Sconva Vortex Threaded Trailer Hub Dust Caps 2 5/16" (Pack of 2) — 5‑Bolt Dexter 48355V, O‑Ring Seal

When a threaded hub cap cracks or the original goes missing, the right replacement prevents grease loss and keeps contaminants out. These Sconva 81143 caps are made for marine and utility trailers built around Dexter/Tie Down Engineering Vortex hubs rated roughly 1,250–1,750 lb; they arrive as a two-piece pack and include an O-ring to ensure a tight seal and simpler installation.

How do these threaded replacement caps fit my Dexter Vortex hub?

The Sconva 81143 caps install by screwing into the hub’s outer threads and tighten over the spindle area. They are specifically sized for Vortex hubs with five bolt holes and an outer thread diameter of 2 5/16".

• Compatible with Dexter/Tie Down Vortex hub part numbers including 48355V.
• Not compatible with 6-lug hubs—only 5-bolt Vortex hub kits.
• Outer thread diameter: 2 5/16" for correct engagement.

What makes the Sconva cap durable and leak-resistant?

These caps are molded from reinforced hard plastic engineered to resist cracking and corrosion in marine and road conditions. Each cap ships with a rubber O-ring that compresses to block grease seepage and keep dirt, water, and road debris from entering the hub.

• Solid hard-plastic body resists impact and saltwater corrosion.
• Included rubber O-ring provides a snug, grease-tight seal.
• Threaded design reduces chance of accidental dislodging compared with push-fit caps.

How easy is installation and maintenance?

Installation is straightforward: clean the hub threads, place the O-ring into the cap groove, and screw the cap into the hub until the O-ring seats. Removal is equally simple when you need to inspect bearings, repack grease, or perform other routine maintenance.

• Threaded cap turns on and off without special tools in most cases.
• O-ring replacement is inexpensive and keeps seal performance fresh.
• Pack of two allows immediate spare or replacement for both trailer sides.

Who is this for: The Sconva 81143 Vortex caps are aimed at trailer owners, boaters, and fleet managers who maintain 5-bolt Dexter/Tie Down Vortex hubs and want a reliable, threaded dust cap that stops grease leaks and excludes contaminants. Choose these if your trailer hubs are specified for 1,250–1,750 lb Dexter Vortex assemblies and have a 2 5/16" outer thread diameter. These caps are especially useful as a weatherproof replacement for worn or broken original caps and as a cost-effective spare to keep your trailer road-ready.