Best Boat Trailer Jack Wheel Options for Easy Towing
Find the right wheel for your boat trailer jack to improve mobility, stability, and safety during hitching and travel. This guide highlights five solid choices, ideal for boat trailers and other light to medium trailers. Best for replacing worn wheels, upgrading load capacity, or improving maneuverability on rough surfaces. The picks below are suited for different uses—from lightweight towing to heavy-duty camping trailers—and include a quick comparison to help you choose.
| Product | Load Capacity | Wheel Diameter | Material | Best For |
|---|---|---|---|---|
| XIANGZI 6-Inch Boat Trailer Jack Wheel Replacement | 1200 lbs | 6 in | Polyamide | High-strength replacement |
| NBJINGYI 6″ Trailer Jack Wheel | 1200 lbs | 6 in | Poly | Universal fit, complete kit |
| UNLRAE Trailer Jack Wheel | 1200 lbs | 6 in | Nylon | Durable, versatile |
| Skelang 6″ Trailer Jack Caster | 1200 lbs | 5.7 in | Polyamide | Hardwearing, precise fit |
| CURT 6-Inch Replacement Boat Trailer Jack Wheel | — | 6 in | Plastic | Brand-mitted compatibility |
XIANGZI 6-Inch Boat Trailer Jack Wheel Replacement

Features a 6-inch wheel with a 5/8-inch bore and 2-inch hub length, built from durable polyamide for longevity. It supports up to 1200 lbs, making it a strong replacement option for common trailer jacks. Best for boat trailers that require sturdy, ready-to-install wheels with minimal modification. A practical choice for frequent hitching and unhooking tasks.
Who it’s for: boat trailer owners needing a reliable, high-capacity wheel replacement. Why selected: strong 1200-lb capacity and precise 6-inch sizing fit most standard jacks. Caution: confirm bore and hub specs match your jack before ordering.
TOWKING 1200lbs 6inch Boat Trailer Jack Wheel

Designed for 1200 lbs capacity jacks, this 6-inch wheel includes a 5/8-inch bore and a 2-inch wide wheel, making it a universal replacement for many boat trailer jacks. It ships with mounting hardware for straightforward installation. Best for upgrading older jacks that need robust, dependable replacement wheels.
Who it’s for: owners replacing worn wheels on mid-weight trailers. Why selected: solid geometry and included hardware streamline setup. Caution: verify mounting hardware compatibility with your jack’s axle bolt configuration.
NBJINGYI 6″ Trailer Jack Wheel with 3/8″ Bolt

1,200 lb capacity in a full kit format, including a 3/8″ axle bolt and locking nut for a quick install. The 6-inch diameter and 5/8-inch bore provide universal compatibility with many tongue jacks. Best for DIY trailer upgrades or new installations on a variety of trailers, including boats and RVs.
Who it’s for: anyone needing a complete hardware-inclusive replacement. Why selected: comprehensive install kit minimizes extra shopping. Caution: ensure the included bolt size matches your jack’s axle and nut thread.
CURT 28912 6-Inch Replacement Boat Trailer Jack Wheel

CURT’s replacement caster wheel features bolt and bushing integration with a durable black plastic construction. It is compatible with CURT marine jacks and serves as a reliable, straightforward swap for worn caster wheels. Best for CURT system users seeking brand-mitted reliability.
Who it’s for: CURT jack owners needing a brand-consistent replacement. Why selected: direct compatibility with CURT jacks. Caution: may be less universal than non-brand wheels—check fit with non-CURT jacks.
UNLRAE Trailer Jack Wheel

6-inch nylon wheel rated up to 1200 lbs with corrosion-resistant nylon material designed for longevity. It emphasizes wear resistance and grip on varied surfaces, making it a versatile choice for many trailer types. Best for frequent hitching and on-ground maneuvering where durable wheels are a priority.
Who it’s for: trailer owners seeking a durable nylon wheel with broad compatibility. Why selected: strong, wear-resistant nylon construction. Caution: confirm bore and hub dimensions match your jack before purchase.
Skelang Boat Trailer Jack Caster 6″

Made of polyamide with a 5/8-inch bore, this caster supports up to 1200 lbs and features a hub length of 2 inches. The 5.7-inch wheel diameter and 1.9-inch width are tuned for stable rolling and easy steering on uneven surfaces. Best for users needing a precise, durable replacement with clear sizing.
Who it’s for: buyers prioritizing precise fit and rugged build. Why selected: 90 Shore D hardness and wide operating range support reliability. Caution: ensure your jack’s mounting clearance accommodates the 2-inch hub length.
Buying Guide: Key Purchase Considerations
How to choose the right wheel for a boat trailer jack:
- Load capacity: Most listed options handle 1200 lbs. Match to your trailer tongue weight and typical hitch loads.
- Wheel diameter and bore: Ensure the wheel diameter and bore size fit your jack’s axle and opening. Typical sizes are 6 inches with 5/8-inch bores.
- Material and durability: Nylon and polyamide offer wear resistance and stiffness. Consider environmental exposure (salt, moisture) and surface types.
- Mounting hardware: Some include bolts, nuts, or complete hardware kits. If not included, you’ll need matching fasteners.
- Brand compatibility: CURT wheels suit CURT jacks; universal wheels offer broader compatibility but double-check fit.
- Installation ease: Look for wheels with simpler installation and clear alignment features to reduce downtime.
FAQ
- Q: Are 6-inch wheels universal for all boat trailer jacks? A: Most 6-inch wheels with a 5/8-inch bore fit a wide range of jacks, but always confirm bore, hub length, and axle compatibility.
- Q: Do I need installation hardware? A: Some wheels include mounting hardware; others require separate bolts, washers, and nuts compatible with your jack.
- Q: What material is best for outdoor use? A: Nylon and polyamide offer good wear resistance and durability in outdoor conditions, including moisture and salt exposure.
- Q: Can I mix wheels on a dual-axle trailer? A: Mixing wheels is generally not recommended due to potential imbalance. Use matched wheels per axle.
- Q: How do I know if a wheel will support my trailer weight? A: Check the wheel’s listed load capacity and compare it to your trailer tongue weight and jack rating.