National 711160 Transfer Case Input Shaft Seal

Transfer Case Input Shaft Seal for Nissan and INFINITI

National 711160 is a premium transfer case input shaft seal built for dependable sealing performance in drivetrain service. It is engineered with ethylene acrylate (Vamac-type) material and a bi-helix seal design to help maintain a tight seal at the transfer case input shaft.

Compatible with 2014-2023 INFINITI QX80, 2017-2023 Nissan Armada, and 2011-2013 INFINITI QX56, this seal is a direct-fit service part for common transfer case sealing repairs. The National 711160 part number is also referenced for OE-style replacement needs in these applications.

Key Features

• Transfer case input shaft seal for drivetrain sealing service
• Premium grade construction from National
• Ethylene acrylate (Vamac-type) sealing material
• Bi-helix seal design for consistent sealing contact
• Black finish
• Shaft diameter: 48 mm
• Housing bore: 65 mm
• Oil seal part description

Detailed Description

National 711160 is a transfer case input shaft oil seal designed around the dimensions and material requirements of modern SUV drivetrains. National has supplied sealing solutions for more than 75 years, and this seal reflects that focus with a premium-grade construction and an ethylene acrylate sealing compound selected for durability in demanding operating conditions. The 711160 part number is used for 2014-2023 INFINITI QX80, 2017-2023 Nissan Armada, and 2011-2013 INFINITI QX56 transfer case service.

This seal is intended for applications where the transfer case input shaft needs a precise sealing interface to help retain lubricant and keep contaminants out. This part cross-references Monroe Shocks & Struts (e.g., 331111LA0A) for the same application.

Common Issues This Seal May Address

• Transfer case fluid seepage at the input shaft
• Visible oil residue around the transfer case housing
• Loss of sealing integrity from worn or hardened seal material
• Contamination entering the transfer case through a damaged seal
• Noise or driveline concerns associated with low transfer case fluid level

Installation Notes and Tips

Verify shaft diameter and housing bore dimensions before installation. Inspect the input shaft surface for wear, scoring, or corrosion, since seal performance depends on a clean and smooth sealing surface. Clean the bore thoroughly and install the seal squarely to avoid distortion. Confirm the transfer case is filled to the correct fluid level after service.

Quality Assurance

National is a long-established sealing brand with a history of supplying premium sealing solutions and engineering products for current vehicle platforms. Part number 711160 is built to meet the dimensional and material requirements expected for transfer case sealing service on Nissan Armada, INFINITI QX80, and INFINITI QX56 applications.