CURT 2024044569 Helux Coil-Spring 5th Wheel Pin Box, 3,500 lbs. Pin Weight, 18,000 lbs. Weight CapacityCURT$1,575.95In Stock
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CURT
Always the correct part
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Always the correct part
We know our products
Quality Products
Free Shipping!
Limited lifetime warranty (one-year finish, one-year parts)
Patent pending
Purchase verification required. Refer to instruction sheet for pin weight measuring process
Finish: Black
Material: Carbon Steel
Shipping Weight: 169.000 lbs
The CURT Helux 5th Wheel Pin Box redefines towing comfort with advanced coil spring and shock absorber technology. Designed to replace standard pin boxes, it minimizes chucking, jarring, and bouncing during travel, ensuring a smoother ride for both driver and passengers. Its innovative design also protects your RVs gear and belongings by reducing aggressive shifting. This pin box enhances ride quality for pets and passengers by eliminating excessive rattling and vibrations from road hazards. Its premium steel construction, paired with a durable black powder coat finish, ensures long-lasting reliability for miles of towing. Maintenance-free coil spring technology provides dependable performance without the hassle of upkeep, outperforming traditional air systems. Approved for use on Lippert frames, the CURT Helux Pin Box offers a smoother hitching experience for seamless towing. Its robust engineering reduces wear and tear on RV hardware, making it a smarter, worry-free choice for your towing needs. Whether for long trips or local getaways, this pin box delivers comfort and performance you can rely on.
CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-9494Limited lifetime warranty (one-year finish, one-year parts)
The Curt Helux Pin Box is a replacement 5th wheel hitch pin box assembly that connects your 5th wheel trailer to your tow vehicle. It uses a spring-loaded jaw mechanism to grip the kingpin on the trailer, allowing you to safely tow your 5th wheel. The pin box is available in seven different weight ratings to match your specific trailer's pin weight.
You must determine your trailer's pin weight before purchasing. The best method is to take your fully loaded 5th wheel (including all cargo, ATVs, motorcycles, etc.) to a certified scale such as a CAT Scale. Follow the weighing procedure: connect the trailer to the tow vehicle and weigh all three axle groups, then weigh just the tow vehicle alone. Subtract the tow vehicle weight from the combined weight to find your pin weight. Alternatively, multiply your 5th wheel's GVWR by 22% (0.22) for an approximate pin weight. Match your pin weight to the chart on page 1 to select the correct model number.
Part number 2024044568 is rated for a calculated pin weight of 1880–2377 lb when loaded. The minimum pin weight (unloaded, with empty tanks) is 1200 lb, and the maximum pin weight (fully loaded) is 2600 lb.
Part number 2024044567 is rated for a calculated pin weight of 2378–2722 lb when loaded. The minimum pin weight (unloaded) is 1360 lb, and the maximum pin weight (fully loaded) is 2950 lb.
Part number 2024044569 is rated for a calculated pin weight of 2723–3165 lb when loaded. The minimum pin weight (unloaded) is 1610 lb, and the maximum pin weight (fully loaded) is 3500 lb.
Part number 2024122233 is rated for a calculated pin weight of 3166–3712 lb when loaded. The minimum pin weight (unloaded) is 2120 lb, and the maximum pin weight (fully loaded) is 4000 lb.
Part number 2024044570 is rated for a calculated pin weight of 3713–4332 lb when loaded. The minimum pin weight (unloaded) is 2570 lb, and the maximum pin weight (fully loaded) is 4850 lb.
Part number 2024044571 is rated for a calculated pin weight of 4333–4900 lb when loaded. The minimum pin weight (unloaded) is 2860 lb, and the maximum pin weight (fully loaded) is 5400 lb.
Part number 2024044572 is rated for a calculated pin weight of 4901–6000 lb when loaded. The minimum pin weight (unloaded) is 3290 lb, and the maximum pin weight (fully loaded) is 6200 lb.
You will need: SAE socket set, SAE wrenches, tape measure, box-end wrench set, safety glasses, air compressor, and level. Proper tools will improve installation quality and reduce installation time.
