FAG SS3084 Automatic Transmission Seal - Rear

Automatic Transmission Seal for Ford Super Duty

FAG SS3084 is an automatic transmission seal built with a metal case, spring, and auxiliary lip to help maintain a secure seal at the transmission interface. It uses polyacrylate sealing material and precise dimensions for applications that require controlled sealing performance in demanding driveline environments.

Compatible With 2004-2012 Ford E-350 Super Duty, 2010 Ford F-250 Super Duty, 2010 Ford F-350 Super Duty, and rear applications on 2006-2009 Ford F-250 Super Duty and 2006-2009 Ford F-350 Super Duty. FAG SS3084 is also a direct reference for service matching where OE-style dimensions are required.

Key Features

• Part number: SS3084
• Seal type: metal, spring, and auxiliary lip
• Sealing material: polyacrylate
• Bore diameter: 3.176 in. / 80.67 mm
• Seal outside diameter: 3.181 in. / 80.797 mm
• Seal width: 2.087 in. / 53.01 mm
• Built for transmission sealing applications in Ford Super Duty and E-350 platforms

Detailed Description

FAG SS3084 is engineered for transmission sealing where dimensional accuracy and material selection matter. The metal-and-spring construction supports consistent sealing pressure, while the auxiliary lip adds an additional barrier at the sealing surface. Polyacrylate is used for the sealing element to support performance in transmission environments where heat and fluid exposure are part of normal operation. This part number is commonly searched as FAG SS3084 for Ford E-350 Super Duty and Ford F-250 Super Duty / F-350 Super Duty service work.

This part cross-references Gates 20847 and Timken 710537 for the same application.

What It Helps Address

• Transmission fluid seepage at the seal interface
• Contamination entry from dirt, dust, and moisture
• Loss of sealing integrity caused by worn or hardened seal material
• Noise or drivability concerns related to fluid loss in the sealed area
• Service replacement needs on Ford Super Duty rear applications

Installation Notes and Tips

• Verify bore diameter, outside diameter, and width before installation.
• Inspect the shaft and housing surfaces for wear, scoring, or corrosion.
• Clean the sealing area thoroughly so the lip seats evenly.
• Use the vehicle application and position data to confirm the correct rear or transmission location.
• For 2006-2009 Ford F-250 Super Duty and F-350 Super Duty rear service, confirm the Schaeffler seal reference 413 3084 100 when matching parts.

Quality Assurance

FAG designs seals using high-quality materials and application-specific specifications to meet vehicle manufacturer requirements. The SS3084 follows those dimensional and material standards for consistent fitment in supported Ford applications.