Ximoon Trailer Hub Dust Caps for Dexter Vortex 81143 — 2-Pack Threaded 2-5/16" with O‑Ring Seal

The Ximoon 81143 replacement caps are threaded trailer hub dust caps made to fit Dexter Vortex and similar 1250–1750 lb hub kits, delivered as a two-pack with O-ring sealing for a contaminant-resistant fit.

If you maintain boat trailers, utility trailers or small axle assemblies, keeping hub internals clean and lubricated is essential. These Ximoon 81143 caps are engineered to replace worn or missing threaded dust caps on Dexter Vortex-style hubs (including references such as 48355V, K71-G01-73 and 21-261) and comparable 1250–1750 lb hubs. The caps arrive as a pair, include an O-ring for a secure seal, and use a common outer thread diameter of 2 5/16" for direct replacement.

Will these Ximoon caps fit my Dexter Vortex hub?

They are designed specifically for a range of Dexter Vortex hub part numbers and many tie-down engineering vortex kits. Confirm fit by matching thread diameter and hub model numbers before purchase.

• Compatible with Dexter Vortex references such as 48355V, K71-G01-73 and 21-261.
• Fits hub weight classes from 1250 lb to 1750 lb.
• Outer threaded diameter: 2 5/16" — use this measurement to verify compatibility.
• Includes O-ring to help prevent water and debris ingress into bearings.

How durable and weather-resistant are these replacement caps?

Ximoon 81143 caps are manufactured from robust materials intended for marine and trailer environments; the threaded design plus O-ring improves resistance to contaminants and routine wear.

• Constructed from highly durable materials to withstand road and marine exposure.
• O-ring provides a tighter seal than open caps, reducing contamination risk.
• Threaded form minimizes accidental loss during use compared to press-fit caps.
• Sold as a two-pack so you have a spare or fit both sides of an axle at once.

How simple is installation and what tools are required?

Installation is straightforward: the threaded cap screws into the hub and can be tightened or removed in minutes. No specialized tools are usually necessary beyond a clean rag and, if preferred, a gentle hand-tightening tool to seat the O-ring.

• Threaded cap design allows quick screw-in installation and removal.
• O-ring must be seated properly for a contaminant-free fit.
• Typical install time: a few minutes per cap; no special machining required.
• Comes as a 2-pack so both hub ends can be serviced together.

What should I know about service, returns, and support?

Ximoon provides customer service for product issues and will respond to dissatisfaction through the seller contact process. If a cap arrives damaged or doesn’t fit, reach out through the order history contact path for support.

• Contact seller via order history > contact seller for service requests.
• Seller aims to address product dissatisfaction responsibly and promptly.
• Keep proof of order and photos of the part and threads to speed resolution.

Who is this for: Owners, mechanics and fleet managers who service light trailers, boat trailers and small-axle assemblies that use Dexter Vortex-style hubs will benefit from these Ximoon 81143 replacement caps. They are especially useful when replacing lost or damaged threaded dust caps on 1250–1750 lb hubs, when you want an O-ring sealed option for improved protection, or when you prefer the convenience of a two-pack to service both sides of an axle at once.