The kit includes: one pin box assembly, ten hex bolts (5/8"-11 x 1 3/4", grade 5), and ten serrated-flange nuts (5/8"-11, grade 5). Do not reuse the mounting hardware from the previous pin box; use only the new hardware included in the kit.
No. The manual explicitly states: "Do not reuse the mounting hardware from the previous pin box." You must use the new hardware included in the kit. Mount the Curt Helux pin box with the new hardware included in the kit.
A minimum of two people are required to help support the weight of the pin box as it is being lifted. Three people is recommended. The pin box assembly weighs several hundred pounds. Alternatively, a forklift may be used to lift the pin box into position.
The installation difficulty level is Moderate. This rating is based on the time and effort involved and may vary depending on the installer's level of expertise, the condition of the vehicle, and whether proper tools and equipment are available.
Level the trailer front-to-back and measure from the ground to the bottom of the kingpin plate on the current pin box. Record this measurement as dimension A. This dimension will be used to install the new pin box at the proper height.
Properly support the pin box before removing mounting bolts. An unsupported pin box during product removal can result in death, serious personal injury, severe product and/or property damage. Remove the fasteners securing the old pin box and carefully lower it to the ground. Ensure the pin box is fully supported throughout the removal process.
Lift the new pin box and support it while positioning it at the appropriate height. Measure from the ground up to the flat plate of the upper jaw on the Helux pin box. Adjust the pin box height until it is equal to dimension A (recorded in Step 1) plus 9-1/2 inches. Once positioned correctly, secure it with the supplied hardware kit.
Use an equal number of fasteners as were previously used to mount the old pin box. The kit includes ten hex bolts and ten serrated-flange nuts, but you should use only as many as were on the original pin box.
Torque 5/8" bolts to 120 ft-lb±5 lb. This torque specification is critical to ensure the pin box is properly secured.
The 5th wheel should always be towed while level. Adjustment of the pin box mounting height, the tow vehicle height, or suspension may be necessary to accomplish a level towing condition. After installation, verify that the trailer pulls in a level condition before traveling.
Using the trailer landing gear, adjust trailer height per the manufacturer's recommendation so the bottom of the trailer's pin box is 1/2" to 1" below the hitch skid plate. Failure to follow these instructions may result in the kingpin being too high and coming to rest on top of closed jaws or not completely inside the jaw, which could result in the trailer separating from the hitch.
Place chocks firmly against the front and rear of each trailer tire to prevent movement, either forward or backward. If necessary, lower the tow vehicle's tailgate to allow the pin box to clear. Note that the clearance of the lowered tailgate to the trailer needs to be monitored during hookups, since some combinations of truck and trailer have little or no clearance.
Back the truck slowly toward the trailer until the truck's hitch contacts the bottom of the pin box and the kingpin slides into the receiver. During the hitching maneuver, the bottom of the trailer's pin box should come into contact with the hitch skid plate ramp. Then latch the 5th wheel hitch in closed position per the instructions of the 5th wheel hitch manufacturer. Be sure to consult your hitch manufacturer's owner's manual for proper hitching procedure.
The pull test verifies that the trailer is properly hitched before traveling. After hitching, securely chock the trailer tires and ensure the landing gear is firmly on the ground and the tow vehicle is in park with the emergency brake engaged. Release the emergency brake, apply the trailer brakes, and slowly pull the trailer forward. If properly hitched, the wheel blocks and trailer brakes should keep the truck from moving forward. If the trailer separates from the hitch, the truck will move forward while leaving the trailer behind. Failure to perform a pull test may result in severe property damage, serious personal injury, or death.
After successfully performing the pull test, fully raise the landing gear per manufacturer's recommendations. Then check and inspect all electrical circuits for proper operation, including clearance lights, turn signals, and stop lights. Finally, remove and store all trailer wheel blocks.
