SKF 31203 Wheel Seal - Front

SKF 31203 Wheel Seal Overview

SKF 31203 is a wheel seal built for driveline and axle sealing applications where lubricant retention and contamination control matter. With a nitrile sealing surface and precise dimensions, it supports dependable sealing performance for service work on vehicles such as Honda Civic and Toyota Corolla applications where the correct wheel seal size is critical.

• Part number: 31203
• Wheel seal for driveline and axle sealing systems
• Nitrile sealing surface type for common wheel-end sealing needs
• Outside diameter: 4.179 in.
• Shaft diameter: 3.125 in.
• Width: 0.290 in.
• SKF engineering and manufacturing standards for consistent fit and function

Detailed Product Description

SKF 31203 is a precision wheel seal designed to help keep lubricants in the wheel-end assembly and contaminants out. The seal uses a nitrile sealing surface and is specified with a 4.179-inch outside diameter, 3.125-inch shaft diameter, and 0.290-inch width. Those dimensions make part number 31203 a direct-reference option when matching an OE-style wheel seal by size rather than by appearance alone. SKF has a long history of seal development, and this wheel seal reflects that focus on material selection and dimensional accuracy for demanding driveline service.

This part cross-references Chrysler (e.g., 47421, 3858316) for the same application.

Common Problems This Seal Helps Address

• Gear oil leakage at the wheel-end seal area
• Contamination entering the hub or axle assembly
• Premature wear caused by degraded sealing surfaces
• Service issues from an incorrect seal diameter or width
• Noise or driveline concerns related to low lubricant retention

Installation Notes and Tips

Verify the shaft diameter, outside diameter, and width before installation to confirm the seal matches the original specification. Inspect the sealing surface, hub bore, and axle surface for wear, scoring, or corrosion before pressing in the new seal. Clean the mating surfaces thoroughly and install the seal squarely to avoid distortion. For fitment-based searches, this part is commonly referenced for Honda Civic and Toyota Corolla wheel seal applications, but final selection should always follow the measured dimensions and vehicle service data.

Quality Assurance

SKF manufactures seals to specific designs using premium materials and established quality standards. Part number 31203 is built for long service life and reliable sealing performance in wheel-end applications.