .

Marti K. (Rainsville, US)

Item was exactly what I needed. Shipping was very fast. Thanks so much.

EDWARD B. (Colorado Springs, US)
As Expected- great Job

I have used Pacific Trailers many times as a trailer parts manager through various businesses. They have the boat trailer parts in stock and and fast shipping. Great Job guys!

matt r.
Worked perfectly on my ranger trailer

Service was great when I called and they answered my questions.

Derron W. (Minnetonka, US)
Customer service

These guys at PT are top shelf. Made sure I had exactly what was needed. Not to mention best prices and having available parts is another thumbs up.