Safety glasses should be worn at all times while installing this product. Never exceed the vehicle manufacturer's recommended towing capacity. An unsupported pin box during product removal can result in death, serious personal injury, severe product and/or property damage—properly support the pin box throughout installation. Do not attempt to hitch the trailer by using trailer jacks to lower the trailer and kingpin, as this could result in the kingpin coming to rest on top of the skid plate instead of within the hitch opening.
Using trailer jacks to lower the trailer and kingpin could result in the kingpin coming to rest on top of the skid plate instead of within the hitch opening. This could result in the trailer separating from the hitch, which may result in death or serious injury. Always use the trailer landing gear and adjust it per the manufacturer's recommendation to position the pin box 1/2" to 1" below the hitch skid plate.
After installation, verify that the trailer pulls in a level condition before traveling. Check and inspect all electrical circuits for proper operation, including clearance lights, turn signals, and stop lights. Always check the pin box and its components for damage or any loose nuts and bolts. Ensure the trailer is properly secured against movement during the pull test procedure.
Always check the pin box and its components for damage or any loose nuts and bolts. Be sure the trailer pulls in a level condition before traveling. Periodically inspect the pin box coil spring for condition and any possible damage. If the kingpin is excessively worn, the jaw plate will need to be replaced. Check the condition of the coil spring and replace if damaged or broken. Look for damage on the shock or a disconnected shock, and reconnect or replace if needed.
If the trailer is not level, adjust the pin box or hitch accordingly. The 5th wheel should always be towed while level. Adjustment of the pin box mounting height, the tow vehicle height, or suspension may be necessary to accomplish a level towing condition.
Excessive chucking in the tow vehicle can be caused by damage to the pin box coil spring or unbalanced cargo. Inspect the pin box coil spring for condition and any possible damage. Be sure cargo is balanced from side to side and front to back.
Excessive noise from the pin box area can have several causes: the pin box may not be securely attached to the 5th wheel; the kingpin may be excessively worn (requiring jaw plate replacement); the coil spring may be damaged or broken (requiring replacement); the shock may be damaged or disconnected (requiring reconnection or replacement); or the noise may be coming from the hitch mechanism itself. Verify that the pin box is securely attached, check the condition of the coil spring and shock, and consult the hitch manufacturer's guidelines if the noise is coming from the hitch.
When the trailer is unloaded, the pin box may appear too far open (with the hitch plate tilted toward the cab of the truck). This is normal. Observe the pin box and hitch plate once the trailer is loaded. The pin box will close down as the unit is loaded to the proper pin weight.
The Curt Helux Pin Box is available in seven weight ratings. You must determine your trailer's pin weight by weighing it fully loaded at a certified scale, then match that weight to the correct model. Consult the weight chart on page 1 of the manual to confirm fitment.
You will need: SAE socket set, SAE wrenches, tape measure, box-end wrench set, safety glasses, air compressor, and level.
You must use the new hardware included in the kit. Do not reuse the mounting hardware from the previous pin box.
A minimum of two people are required to support the weight of the pin box during installation. Three people is recommended. Alternatively, a forklift may be used.
Torque the 5/8" bolts to 120 ft-lb±5 lb.
Yes. The pull test verifies that the trailer is properly hitched before traveling. Failure to perform a pull test may result in severe property damage, serious personal injury, or death.
Never exceed the vehicle manufacturer's recommended towing capacity. Additionally, always properly support the pin box during removal and installation—an unsupported pin box can result in death or serious injury.
If the trailer separates from the tow vehicle during the pull test, the trailer will separate from the hitch and the truck will move forward while leaving the trailer behind. Repeat the hitching procedure. Ensure the trailer is properly positioned with the pin box 1/2" to 1" below the hitch skid plate, and verify that the kingpin is fully inside the jaw opening.
The kingpin may not be fully inside the jaw opening if the trailer's pin box is positioned too high. Ensure the bottom of the trailer's pin box is 1/2" to 1" below the hitch skid plate using the trailer landing gear. Do not use trailer jacks to lower the trailer, as this can cause the kingpin to rest on top of the skid plate instead of within the hitch opening.
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