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Blue Ox



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Always the correct part
We know our products
Quality Products
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Specifically designed for Blue Ox TrackPro weight distribution hitches, ensuring a perfect fit and seamless operation.
Installation Required Yes/No: Yes
Finish: Powder Coat
Material: Steel
Mounting Hardware Included: Yes
Introducing the Blue Ox BXW4077, a top-tier replacement hitch head designed specifically for the Blue Ox TrackPro weight distribution hitches. This unit is perfect for trailers with underslung couplers. The Blue Ox BXW4077 is engineered with high-quality steel for superior durability and strength. It is also finished with a powder coat for added resistance to corrosion and rust, ensuring a long-lasting performance. This replacement hitch head also comes with all the mounting hardware required for installation, making it a convenient choice for your vehicle.

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 BXW4048 Standard Hitch Head Kit includes one hitch head (part 299-0845) and two 5/16" x 2-1/2" effective spring lock pins (part 229-0440).
The BXW4077 Underslung Hitch Head Kit includes one underslung hitch head (part 299-0859) and two 15/16" x 2-1/2" effective spring lock pins (part 229-0440).
Both kits are designed to install onto an existing receiver hitch mount in the previously used location using existing 3/4" fasteners. The main difference is that the BXW4048 is a standard hitch head while the BXW4077 is an underslung hitch head. Consult the manual or Blue Ox customer service to confirm which type is appropriate for your specific receiver hitch mount.
Before installing the hitch head kit, you must unhook the trailer from the existing hitch head and remove the assembly bars from the hitch head. Do not discard the fasteners used to attach the existing hitch head, as they will be reinstalled.
Yes. If the ball is being reused, remove it from the existing hitch head and install it onto the new hitch head. Torque the ball to the manufacturer's specifications (not stated in this manual; consult the ball manufacturer or Blue Ox customer service at 402-385-3051).
Use the existing 3/4" fasteners that were removed from the old hitch head. The manual does not specify the quantity or thread length, but they are the same fasteners that held the previous hitch head in place.
Torque the 3/4" bolts to 260 ft/lbs when installing the new hitch head onto the receiver hitch mount.
The BXW4048 Standard Hitch Head Kit includes two 5/16" x 2-1/2" effective spring lock pins (part 229-0440).
The BXW4077 Underslung Hitch Head Kit includes two 15/16" x 2-1/2" effective spring lock pins (part 229-0440).
Yes. You must unhook the trailer from the hitch head before beginning installation.
Yes. You must remove the assembly bars from the hitch head before installing the new hitch head kit.
The manual does not specify whether the fasteners are included. You will use the existing 3/4" fasteners from your current hitch head. Contact Blue Ox customer service at 402-385-3051 if you need replacement fasteners.
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Original price was $699.99. Current price is $202.94.




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