Febi 31504 Transfer Case Input Shaft Seal - Left

Transfer Case Input Shaft Seal for Audi and Volkswagen

Febi 31504 is a transfer case input shaft seal built with ACM sealing material and sized for a 54.0 mm inside diameter, 68.0 mm outside diameter, and 8.0 mm thickness. It is used on select Audi TT Quattro, Audi A3 Quattro, Audi S3, and Volkswagen models with double-clutch transmissions and left-side applications.

Key Features

• Transfer case input shaft seal for drivetrain sealing service
• ACM sealing material for oil resistance in transmission and transfer case environments
• 54.0 mm inside diameter, 68.0 mm outside diameter, 8.0 mm thickness
• Direct-fit replacement for select Audi and Volkswagen applications
• Febi part number 31504

Detailed Description

Febi 31504 is a precision transfer case input shaft seal for vehicles that require a left-side sealing solution at the transfer case or transmission interface. The seal dimensions and ACM construction are matched to the listed applications, including Audi TT Quattro, Audi TTS Quattro, Audi A3 Quattro, Audi S3, and Volkswagen Golf R, Golf Alltrack, Golf SportWagen, Passat, and R32 models. This part cross-references OE numbers 09A 409 529 A and 09A 409 529 B for the same application. If you are servicing a 2000-2020 Audi TT Quattro or a 2006-2010 Volkswagen Passat with the specified transmission IDs, Febi 31504 provides the correct sealing profile for the job.

What This Seal Helps Address

• Transmission or transfer case fluid seepage at the input shaft area
• Oil residue around the left-side drivetrain sealing point
• Seal wear from age, heat, and fluid exposure
• Leak-related maintenance on double-clutch equipped applications
• Restoration of proper sealing during drivetrain service

Installation Notes and Tips

Verify the inside diameter, outside diameter, and thickness before installation. Confirm the transmission ID and vehicle application, especially on Audi TT Quattro, Audi A3 Quattro, and Volkswagen Passat models with listed double-clutch configurations. Inspect the shaft surface and housing bore for wear, scoring, or contamination before fitting the new seal. Clean the sealing area thoroughly and install the seal squarely to avoid distortion.

Quality Assurance

Febi is a recognized aftermarket brand for European vehicle service parts, and this seal is manufactured to match the listed dimensional and application requirements for a proper replacement fit.