Stemco Axle Hub Cap

Stemco Axle Hub Caps: Engineered for the Long Haul

When it comes to protecting wheel ends on commercial trucks and trailers, few names carry the weight that Stemco does. Stemco has provided the trucking industry with reliable hub caps for more than 60 years, continually recognizing the need for tougher, long-lasting products that meet the performance, design, and price requirements of any fleet. That decades-long commitment to engineering excellence is precisely why the trucking industry recognizes Stemco hub caps as the benchmark.

Browse the full selection of axle hub caps and you'll find that Stemco's lineup is anything but one-size-fits-all. Stemco, the industry leader in hub caps, has developed a comprehensive offering for all applications, meeting the performance, design, and price requirements of today's national and international fleets — covering both oil and grease lubrication systems across trailer, drive, and steer axle configurations.

Signature Product Lines

Sentinel® Hub Caps — Sentinel® Hub Caps provide an unmatched filtering system to eliminate contamination from dirt, dust, sand, and water, making it easy to visually monitor lube levels, and featuring an innovative design and durable construction that helps extend equipment life and increase profitability. Stemco provides four options to deploy Sentinel Technology, including the tamper-proof Sentinel Hub Cap and Integrated Sentinel hub caps that integrate the Sentinel features into the window with fewer components and greater wheel end visibility.

Defender™ Hub Caps — Built to withstand the harshest conditions, the Stemco Defender™ hub cap is made from an ultra-durable, corrosion-free composite material and is available with a permanently bonded, leak-proof window. Defender composite hub caps offer superior corrosion protection, are available in oil and grease applications, and come in a wide variety of vent options — from the trademark red plug to the Sentinel ESP plug or Integrated Sentinel Technology.

Traditional Aluminum Series (340 & 343) — The traditional aluminum series 340 and 343 provide durability with the trademark red plug to allow venting of the hub cap, and the cast aluminum construction prevents warpage while delivering superior durability and heat-dissipation properties. The aluminum Stemco hub cap has provided safe and secure wheel end protection for over 60 years, and is equipped with a distinct red rubber plug making it easy to differentiate from lower quality competitors.

Stamped Steel Hub Caps — Stemco Stamped Steel grease hub caps are manufactured from 14-gauge steel and have a protective yellow chromate plating with a clear lacquer coating for additional protection from corrosion. This hub cap features high quality steel and a proven stamping process designed for optimum heat dissipation and durability.

PSI™ Hub Caps — Stemco MTIS/PSI™ hub caps are available in both oil and grease versions for several popular applications, with oil hub caps featuring a side fill plug and a standard window with oil fill lines. These caps are purpose-built to integrate directly with automatic tire inflation systems.

ESP & ESP Plus Technology

ESP and ESP Plus are Stemco's top-of-the-line hub cap plug solutions — protecting lubricant integrity by preventing moisture and other contaminants from entering the hub assembly, and featuring an advanced design and innovative shielding that are simple, yet vital, ways to maintain wheel end safety. Sentinel Technology can also be retrofitted on existing wheel ends with replacement hub cap plugs, or on drive axles with the Stemco DAV Drive Axle Vent system.

Made in the USA

Stemco hub caps are available for oil, semi-fluid grease, and hard pack grease applications to meet the performance, design, and price requirements of today's fleets worldwide, with full-line coverage for trailer and tractor applications — and they are proudly made in Longview, TX. Whether you're maintaining a single trailer or managing a large commercial fleet, Stemco's axle hub cap lineup delivers the right solution for every wheel end.