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The Xtractor™ redefines the purpose of the heavy-duty hub cap—from passive containment to active protection.

Loading image: HexThread Access Cartridge on Xtractor hub cap HexThread Access Cartridge on Xtractor hub cap

HexThread™ Front Access Cartridge

The Xtractor is equipped with a patent-pending HexThread™ front access cartridge which allows for easy hub oil service and internal inspection—without removing the hub cap or disturbing the flange gasket. This feature simplifies routine maintenance and supports early detection of wear, helping to prevent expensive failures.

Loading image: 3-stage oil filter with hub oil filtering through it 3-stage oil filter with hub oil filtering through it

3-Stage Magnetic Oil Filter

The Xtractor features a 3-stage magnetic filter that captures large debris and fine ferrous particles suspended in hub oil—protecting seals and bearings from pitting, scoring, corrosion, and galling. This patent-pending, reusable filtration mechanism keeps lubrication oil cleaner, longer—helping safeguard critical axle components especially in demanding, high-load environments.

Made in the USA with performance-driven materials

Loading image: Close up of hub cap with Hub Corporation words stamped on it Close up of hub cap with Hub Corporation words stamped on it

Ultra-Durable Materials

Precision cast and machined from premium aluminum alloy, The Xtractor delivers unmatched strength, heat resistance, heat dissipation, and sealing performance.

Loading image: Clear plastic hub cap sight glass on a black pedestal against a dark background Clear plastic hub cap sight glass on a black pedestal against a dark background

UV-Stabilized Sight Glass

The UV-stabilized, high-heat polycarbonate sight glass delivers exceptional clarity, impact resistance, and thermal stability at any temperature.

Loading image: Close-up of a blue 'X' logo on a rubber vent plug Close-up of a blue 'X' logo on a rubber vent plug

Pressure-Balancing Plug

A high-performance, rubber plug functions as both a vent and fill port—designed to withstand the rigors of heavy-duty operation without cracking or leaking.

Loading image: Truck on a road with a close-up of The Xtractor hub cap against a dark sky. Truck on a road with a close-up of The Xtractor hub cap against a dark sky.

The XTRACTOR™

The New Definition of Wheel-End Protection
Loading image: Truck with illuminated headlights in a dark diesel mechanic shop Truck with illuminated headlights in a dark diesel mechanic shop

"By maintaining a cleaner oil system, The Xtractor preserves the fluid’s physical integrity and thermal stability—critical factors in enabling lubrication oil to perform at its highest efficiency."

Dr. M. Tree, Ph.D., M.E., Tribologist

FAQs

What makes The Xtractor unique?

Most hub caps are just covers. The Xtractor is a performance-driven component, actively filtering foreign particulates from circulating in hub oil.

What problem does it solve?

Traditional hub caps allow metal & debris to continually circulate through your wheel-end system. The Xtractor removes these contaminants to actively protect your critical axle components.

What vehicles is it compatible with?

The Xtractor is engineered for standard Class 7 and 8 trucks and trailers, with fitment options for most standard hub configurations.

Is it field tested and proven?

Of course. The Xtractor has been tested in real-world fleet operations and validated by experienced mechanics and logistics professionals.

Where is The Xtractor manufactured?

The Xtractor is proudly designed, engineered, and manufactured in the USA.

Is it easy to install?

Absolutely. The Xtractor fits just like any other hub cap. Gasket, 6 bolts, torque, then fill.

Where can I buy The Xtractor?

You can purchase The Xtractor through our online store or contact our team directly for fleet pricing and bulk orders.

Cross Reference

This product is manufactured by The Hub Corporation and is not affiliated with, endorsed by, or sponsored by any other third party. Any references to third-party part numbers, trademarks, or brand names are for cross-reference and compatibility purposes only.

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