At a Glance
- SKU: UBK-3500-R
PRODUCT INFORMATION
Product Details
3500 lb Trailer U-Bolt & Plate Kit – Fits 2-3/8" Round Axles
Part Number – UBK-3500-R
This complete U-bolt and plate kit is designed for standard 2-3/8" round 3500 lb axles. It includes everything required to secure the axle to your leaf springs — perfect for utility, cargo, landscape, and boat trailers.
All components are sized to OEM-spec dimensions and fit the majority of 1.75" wide leaf springs commonly used in 3500 lb axle assemblies.
What’s Included
| Component | Details | Qty |
|---|---|---|
| U-Bolts | 1/2" diameter 5-1/2" length Formed for 2-3/8" round axles |
4 |
| Locking Nuts | 1/2" fine-thread, zinc-coated | 8 |
| U-Bolt Plates | 4.75" × 3.75" Fits 1.75" leaf springs Appearance may vary slightly |
2 |
Specifications
| Specification | Detail |
|---|---|
| Axle Type | 2-3/8" Round (3500 lb) |
| Spring Compatibility | 1.75" Wide Leaf Springs |
| Material | Steel (raw or coated depending on batch) |
| Typical Use | Utility, cargo, landscape, and boat trailers |
One kit services a single axle. For tandem trailers, order two kits.
Related Parts & Kits
Check fitment, measurements, and kit contents before ordering. Related parts may not be required for your repair.
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BEHIND THIS LISTING
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Ariah Granados
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Ken Martin
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815-357-3292 · 270 E Jackson St · Seneca, IL 61360
CUSTOMER REVIEWS
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TRAILER PARTSGOOGLE
Ordered trailer repair parts repeatedly; praised fast service, careful packing, and accurate orders.
RV KEYSGOOGLE
Found the correct RV keys at a good price with free shipping; the keys worked as expected.
AXLE & LEAF SPRINGSGOOGLE
Needed an unusual axle and leaf-spring size; the team listened and helped him sort out the fit.
PARTS & SHIPPINGGOOGLE
Praised the OEM and aftermarket selection, discounts, quick shipping, and friendly parts staff.
CUSTOM AXLEGOOGLE
Got the axle he needed right away, set up with a custom spring perch.
WELDINGGOOGLE
Praised the polite staff and quality welding on a project.
GAS STRUTGOOGLE
Replacement struts brought a long-used door back to working order.
CUSTOM TRAILERGOOGLE
Had a trailer built to his needs at a fair price, then found parts for two other trailers in stock.
CUSTOMER SERVICEGOOGLE
Praised the customer service after working with R&P over several years.
GAS SHOCKGOOGLE
Found the gas shock he wanted at a good price with shipping included.
CARGO TIE-DOWNGOOGLE
Received swivel D-rings with backing plates and praised the price, correct order, and service.
PARTS DELIVERYGOOGLE
The right parts arrived the first time, with fast delivery and helpful staff.
PROJECT HELPYELLOW PAGES
Said project advice and prompt shipping helped finish a trailer project.
SHIPPINGYELLOW PAGES
Reported helpful service and fast shipment to Germany.
SUSPENSION KITYELLOW PAGES
Praised a suspension kit, fair pricing, and good parts.
TRAILER CORDYELLOW PAGES
Was pleased with a replacement trailer cord.
SERVICE & PARTSYELLOW PAGES
Noted dependable service and products across repeat visits.
AXLE INSTALLATIONYELLOW PAGES
Said the axle installation fit perfectly and thanked Josh and the crew.
HITCH REPLACEMENTYELLOW PAGES
Praised the crew’s professionalism during a difficult hitch replacement.
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Liked the product, price, communication, and shipping.
LISTING INFORMATIONYELLOW PAGES
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PRODUCT & SHIPPINGYELLOW PAGES
Received the item as described with very fast shipping and plans to return.
COMMUNICATION & SHIPPINGYELLOW PAGES
Praised accurate description, quick shipping, and clear communication.
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SELLER EXPERIENCEYELLOW PAGES
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INSTALLATIONYELLOW PAGES
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DURABILITYYELLOW PAGES
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REPEAT CUSTOMERYELLOW PAGES
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INSTALLED PARTYELLOW PAGES
Reported that the newly installed parts were working perfectly.
REPEAT CUSTOMERYELLOW PAGES
Said things went well, as they had on previous visits.
COMMUNICATION & VALUEYELLOW PAGES
Praised clear communication and fair value.
TRANSACTIONYELLOW PAGES
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PRICE & PACKAGINGYELLOW PAGES
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COMMUNICATION & SHIPPINGYELLOW PAGES
Praised fast shipping and good communication.
TEAMYELLOW PAGES
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SHIPPINGYELLOW PAGES
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CUSTOMER SERVICEYELLOW PAGES
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SERVICEYELLOW PAGES
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FIT & SHIPPINGYELLOW PAGES
Reported a good fit, fair price, accurate listing, and quick shipping.
DELIVERYYELLOW PAGES
Received the order a day early and recommended the seller.
CUSTOM TRAILERYELLOW PAGES
Described a no-hassle, professional custom-trailer purchase.
TRAILER PURCHASEYELLOW PAGES
Praised a new trailer, custom additions, helpful staff, and clear pricing.
HUB COVERSYELLOW PAGES
Found the right hub covers quickly and got helpful maintenance advice.
AXLE HELPYELLOW PAGES
Said R&P helped their company get back on the road after an axle problem.
DUMP TRAILERYELLOW PAGES
Was happy with a dump-trailer purchase after comparing options.
BRAKES, DRUMS & SEALSYELLOW PAGES
Received clear help choosing brake assemblies and bearing seals, followed by fast shipping.
DUMP TRAILERYELLOW PAGES
Found a good deal on a 16-foot dump trailer and planned to return.
FRIENDLY SERVICEYELLOW PAGES
Thanked the staff for their patience and recommended the shop.
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