SKF 23420A Transfer Case Input Shaft Seal

Transfer Case Input Shaft Seal for Ford Super Duty

SKF 23420A is a transfer case input shaft seal built for controlled sealing at the transfer case input shaft. It uses a polyacrylate sealing surface and precise dimensions to help maintain lubricant retention while keeping dirt and moisture out of the transfer case assembly.

Compatible with 2011-2015 Ford F-250 Super Duty and 2011-2015 Ford F-350 Super Duty applications, this seal is a direct-fit service part for transfer case sealing repair. The SKF 23420A part number is also referenced for BC3Z7B215A interchange applications.

Key Features

• Transfer case input shaft seal for drivetrain sealing service
• Polyacrylate sealing surface type for consistent contact at the shaft
• Outside diameter: 3.165 in.
• Shaft diameter: 2.323 in.
• Width: 0.374 in.
• SKF 23420A for Ford Super Duty transfer case applications

Detailed Description

SKF 23420A is engineered for the transfer case input shaft area, where sealing accuracy matters for lubricant control and contamination resistance. SKF has a long history in seal design and manufacturing, and this part reflects that focus with application-specific dimensions and material selection. The polyacrylate sealing surface is specified to support reliable sealing performance in drivetrain environments.

Use this seal when servicing 2011-2015 Ford F-250 Super Duty or 2011-2015 Ford F-350 Super Duty transfer case components. The SKF 23420A designation helps identify the correct seal for the application, and the BC3Z7B215A cross-reference supports parts matching for the same use case.

Common Issues This Seal Can Address

• Transfer case fluid leaking at the input shaft
• Contamination entering the transfer case through a worn seal
• Fluid seepage after transfer case service
• Seal wear from age, heat, or shaft movement
• Loss of proper lubricant retention in the transfer case

Installation Notes and Tips

Inspect the input shaft, sealing bore, and surrounding surfaces before installation. Clean the sealing area thoroughly and verify the shaft diameter and seal dimensions match the application before pressing the seal into place. Proper alignment during installation helps prevent premature wear and leakage.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using premium materials and established sealing technology. The brand’s long-standing focus on shaft sealing supports dependable fit and function for transfer case service.