SKF 21040 Wheel Seal - Front
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SKF

SKF 21040 Wheel Seal - Front

Brand SKF 21040
Position Front
Width 0.315
Outside Diameter 2.563
Sealing Surface Type Nitrile
Shaft Diameter 2.126
Fits Nissan · 8 vehicles

Nitrile sealing surface. Provides dependable contact for hub sealing performance.

Precision dimensions. Sized for the specified shaft and housing interface.

SKF engineering heritage. Built from a long history of seal design and material development.

Cross-references 145821040, 975921040 and CHR 21040 for the same application. See all 3.

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Wheel Seal Overview

SKF wheel seal 21040 is a front wheel seal for select Nissan trucks and pickups. It is built to keep lubricant contained and help block contaminants at the hub, supporting reliable driveline sealing in demanding service conditions.

Key Features

  • Nitrile sealing surface for dependable sealing performance.
  • Specific dimensions: 0.315 in. width, 2.563 in. outside diameter, and 2.126 in. shaft diameter.
  • Engineered for front wheel applications on select Nissan 620 and Nissan 720 models.
  • SKF seal design and material selection are based on long-running sealing development.

Detailed Description

SKF 21040 is a wheel seal made for front hub sealing applications on 1978-1979 Nissan 620 and 1980-1985 Nissan 720 models. The nitrile sealing surface is selected for its sealing characteristics, while the listed dimensions help ensure proper fit at the shaft and housing interface. This part number 21040 is also cross-referenced to 145821040 and 975921040 for the same application.

SKF has a long history in seal engineering, including early integrated shaft seal development and continued work on bonding methods and material design. For Nissan 620 and Nissan 720 service, that focus translates into a seal built to match the application environment and retain lubricants while helping keep out road debris and moisture.

What It Is Used For

  • Oil or grease leakage at the wheel hub
  • Contamination entering the sealed hub area
  • Wear caused by degraded sealing surfaces
  • Loss of sealing integrity from age or heat exposure

Installation Notes and Tips

Verify shaft diameter, outside diameter, and width before installation. Clean the hub and sealing surfaces thoroughly, and inspect the mating components for wear or scoring that could affect seal life. Confirm front-position fitment for the correct Nissan 620 or Nissan 720 application before assembly.

Quality Assurance

SKF manufactures seals to specific designs using premium materials and quality-focused production standards. The brand’s sealing heritage spans more than a century, with products developed to support long service life and safe operation.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
1985Nissan720RWDFront—
1984Nissan720RWDFront—
1983Nissan720RWDFront—
1982Nissan720RWDFront—
1981Nissan720RWDFront—
1980Nissan720RWDFront—
1979Nissan620RWDFront—
1978Nissan620RWDFront—
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
145821040975921040CHR 21040