21-39 - Grease Cap

The 21-39 Grease Cap is a durable, drive-in style cap designed to protect trailer wheel bearings from dirt, debris, and moisture. With a 2.72-inch outer diameter, this cap is specifically engineered for Dexter 5,200 to 7,000 lb axles equipped with 8-bolt hubs. Its robust construction ensures a secure fit, maintaining the integrity of the wheel bearing assembly during operation.

Key Features

• Drive-In Installation: Allows for easy and secure installation without the need for specialized tools.

• Protective Design: Shields wheel bearings from contaminants, extending their service life.

• Compatibility: Fits Dexter 5.2K–7K axles with 8-bolt hubs.

• OEM Replacement: Serves as a direct replacement for Dexter part number 21-39.

Specifications

• • Product Number: 21-39

  • Outer Diameter: 2.72 inches

  • Material: High-strength steel

  • Finish: Corrosion-resistant coating

  • Installation Style: Drive-in

  • Compatibility: Dexter 5.2K–7K axles with 8-bolt hubs