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Blue Ox



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Always the correct part
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Specific Fit: Designed specifically for Blue Ox tow bars, ensuring a secure and precise fit with Roadmaster base plates.
Finish: Powder Coat
Color: Black
Universal or Specific Fit: Specific
Upgrade your towing gear with the Blue Ox BX88178 Tow Bar Bracket. This pair of adapter brackets is engineered to replace the traditional lug-style brackets on your Blue Ox tow bar, allowing it to fit seamlessly with Roadmaster base plates. Designed for a specific fit, these brackets will provide a solid and secure connection for your towing needs. The brackets are finished with a durable powder coat in classic black, offering excellent resistance to rust, chipping, and UV damage. Enhance your towing setup with the Blue Ox BX88178 Tow Bar Bracket for a safer and smoother towing experience.

Blue Ox is known internationally for recreational and commercial towing products, manufacturing in Pender, Nebraska since 1925. The line covers tow bars and vehicle-specific baseplates for flat towing behind a motorhome, sway control and weight distributing hitches, supplemental braking accessories and towing wiring, backed by patented designs and long-standing customer service.
Blue Ox has manufactured since 1925 and is recognised internationally for towing products and customer service. The company operates from Pender, Nebraska, where it grew out of Automatic Manufacturing Co., a business that started with cattle oilers and developed into agricultural equipment, tractor accessories and trailer towing hardware. That agricultural engineering heritage still shows in how the towing products are built, and the company holds patents across weight distribution, fifth wheel and tow bar designs.
Flat towing is the discipline Blue Ox is best known for. Towing a car with all four wheels on the ground behind a motorhome demands a system that stays rigid under braking, articulates properly over uneven ground, and connects to the towed vehicle at points strong enough to take the load. Blue Ox tow bars handle the first two, with self-aligning arms that latch under tension and release without a struggle when the load is off them. Vehicle-specific baseplates handle the third, engineered per make and model to tie into structural mounting points behind the fascia.
The wider flat towing range covers supplemental braking systems, safety cables and the accessories that make a complete legal setup, along with baseplate wiring and dinghy towing harnesses that pass lighting signals to the towed vehicle without back-feeding its electrical system.
For conventional trailer towing, Blue Ox weight distributing hitches with integrated sway control transfer tongue load onto the tow vehicle's front axle and resist the yaw that crosswinds and passing trucks induce.
The company describes its foundation as customer service, designing around what owners actually ask for, and it runs an RV park adjacent to the factory where customers can stay. Sister operations at the same Nebraska site include Automatic grain roller mills and MAD-RAMPS pivoting ramp systems.
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The BX88178 is a RoadMaster Bracket to Blue Ox Towbar Adapter manufactured by Blue Ox. It allows a towed vehicle equipped with a RoadMaster bracket to be connected to a Blue Ox tow bar. The adapter consists of a main weldment (adapter body) and two mount brackets that attach to the RoadMaster bracket using bolts, washers, and nuts.
The manual does not specify which RoadMaster bracket models are compatible with the BX88178. Contact Blue Ox or consult a fitment database to confirm compatibility with your specific RoadMaster bracket model before purchasing.
The BX88178 kit includes: one adapter weldment (61-5823), two mount brackets—one driver side (61-5829) and one passenger side (61-5828)—two quick pin assemblies (84-0001), four 1/2-13 x 1½ hex head bolts grade 5 zinc plated (201-0051), eight 1/2 flat washers zinc plated (203-0005), four 1/2-13 hex nuts zinc plated (202-0005), and four 1/2 lock washers zinc plated (203-0012).
The manual does not specify which tools are required for installation. You will likely need wrenches or sockets to fit 1/2-inch hex bolts and nuts, but consult the manual or contact Blue Ox for a complete tool list.
Yes. Step 1 of the installation instructions states: "Remove the cross angle of the RoadMaster bracket, then bolt Item 2 & 3 with hex bolts, flat washers, lock washers, and hex nuts." The cross angle must be removed before the mount brackets are attached.
The manual does not specify whether the cross angle removal is permanent or whether it can be reinstalled. Contact Blue Ox or the RoadMaster bracket manufacturer for guidance on this.
The manual states: "Be sure to position the mount brackets on the correct side." Item 2 is the driver side (DS) mount bracket and Item 3 is the passenger side (PS) mount bracket. Position each bracket on its corresponding side of the RoadMaster bracket before bolting them in place.
Follow these steps in order: (1) Remove the cross angle from the RoadMaster bracket. (2) Bolt the driver side and passenger side mount brackets (Items 2 and 3) to the RoadMaster bracket using hex bolts, flat washers, lock washers, and hex nuts. (3) Place the main adapter weldment (Item 1) onto the pegs of the mounting brackets, adjusting bracket position slightly if needed, then retighten the hex bolts. (4) Slide Item 1 all the way down on the pegs and secure it with the quick pin assemblies (Item 4).
Use the four 1/2-13 x 1½ hex head bolts (201-0051), eight 1/2 flat washers (203-0005), four 1/2 lock washers (203-0012), and four 1/2-13 hex nuts (202-0005). Bolt the driver side bracket (Item 2) and passenger side bracket (Item 3) to the RoadMaster bracket as shown in the diagram. The manual does not provide torque specifications for these bolts.
The pegs on the mount brackets are designed to hold the main adapter weldment (Item 1). The adapter slides onto these pegs during installation. If the adapter does not fit easily, the mounting brackets may need to be moved slightly to accommodate the pegs.
Yes. Step 2 states: "the mounting brackets may have to be moved slightly to accommodate the pegs of Item 1, then retighten the hex bolts." After placing the adapter weldment on the pegs, you may need to reposition the brackets slightly and retighten all hex bolts to ensure a secure fit.
The adapter weldment (Item 1) must be slid all the way down on the pegs of the mounting brackets before it is pinned with the quick pin assemblies. Step 3 states: "Once Item 1 is slid all the way down on the pegs, pin Item 1 with the quick pin assemblies (Item 4)."
The two quick pin assemblies (Item 4) are used to secure the main adapter weldment (Item 1) to the mounting brackets after it has been slid all the way down on the pegs. They provide a quick-release connection that allows the adapter to be removed if needed.
The manual does not provide torque specifications for the 1/2-13 x 1½ hex head bolts. Contact Blue Ox at 402-385-3051 or www.blueox.us for the correct torque value.
The four hex head bolts (part 201-0051) are Grade 5, zinc plated. They are 1/2-13 x 1½ in size.
The manual does not specify post-installation checks or safety inspections. After completing the four installation steps, verify that the adapter weldment is fully seated on the pegs, all hex bolts are tight, and the quick pins are fully engaged. Contact Blue Ox for recommended post-installation inspection procedures.
The manual does not include specific safety warnings or operating restrictions. Ensure the adapter is properly installed and all fasteners are secure before towing. Contact Blue Ox or consult the tow vehicle and towed vehicle manuals for towing safety information.
The BX88178 is designed to adapt RoadMaster brackets to Blue Ox towbars, but the manual does not list compatible RoadMaster models. Verify fitment with Blue Ox before purchasing.
The kit includes four 1/2-13 x 1½ Grade 5 hex bolts, eight 1/2 flat washers, four 1/2 lock washers, four 1/2-13 hex nuts, two quick pin assemblies, and the adapter and bracket weldments.
Yes, the cross angle of the RoadMaster bracket must be removed before installation. This is the first step in the installation process.
Slide the adapter weldment all the way down on the pegs of the mounting brackets, then secure it with the two quick pin assemblies provided.
The manual does not provide torque specifications. Contact Blue Ox at 402-385-3051 for the correct torque value.
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