National 3543 Manual Transmission Output Shaft Seal - Front Left, Left, Rear or Right

Manual Transmission Output Shaft Seal for Select GM, Saab, and More

National 3543 is a manual transmission output shaft seal built for specific applications that need a precise seal at the output shaft. It uses a silicone sealing material and a bi-directional lip design to help maintain sealing performance across rotating movement. This National 3543 oil seal also features Redi-Coat treatment for easier installation and consistent sealing contact.

Key Features

• Manual transmission output shaft seal / oil seal
• Silicone sealing material for durable sealing performance
• Bi-directional lip design
• Redi-Coat treated
• Series 3000, Type 57
• Inside diameter: 1.378 in. / 35.000 mm
• Outside diameter: 2.167 in. / 55.042 mm
• Width: 0.425 in. / 10.795 mm
• Flanged outside diameter: 2.441 in. / 62.000 mm
• Housing bore: 2.162 in. / 54.915 mm

Detailed Description

National has supplied sealing solutions for more than 75 years, and part number 3543 reflects that focus on fit and function. This seal is specified for a wide range of manual transmission and drivetrain applications, including Chevrolet Cruze, Chevrolet Sonic, Buick Regal, Saab 9-3, and Pontiac G6 models in the listed configurations. With its silicone material and bi-directional lip profile, it is built to help control fluid at the output shaft where consistent sealing is critical.

This part cross-references ATP XO-3 and Beck/Arnley 052-3557 for the same application.

What This Seal Helps Address

• Transmission fluid seepage at the output shaft
• Oil leakage around the manual transmission case
• Seal wear from shaft rotation and heat exposure
• Drivetrain contamination caused by fluid loss
• Service replacement for worn or hardened output shaft seals

Installation Notes and Fitment Tips

Verify transmission type, position, and shaft dimensions before installation. Fits 2011-2018 Chevrolet Cruze with Getrag F40-6 Transmission, 2012-2019 Chevrolet Sonic, 2011-2016 Buick Regal with Getrag F40-6 Transmission, 2013-2016 Buick Verano, and 2006-2007 Pontiac G6 with Getrag F40-6 Transmission. Also fits 2003-2011 Saab 9-3 with Saab F40 Transmission and 2005-2009 Chevrolet Cobalt with Saab F35 Transmission.

Additional fitments include 2004-2011 Chevrolet Aveo with Getrag F16-5 Transmission, 2006-2011 Chevrolet HHR with Getrag 287 Transmission, and 2006-2011 Chevrolet HHR with Saab F35 Transmission. Confirm the housing bore, shaft diameter, and transmission code against the vehicle before service.

Quality Assurance

National is known for premium sealing solutions and ongoing design support for modern vehicle applications. Part number 3543 is engineered to meet the dimensional and material requirements listed above for accurate replacement service.