At a Glance
- SKU: 945475-B-IMP-R

Right side trailer brake service kit for standard 3,500 lb #84 spindle axles using 10" electric brakes and a 5 on 4.75" wheel bolt pattern. Includes drum, right hand electric backing plate, bearings, seal, dust cap, and lug nuts.
This R&P Carriages trailer brake drum and backing plate kit is built for the right hand side of compatible 3,500 lb trailer axle applications. It is a practical service solution for replacing a failed brake drum or right side electric backing plate, and it can also be used where the trailer is being set up with the listed 5 on 4.75" bolt pattern, #84 spindle bearing set, and 10" electric brake configuration.
This is the kind of trailer brake package we like because it groups the wear items that commonly matter during a drum and electric brake repair. The bearing races are already pressed into the drum, which helps reduce setup time during installation.
Compatibility: Compatible with many standard 3,500 lb trailer axle setups, including listed AL-KO, Dexter, Lippert, Axis, Quality, and similar applications where spindle, brake flange, brake size, and bolt pattern match.
Vehicle / System Fit: Trailer axle brake and hub/drum service applications using a standard #84 spindle, 10" electric brakes, and 5 on 4.75" wheel bolt pattern.
Installation Notes: Verify right hand orientation, 10" brake size, 4-bolt brake flange, #84 spindle bearing sizes, grease seal size, and 5 on 4.75" bolt pattern before ordering or installing.
Performance Insight: A matched drum and electric backing plate helps address braking wear at the wheel end instead of replacing only one worn component and leaving the rest of the brake assembly questionable.
Selling Brand: R&P Carriages
Application Reference: AL-KO, Dexter, Lippert, Axis, Quality, and other axle names in this listing are used only as compatibility references for common trailer axle applications where measurements, mounting points, and configuration match.
What This Means: This listing is for an R&P Carriages trailer brake drum and right hand electric backing plate service kit, not a guaranteed OEM-branded item unless specifically stated and verified.
Before Ordering: Verify bolt pattern, stud spacing, brake size, spindle type, bearing numbers, seal size, brake flange pattern, axle tube size, and right hand side orientation before installation.
Brake drums and backing plates need to match the axle and wheel-end setup. The most common ordering mistakes are choosing the wrong side, wrong bolt pattern, wrong spindle bearing set, or wrong axle capacity family.
New trailer brake drum with a 5-lug, 4.75" bolt circle for compatible wheel and axle setups.
Includes one new 10" electric backing plate for the right hand side only.
Bearing race cups are already pressed into the drum to help simplify wheel-end service preparation.
Includes L68149 inner bearing, L44649 outer bearing, and 10-19 grease seal for matching standard #84 spindle applications.
| Specification | Detail |
|---|---|
| Part Number | 945475+10RVEBRH-KIT |
| Brand | R&P Carriages |
| Product Type | Trailer brake drum and electric backing plate service kit |
| Application | Standard 10" electric trailer brake applications on compatible 3,500 lb #84 spindle axles |
| Wheel Bolt Pattern | 5 on 4.75" bolt circle |
| Stud Spacing Note | Listed as 4-1/2" stud spacing for this 5-lug pattern measurement reference |
| Brake Size | 10" electric trailer brake |
| Side / Orientation | Right hand side only |
| Axle / Spindle Fit | Standard #84 spindle, 3,500 lb axle applications where dimensions match |
| Inner Bearing | L68149, 1-3/8" ID |
| Outer Bearing | L44649, 1-1/16" ID |
| Grease Seal | 10-19, 1-3/4" ID |
| Brake Flange | Requires compatible 4-hole brake mounting flange on the axle |
| Finish | Not specified in supplied product information |
| Category | Details |
|---|---|
| Vehicle / System | Trailer axle hub/drum and electric brake assembly |
| Primary Fit | 3,500 lb trailer axles using standard #84 spindle, 10" electric brakes, and 5 on 4.75" wheel bolt pattern |
| Common Application References | AL-KO, Dexter, Lippert, Axis, Quality, and similar axle applications where measurements and mounting points match |
| Brake Mounting Check | Axle should have a small square 4-hole brake mounting plate welded to the axle tube for the backing plate |
| Axle Tube Check | Typical 3,500 lb axle tube is about 2-1/4" OD. A 2.75" tube usually points to a larger 5,200 / 6,000 / 7,000 lb axle family. A 1-5/8" tube usually points to a smaller 2,000 / 2,200 lb axle family. |
| Notes | This kit is for the right side only. Confirm bolt pattern, bearing numbers, grease seal, brake size, brake flange, axle capacity, and side orientation before ordering. |
| Quantity | Item |
|---|---|
| 1 | New brake drum, 5 on 4.75", with bearing race cups pressed in |
| 1 | New 10" electric backing plate, right hand side |
| 1 | Inner bearing L68149, 1-3/8" ID |
| 1 | Outer bearing L44649, 1-1/16" ID |
| 1 | Grease seal 10-19, 1-3/4" ID |
| 1 | New dust cap |
| 5 | New lug nuts |
Selected products are added together. Review the cart and verify kit contents to prevent duplicates. Prices and discounts are determined at checkout.
