InMotion WS3543 Manual Transmission Output Shaft Seal

Manual Transmission Output Shaft Seal for GM Applications

InMotion WS3543 is a precision-engineered manual transmission output shaft seal built to help keep transmission fluid where it belongs while blocking dirt, moisture, and road debris. With fitment across a wide range of Chevrolet, Buick, Pontiac, Saab, Saturn, Suzuki, Volvo, Ford, and Mazda applications, it is a direct-fit sealing solution for many GM and related drivetrains.

Built with polyacrylate sealing material, a JIS G3521 seal case, and a JIS G3141 spring material, this seal is sized to match the specified housing and shaft dimensions for proper sealing performance. The external markings read 35.00 x 54.85 x 8.90/14.20, and the part number WS3543 is used across numerous OE-style replacement applications.

Key Features

• InMotion WS3543 manual transmission output shaft seal
• Polyacrylate sealing material for fluid control and contaminant resistance
• 35 mm inside diameter and 55.1 mm outside diameter
• Housing bore: 54.9 mm; shaft diameter: 35 mm
• External markings: 35.00 x 54.85 x 8.90/14.20
• Spring material: JIS G3141
• Seal case material: JIS G3521

Detailed Description

WS3543 is designed for applications that require a reliable manual transmission output shaft seal with accurate dimensions and durable sealing materials. The seal helps maintain a tight barrier at the output shaft area, reducing the chance of fluid leakage while limiting the entry of contaminants that can affect internal drivetrain components. This makes it a practical replacement for vehicles such as the Chevrolet Cruze, Chevrolet Sonic, Buick Regal, and Pontiac G6 when the listed transmission and position match.

Because fitment varies by transmission family and position, confirm the vehicle, transmission code, and side before ordering. This part number WS3543 appears in a broad range of applications, including models equipped with Getrag, Saab, GMC, Aisin, Isuzu, and Spicer drivetrains.

This part cross-references common OE-style replacement listings for the same application.

What It Helps Address

• Transmission fluid seepage at the output shaft area
• Contamination from dirt, moisture, and road debris
• Wear-related sealing loss on aging drivetrains
• Service issues tied to a damaged or hardened seal lip
• Leak concerns after transmission maintenance or axle service

Installation Notes and Tips

• Verify the exact year, make, model, transmission, and position before installation.
• Inspect the shaft surface and housing bore for scoring, corrosion, or wear.
• Clean the sealing area thoroughly so the new seal seats evenly.
• Use the listed dimensions and external markings to confirm match-up.
• Replace the seal if the original unit shows hardening, cracking, or fluid leakage.

Quality Assurance

InMotion manufactures this seal with specified material and dimensional standards to support consistent fitment across the listed applications. The WS3543 is built for direct replacement use in compatible driveline service work.