For many Ford F250 and F350 owners, the absence of a factory fifth wheel prep package can be a missed opportunity—especially for those who frequently haul heavy trailers or use their trucks for commercial purposes. Fortunately, the BC3Z-5F057-A and LC3Z-5F057-A fifth wheel prep kits offer a cost-effective and relatively straightforward solution. These kits allow users to retrofit their trucks with factory-style fifth wheel capabilities without the need for a full-frame modification or expensive dealership service. This guide will walk through the process of installing the factory fifth wheel prep package, using hardware and instructions derived from verified Ford-related documentation and user experiences.
Overview of the BC3Z-5F057-A and LC3Z-5F057-A Kits
The BC3Z-5F057-A and LC3Z-5F057-A are two part numbers associated with the factory fifth wheel prep kits for Ford trucks, particularly the 2011–2017 F250 and F350 models. These kits are designed to be installed by the end user or a qualified technician and include the necessary brackets, hardware, and installation instructions. A key advantage of using these kits is that they are designed to integrate seamlessly with the existing frame structure, maintaining the integrity and aesthetics of the truck.
The installation involves removing the bed, modifying the frame, and reassembling the components with the new fifth wheel mounting brackets in place. According to user reports, the hardest part of the process is lifting the bed off the frame, which is typically manageable with a few assistants and proper tools. The process also includes cutting and deburring the frame for the hitch receiver, aligning the bracket, and reinstalling the bed with the new hardware.
Preparing for Installation
Before beginning the installation, it's essential to gather the correct parts and tools. The BC3Z-5F057-A or LC3Z-5F057-A kits are available through Ford parts suppliers or online platforms like Car-Part.com, where users can source used parts from newer Ford models. It is crucial to verify compatibility with the specific truck model, as the fifth wheel prep kits are designed for 2011–2017 F250 and F350 models.
The following tools and materials are necessary for the installation: - 3" and 4.25" hole saws (or 4" hole saw and a die grinder) - EP24 socket - Grade 8 bolts and nuts (if not included in the kit) - Ratchet straps or hoist - Sawhorses or support for the bed - Debur tool - Paint (optional, for aluminum frames)
It is also recommended to have at least one or two assistants to help lift the bed, as this is one of the more labor-intensive parts of the process.
Step-by-Step Installation Process
1. Removing the Tailgate and Bumper
The installation begins with removing the tailgate and bumper to gain access to the frame and bed bolts. The tailgate can be removed by pulling it at a 45-degree angle and disconnecting the cables. The bumper is held in place by two 21mm nuts and a 7-way trailer plug and backup sensor plug. Removing the bumper provides more room to work and reduces the risk of damaging it during the installation.
2. Lifting the Bed
The bed is secured to the frame with eight EP24 bolts. These bolts are relatively easy to remove, as the nuts are self-capturing on the frame. However, in areas with high salt exposure, it is advisable to apply penetrating oil before removing the bolts. Once the bolts are removed, the bed can be lifted using ratchet straps, a hoist, or manual assistance. A gantry crane or set of sawhorses can be used to support the bed while the installation is completed.
3. Preparing the Frame for the Fifth Wheel Mount
With the bed removed, the next step is to prepare the frame for the fifth wheel mount. This involves cutting a hole in the frame using the 3" and 4.25" hole saws. The hole must be precisely aligned with the existing frame structure to ensure the hitch will fit correctly. Once the hole is cut, a deburring tool should be used to smooth the edges. If desired, the exposed metal can be painted, although this is not strictly necessary since aluminum does not rust.
4. Installing the Outer and Inner Frame Brackets
The next step is to install the outer and inner frame brackets that come with the BC3Z-5F057-A or LC3Z-5F057-A kit. These brackets are designed to fit into the existing frame structure and provide a mounting point for the fifth wheel hitch. If the frame does not already have inner brackets welded in place, they should be installed first. The outer frame brackets can then be slid into place and aligned with the hitch bracket.
The hitch bracket is then positioned within the frame and secured with Grade 8 bolts. It is important to ensure the bracket is centered and aligned with the locating holes on the frame. Once the bracket is in place, the bed can be reinstalled to verify the alignment.
5. Reinstalling the Bed and Securing the Hitch
After the brackets are in place, the bed is reinstalled onto the frame. The bed has self-aligning plastic pins on the passenger side that help position it correctly relative to the cab. Once the bed is in place, the bolts are tightened in a specific sequence to ensure proper torque and alignment. The frame side bolts should be tightened first, followed by the outer and inner bolts that secure the bracket to the hitch.
The torque specifications for the bolts are as follows: - 9/16"x4" frame bolts: 150 ft-lbs - 4 outer bolts: 110 ft-lbs - 4 inner bolts (if not included in the kit): 200 ft-lbs
It is worth noting that Ford recommends using new bolts for this installation, as the existing bed bolts have sealant around the necks and are considered a one-time use. However, some users have successfully reused the original bolts with proper cleaning and inspection.
6. Final Adjustments and Reassembly
After the bed is reinstalled and the bolts are torqued to the correct specifications, the final step is to reassemble the bumper, tailgate, and other components. The bumper should be reattached using the same mounting points, ensuring the 7-way trailer plug and backup sensor are properly connected. The tailgate can then be reattached, and any trim rings or bed plugs should be installed to cover the cut areas.
Trim rings are available as part number BC3Z-99000A25-A and are designed to fit into the grooves of the bed. They can be slightly folded to fit into place and then worked into the groove. If the trim rings are difficult to install, it is recommended to place them in the sun for a short time to make them more pliable.
Troubleshooting and Common Issues
During the installation process, users may encounter several common issues that can be resolved with careful attention to detail. One of the most common challenges is aligning the fifth wheel hitch with the bed and frame. This can be mitigated by ensuring the brackets are properly centered and that the locating holes are aligned before the bolts are tightened. If the hitch does not line up correctly, the bed may need to be removed and the brackets adjusted.
Another potential issue is the removal of the bed bolts. In some cases, the nuts may be seized due to corrosion or age. Applying penetrating oil before removal can help prevent this issue. Additionally, if the frame is in a salty environment, it is recommended to use new bolts to avoid any potential issues with corrosion or sealant.
Maintenance and Long-Term Care
Once the fifth wheel prep package is installed, it is important to maintain the hardware to ensure long-term performance. Regular inspection of the bolts, brackets, and hitch is recommended, especially after long hauls or heavy use. Any signs of corrosion or wear should be addressed promptly to prevent damage to the frame or hitch.
The trim rings and bed plugs should also be inspected for signs of wear or cracking. If any damage is detected, they should be replaced to maintain the integrity of the bed and prevent water or debris from entering the frame.
Conclusion
Installing the BC3Z-5F057-A or LC3Z-5F057-A fifth wheel prep package on a 2011–2017 Ford F250 or F350 is a feasible and cost-effective way to add fifth wheel capabilities to a truck that did not come with the factory package. The process involves removing the bed, modifying the frame, and reassembling the components with the new hardware in place. With the right tools, materials, and a few assistants, the installation can be completed in a single day.
By following the detailed steps outlined in this guide, users can ensure a smooth and successful installation that meets the performance and safety standards of a factory fifth wheel setup. The result is a versatile and reliable truck that can handle a wide range of hauling needs.