Have your SKU or manufacturer part number, photos of the original part and mounting, and any critical measurements ready. Capacity, voltage, or bolt pattern can help too.
815-357-3292 · 270 E Jackson St · Seneca, IL 61360
Customer feedback summarized from Google and Yellow Pages. Dates are shown where available.
Ordered trailer repair parts repeatedly; praised fast service, careful packing, and accurate orders.
Found the correct RV keys at a good price with free shipping; the keys worked as expected.
Needed an unusual axle and leaf-spring size; the team listened and helped him sort out the fit.
Praised the OEM and aftermarket selection, discounts, quick shipping, and friendly parts staff.
Got the axle he needed right away, set up with a custom spring perch.
Praised the polite staff and quality welding on a project.
Replacement struts brought a long-used door back to working order.
Had a trailer built to his needs at a fair price, then found parts for two other trailers in stock.
Praised the customer service after working with R&P over several years.
Found the gas shock he wanted at a good price with shipping included.
Received swivel D-rings with backing plates and praised the price, correct order, and service.
The right parts arrived the first time, with fast delivery and helpful staff.
Said project advice and prompt shipping helped finish a trailer project.
Reported helpful service and fast shipment to Germany.
Praised a suspension kit, fair pricing, and good parts.
Was pleased with a replacement trailer cord.
Noted dependable service and products across repeat visits.
Said the axle installation fit perfectly and thanked Josh and the crew.
Praised the crew’s professionalism during a difficult hitch replacement.
Liked the product, price, communication, and shipping.
Said the product description explained what would work for the trailer.
Received the item as described with very fast shipping and plans to return.
Praised accurate description, quick shipping, and clear communication.
Was happy with the product and its price.
Called it a pleasure doing business with R&P.
Was pleased with product quality, quick delivery, and an easy installation.
Was enthusiastic about the products.
Was ready to install the product on every trailer they own.
Expected to buy again after a good experience.
Reported that the newly installed parts were working perfectly.
Said things went well, as they had on previous visits.
Praised clear communication and fair value.
Said the transaction went as expected.
Noted good value, careful packing, and fast shipping.
Found the team professional and easy to work with.
Praised fast shipping and good communication.
Shared appreciation for the owners and their company.
Reported prompt shipping and said they would buy again.
Found R&P easy to deal with.
Praised the people and the service.
Reported a good fit, fair price, accurate listing, and quick shipping.
Received the order a day early and recommended the seller.
Described a no-hassle, professional custom-trailer purchase.
Praised a new trailer, custom additions, helpful staff, and clear pricing.
Found the right hub covers quickly and got helpful maintenance advice.
Said R&P helped their company get back on the road after an axle problem.
Was happy with a dump-trailer purchase after comparing options.
Received clear help choosing brake assemblies and bearing seals, followed by fast shipping.
Found a good deal on a 16-foot dump trailer and planned to return.
Thanked the staff for their patience and recommended the shop.
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