Composite Steer Hub Cap 4PCS with Gaskets & Bolts - Durable

In this review the reviewer examines a 4PCS composite steer hub cap kit intended for trailer steer axles and explains why it will suit owners needing a lightweight, corrosion-resistant replacement. The kit includes four oil-filled composite hub caps with gaskets, vents, a clear oil window and 24 flange bolts, making it a practical swap for several OEM numbers. The single biggest reason to consider it is the combination of a molded pressure flange, an embedded aluminum ring for even mounting load, and the transparent oil window that simplifies routine maintenance.

Key Features

• Complete kit: Four hub caps plus gaskets and 24 flange bolts let a user service both sides of a steer axle set without sourcing extra parts.
• Corrosion resistance: The high-impact composite body resists salt, chemicals and UV, which helps maintain seal integrity in harsh road conditions.
• Visible oil level: The clear oil window removes the need to disassemble the hub to check lubrication, making routine checks faster and safer.
• Improved sealing: A molded pressure ridge on the flange and a one-way vent plug reduce the chance of contamination and help prolong bearing life.
• Even mounting load: An embedded aluminum ring distributes bolt torque evenly across the flange to help prevent leaks and warping.

Who It's For

This kit is a good fit for trailer owners, fleet mechanics and DIY technicians who need a direct replacement for common steer hub cap part numbers like SKF 1612, 1711 and Stemco 343-4024, and for those who prefer a lightweight composite cap over heavier metal options. The included bolts and gaskets make it practical for fast installs on trucks and trailers with compatible 6-bolt, 4 1/2' bolt circles.

Those who should look elsewhere include operators requiring OEM-branded metal hub caps for heavy-duty, extreme temperature use or where a manufacturer mandates a specific metal component. Also, if previous reports of leakage are a critical concern, consider a cap from a supplier with extended leak-protection testing or a metal unit with confirmed field history.

Pros & Cons

Pros

• Lightweight composite construction resists corrosion and chemicals while easing handling.
• Clear oil window and vent plug make maintenance checks quick and simple.
• Includes gaskets and 24 flange bolts for a full multi-cap service, which adds value.
• Embedded aluminum ring and molded pressure ridge improve sealing and distribution of mounting load.

Cons

• Some users have reported leakage with certain units, so careful installation and sealing are important.
• Composite design may not suit applications where a metal cap is specifically required by OEM or heavy-duty duty cycles.

Specifications

Contents	4 hub caps, gaskets, window, vent plug, side fill plug, 24 flange bolts
Bolt holes	6
Bolt circle	4 1/2 in
Bolt hole size	5/16 in
Flange OD	5 1/4 in
Flange ID	3 1/2 in
Height	2 5/8 in
Approximate net weight (each)	11 oz

Our Verdict

The 4PCS composite steer hub cap kit is a strong value for owners looking to replace worn plastic or OEM caps with a lightweight, corrosion-resistant alternative that simplifies maintenance with an oil window and includes gaskets and bolts for a complete service. It is a practical choice for many trailer and truck steer axle repairs, but installers should follow proper sealing procedures since isolated leakage reports exist.

Frequently Asked Questions

Will these hub caps fit SKF 1612 or Stemco numbers?
Yes, they are listed as compatible with SKF 1612, 1711 and Stemco 343-4024 and match common replacement numbers noted for several truck makes.

Are bolts and gaskets included?
Yes, the kit includes gaskets and 24 flange bolts so a user can service multiple hubs without separate fasteners.

Can the oil level be checked without removing the cap?
Yes, the clear oil window provides a visible oil level so checks can be done quickly without disassembly.