SKF 16503 Wheel Seal - Front Inner or Rear

SKF Wheel Seal for Rear Applications

SKF 16503 is a wheel seal built for rear axle sealing on select Honda, Isuzu, and Mazda applications. It is specified with a nitrile sealing surface and precise dimensions to help maintain lubricant retention and keep road contaminants out.

Key Features

• Part number: SKF 16503
• Wheel seal for driveline and axle sealing applications
• Nitrile sealing surface type for dependable sealing performance
• Outside diameter: 2.172 in.
• Width: 0.315 in.
• Shaft diameter: 1.654 in.
• Engineered by SKF, a long-established seal manufacturer

Detailed Product Information

SKF 16503 is designed around exact seal dimensions and premium material selection to match the demands of the application and operating environment. SKF has a long history in seal development, including early integrated shaft seal design work, and this wheel seal reflects that focus on controlled sealing performance. For rear wheel seal service on 1985-1987 Honda Civic, 1979-1983 Mazda 626, and 1979-1983 Mazda RX-7, SKF 16503 provides a direct-fit sealing solution. It also applies to 1981-1987 Isuzu Pickup and 1984-1987 Isuzu Trooper applications. This part cross-references Continental 66715 for the same application.

What This Wheel Seal Helps Address

• Gear oil or lubricant seepage at the wheel end
• Contamination entering the hub or axle seal area
• Seal wear from age, heat, and road exposure
• Noisy or rough operation caused by compromised sealing surfaces
• Service replacement needs on rear axle sealing points

Installation Notes and Tips

Confirm shaft diameter, outside diameter, and width before installation to match the hub or axle housing. Inspect the sealing surface for scoring, corrosion, or debris, and clean the bore thoroughly before pressing in the new seal. For best results, verify the vehicle application by year, make, model, and position before service. Fits 1985-1987 Honda Civic, Rear. Fits 1981-1987 Isuzu Pickup, N/A. Fits 1986-1987 Isuzu Trooper, N/A. Fits 1984 Isuzu Trooper, N/A. Fits 1979-1983 Mazda 626, Rear. Fits 1979-1983 Mazda RX-7, Rear.

Quality Assurance

SKF manufactures seals to specific designs using premium materials and controlled production standards. The brand’s seal engineering focus is aimed at long service life and reliable sealing performance in automotive driveline and axle applications.