National 710319 Manual Transmission Output Shaft Seal

Manual Transmission Output Shaft Seal for Toyota and Lexus

National 710319 is a metric manual transmission output shaft seal built with nitrile sealing material for dependable oil control at the transmission output shaft. With a 1.496 in. shaft diameter, 2.287 in. outside diameter, and 0.433 in. width, it is sized for specific Toyota, Lexus, Subaru, Scion, Jeep, and other applications that call for this seal profile.

National has supplied sealing solutions for more than 75 years, and this seal reflects that focus on precise dimensions and modern vehicle coverage. The 710319 part number is used across a wide range of manual transmission and transfer case applications, including Toyota RAV4, Toyota Highlander, Lexus RX350, and Toyota Sienna configurations.

Key Features

• Manual transmission output shaft seal / oil seal
• Nitrile sealing material for oil resistance
• Metric dimensions for accurate OE-style fitment
• 1.496 in. shaft diameter and 2.287 in. outside diameter
• 0.433 in. width for specified housings
• National 710319 for targeted transmission sealing service

Detailed Description

National 710319 is designed for transmission sealing applications where the output shaft must stay protected from fluid leakage and contamination. Its nitrile construction and metric sizing make it a practical replacement for vehicles using Aisin and Toyota transmission and transfer case assemblies. This part cross-references Beck/Arnley 052-3647 and Four Seasons 14958 for the same application.

Common fitment includes 2010-2019 Lexus RX350, 2010-2019 Lexus RX450h, 2014-2019 Toyota Highlander, 2011-2019 Toyota Sienna, 2004-2016 Toyota RAV4, 2009-2016 Toyota Venza, 2013-2019 Subaru BRZ, 2017-2019 Toyota 86, and 2013-2016 Scion FR-S. It also covers many earlier Toyota, Jeep, Mazda, Mitsubishi, Isuzu, Kia, and Mini manual transmission applications.

What It Helps Solve

• Transmission fluid seepage at the output shaft
• Oil leakage around the seal housing bore
• Contamination entering the transmission or transfer case area
• Wear-related sealing loss on high-mileage drivetrains
• Service replacement for damaged or hardened original seals

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation. This seal measures 38.000 mm inside diameter, 58.100 mm outside diameter, and 11.000 mm width, so matching the transmission or transfer case specification is essential. Clean the bore and shaft surface thoroughly, inspect for scoring or corrosion, and install the seal squarely to avoid distortion. Confirm the exact transmission code, such as Toyota U151F, U140F, E352F, or Aisin MF1A/MF2A configurations, before ordering.

Quality Assurance

National has built its sealing product line over more than 75 years, with engineering focused on current vehicle requirements and precise sealing performance. Part number 710319 is manufactured as a metric oil seal for the listed applications and dimensions.