National 710746 Transfer Case Output Shaft Seal - Front

Transfer Case Output Shaft Seal Overview

National 710746 is a transfer case output shaft seal built for specific BMW, Maserati, and Hyundai applications with Magna transfer cases. It uses a fluoro-elastomer sealing material and a clockwise-spiral lip design to help maintain a tight seal at the shaft interface.

Fits 2000-2019 BMW X5, front, and other confirmed BMW xDrive and Maserati full-time 4WD applications with the listed Magna transfer case configurations. Part number 710746 is also referenced in sealing applications that require the same dimensional profile.

Key Features

• Fluoro-elastomer construction for sealing performance in transfer case service
• Clockwise-spiral lip design for controlled sealing contact
• Metric dimensions: 50.000 mm inside diameter, 70.200 mm outside diameter, and 8.000 mm width
• Matches confirmed front-position transfer case applications with Magna ATC300, ATC350, ATC35L, ATC400, ATC450, ATC500, ATC700, and ATC Transfer Case units
• National 710746 is part of the 710700 series

Detailed Description

This transfer case output shaft seal is engineered for vehicles that use a one-speed Magna transfer case and require a precise shaft seal at the output location. The fluoro-elastomer sealing material is selected for demanding drivetrain environments, while the spiral lip profile supports consistent sealing contact during operation. National 710746 is a direct-fit sealing component for confirmed BMW X5, BMW X3, BMW X6, BMW 3 Series xDrive, BMW 5 Series xDrive, BMW 7 Series xDrive, and Maserati Ghibli, Levante, and Quattroporte applications listed in the fitment data.

National has supplied sealing solutions for more than 75 years, and this part reflects that focus on drivetrain sealing accuracy. The 710746 part number should be matched to the transfer case code and vehicle fitment notes before installation, especially on BMW and Maserati models with multiple Magna transfer case variants.

What It Helps Address

• Transfer case fluid seepage at the output shaft
• Oil residue around the transfer case housing
• Seal wear from age, heat, and drivetrain movement
• Loss of sealing integrity at the shaft interface
• Leaks associated with worn or hardened sealing material

Installation Notes and Tips

Verify the transfer case model, shaft dimensions, and application notes before replacement. Clean the bore and shaft sealing surface thoroughly, and inspect for scoring or wear that could affect seal life. Confirm the seal orientation during installation so the lip design seats correctly in the housing.

Quality Assurance

National is recognized for sealing products and has more than 75 years of industry experience in this category. Part number 710746 is built to the listed dimensional specifications and application requirements for the confirmed fitments.