CURT 2024044568 · 18,000 lb series
Optimal loaded pin weight: 1,880–2,377 lb
Suspension spring rating: 1,100 lb
Identify CURT Helux Fifth-Wheel Pin Boxes by MPN & Pin Weight
The conventional fifth-wheel Helux and the gooseneck Helux are different connections. This page identifies the seven fifth-wheel versions by manufacturer part number, suspension spring rating and CURT's recommended loaded pin-weight range. A similar black housing is not a substitute for reading the exact MPN.
18,000 lb trailer-capacity group
Models 2024044568, 2024044567 and 2024044569 are the 18K fifth-wheel variants, with different optimal pin-weight ranges.
24,000 lb trailer-capacity group
Models 2024122233, 2024044570, 2024044571 and 2024044572 are in the 24K range. The higher capacity does not mean the spring suits every pin weight.
Helux manufacturer numbers and spring ranges
| CURT MPN | Optimal loaded pin weight | Spring rating | Trailer capacity |
|---|---|---|---|
| 2024044568 | 1,880–2,377 lb | 1,100 lb | 18,000 lb |
| 2024044567 | 2,378–2,722 lb | 1,250 lb | 18,000 lb |
| 2024044569 | 2,723–3,165 lb | 1,500 lb | 18,000 lb |
| 2024122233 | 3,166–3,712 lb | 1,500 lb | 24,000 lb |
| 2024044570 | 3,713–4,332 lb | 1,800 lb | 24,000 lb |
| 2024044571 | 4,333–4,900 lb | 2,000 lb | 24,000 lb |
| 2024044572 | 4,901–6,000 lb | 2,300 lb | 24,000 lb |
Optimal loaded pin-weight ranges are CURT's selection guidance. The spring rating is a separate specification, not the same as the trailer's pin weight or gross trailer rating.
Identify an existing Helux before replacing it
- Locate the eight- or ten-digit manufacturer number on the assembly or original documentation. Match it to the exact row rather than using trailer GVWR alone.
- Verify a conventional fifth-wheel kingpin connection and Rhino Box mounting pattern. The Helux gooseneck models belong to a different part-number family.
- Inspect the coil spring, shock absorber, kingpin, upper plate, pivot points and mounting hardware for visible wear, damage or missing pieces. Follow the manufacturer's service instructions.
- Confirm the trailer's actual loaded pin weight at a scale. CURT uses that measured value to choose the appropriate suspension spring.
- Check the individual store listing for its actual condition, completeness and availability. Viewing or pickup at UsedRVParts in Kelowna is by appointment.
Capacity and fit: The vehicle, hitch, pin box, RV frame and suspension must all be suitable for the towing arrangement. Do not exceed the lowest applicable rated component. A model with a higher maximum capacity is not automatically a better spring match.
Find the exact Helux model
Each link opens the corresponding store item for photos, condition and availability.
CURT 2024044567 · 18,000 lb series
Optimal loaded pin weight: 2,378–2,722 lb
Suspension spring rating: 1,250 lb
CURT 2024044569 · 18,000 lb series
Optimal loaded pin weight: 2,723–3,165 lb
Suspension spring rating: 1,500 lb
CURT 2024122233 · 24,000 lb series
Optimal loaded pin weight: 3,166–3,712 lb
Suspension spring rating: 1,500 lb
CURT 2024044570 · 24,000 lb series
Optimal loaded pin weight: 3,713–4,332 lb
Suspension spring rating: 1,800 lb
CURT 2024044571 · 24,000 lb series
Optimal loaded pin weight: 4,333–4,900 lb
Suspension spring rating: 2,000 lb
CURT 2024044572 · 24,000 lb series
Optimal loaded pin weight: 4,901–6,000 lb
Suspension spring rating: 2,300 lb
Fifth-wheel or gooseneck?
The separate CURT Helux gooseneck pin-box guide covers models designed to couple to a gooseneck ball. Those models should not be substituted for the fifth-wheel kingpin versions shown here.
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