FAG SS2920 Automatic Transmission Seal - Rear

Automatic Transmission Seal for Ford Applications

FAG SS2920 is an automatic transmission seal built with a metal case, spring, and auxiliary lip to help maintain a secure seal at the transmission shaft. It uses polyacrylate sealing material and precise dimensions for applications that require an 80.62 mm bore diameter, 80.747 mm outside diameter, and 31.217 mm width.

Compatible With Ford F-150, Ford F-250 Super Duty, Ford F-350 Super Duty, Ford Expedition, Ford Excursion, and related rear-position applications listed below. This part number, SS2920, is also referenced by cross numbers such as Gates 18725 and National 100086 for the same application.

Key Features

• FAG automatic transmission seal for transmission sealing applications
• Metal, spring, and auxiliary lip design for controlled sealing contact
• Polyacrylate sealing material for transmission service conditions
• Dimensions: 80.62 mm bore diameter, 80.747 mm outside diameter, 31.217 mm width
• Direct fitment coverage for multiple Ford rear applications
• Part number SS2920 for catalog and service identification

Detailed Product Description

FAG SS2920 is engineered for transmission sealing where dimensional accuracy and material selection matter. The seal design combines a metal shell, spring tension, and auxiliary lip to help maintain sealing performance at the shaft interface. Its polyacrylate sealing material is selected for transmission environments, and the listed dimensions support proper fit in the specified Ford rear applications. For buyers searching for a Ford F-150 rear transmission seal, Ford Expedition rear seal, or Ford F-250 Super Duty rear transmission seal, SS2920 provides a cataloged replacement option with defined OE-style dimensions.

What This Seal Helps Address

• Transmission fluid leakage at the shaft seal area
• Contamination from dirt, dust, and moisture entering the sealed area
• Loss of grease or fluid retention at the bearing or seal interface
• Wear-related sealing issues in rear-position Ford applications
• Replacement needs for service parts identified as SS2920

Installation Notes and Tips

Verify shaft diameter, bore diameter, and seal width before installation. Confirm the vehicle application and position against the fitment list, especially on rear-position Ford trucks and SUVs. Inspect the shaft surface for scoring or wear, and clean the housing thoroughly before pressing the seal into place. Use proper installation tools to avoid distorting the seal lip or case.

• Fits 1999 Ford F-250, Rear
• Fits 1999-2004 Ford F-250 Super Duty, Rear, 1.880" shaft
• Fits 1999-2004 Ford F-350 Super Duty, Rear, 1.880" shaft
• Fits 2000-2003 Ford F-150, Rear, 1.88" shaft
• Fits 2000-2002 Ford Expedition, Rear
• Fits 2000-2002 Ford Excursion, Rear
• Fits 2001-2002 Ford Explorer Sport, Rear, 4R100 transmission
• Fits 2003-2005 Ford F-150, N/A
• Fits 2003-2005 Ford Expedition, N/A
• Fits 2003-2005 Ford Excursion, N/A
• Fits 2004-2005 Ford F-150 Heritage, N/A
• Fits 1998-2004 Lincoln Navigator, N/A

Quality Assurance

FAG states that its seals are built from high-quality materials and developed to meet vehicle manufacturer specifications. SS2920 is manufactured to support demanding sealing requirements across the listed Ford and Lincoln applications.