4pcs .98in Stainless Steel Boat Trailer Hub Grease with – Fit for 4- and 5- Marine Hubs

1. It is designed to be used in most 4 and 5 Screw/Fastener hubs. 2. Reduces failure of marine trailer wheel bearings and extends bearing life, prevent water and dirt from entering the hub and bearings. 3. Made of quality stainless steel material, and durable. 4. Automatic pressure relief, grease can be added to the hub via an easily accessible grease connection located in the center of the piston. 5. By pressing the edge of the movable piston, the level (and pressure) of the lubricant can be checked quickly. Specification: Condition: 100% Brand New Item Type: Hub Bearing Kit Material: Stainless Steel Color: As picture shown Application: Suitable for hub of boat and trailers Package List: 4 x Bearing 4 x Cover Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.

• Universal Fit- Designed to fit most 4- and 5- marine trailer hubs ensuring broad compatibility across common boat trailer no need for custom adapters or modifications—just install and go.
• Extended Bearing Life- Reduces premature bearing failure by up to 60% actively , salt, and road debris from penetrating the hub assembly delivering measurable longevity gains for wheel bearings in harsh coastal or freshwater environments.
• Build- -crafted from premium 304 stainless steel offering superior resistance to , oxidation, and electrolytic ideal for saltwater exposure, frequent washdowns, and -term outdoor storage.
• Pressure Relief- Features an integrated automatic pressure-relief system allowing safe, controlled venting during grease injection eliminating over-pressurization risks that can damage seals or cause hub leakage under thermal expansion.
• Lubrication Check- Press the piston lightly to instantly verify grease and pressure status no tools, no disassembly—just visual and tactile feedback streamlining routine maintenance and supporting proactive trailer care schedules.