FAG SS3319 Wheel Seal - Rear

Wheel Seal for Ford Rear Axles

FAG SS3319 is a rear wheel seal built for demanding axle applications where contamination control and grease retention matter. It is engineered to meet vehicle manufacturer specifications and is a direct-fit option for select Ford Transit, F-250, F-350, and Excursion rear wheel end applications.

Key Features

• Metal, spring, and auxiliary lip seal design for wheel-end protection
• Polyacrylate sealing material for durable sealing performance
• Seal outside diameter: 98.73 mm (3.887 in)
• Bore diameter: 98.603 mm (3.882 in)
• Seal width: 19.66 mm (2.941 in)
• Built to help keep dirt, dust, and moisture out of the wheel end
• Helps retain grease over the service life of the bearing

Detailed Description

FAG SS3319 wheel seal is designed for rear axle service on Ford trucks and vans that require precise sealing at the wheel end. The seal construction combines a metal case, spring tension, and auxiliary lip to support consistent contact at the sealing surface, while the polyacrylate material is selected for demanding driveline conditions. This part cross-references National 370247A and SKF 29425 for the same application. Common search terms for this part include rear wheel seal for Ford Transit-350 HD, Ford F-250 Super Duty rear seal, and Ford F-350 Super Duty rear axle seal. The FAG SS3319 part number is also used by buyers searching for OE-style replacement wheel seals for Ford rear axle service.

Vehicle Fitment

• Fits 2017-2020 Ford Transit-350 HD, rear
• Fits 2016-2019 Ford Transit-150, rear
• Fits 2016-2019 Ford Transit-250, rear
• Fits 2016-2019 Ford Transit-350, rear
• Fits 1999-2018 Ford F-250 Super Duty, rear
• Fits 2005-2018 Ford F-350 Super Duty, rear, Single Rear Wheels
• Fits 2015-2017 Ford Transit-350 HD, rear, Dual Rear Wheels
• Fits 2015-2017 Ford Transit-350 HD, rear, Single Rear Wheels
• Fits 2016 Ford F-350 Super Duty, rear, 10.50" Ring Gear
• Fits 1999-2004 Ford F-350 Super Duty, rear, 10.50" Ring Gear
• Fits 2016 Ford F-350 Super Duty, rear
• Fits 2015-2016 Ford Transit-350 HD, rear, Single Rear Wheels
• Fits 2015-2016 Ford Transit-350 HD, rear, Dual Rear Wheels
• Fits 2015 Ford Transit-150, rear, Dual Rear Wheels
• Fits 2015 Ford Transit-150, rear, Single Rear Wheels
• Fits 2015 Ford Transit-250, rear, Single Rear Wheels
• Fits 2015 Ford Transit-250, rear, Dual Rear Wheels
• Fits 2015 Ford Transit-350, rear, Single Rear Wheels
• Fits 2015 Ford Transit-350, rear, Dual Rear Wheels
• Fits 2011-2014 Ford F-350, rear, Single Rear Wheels
• Fits 2005-2009 Ford F-350, rear, Single Rear Wheels
• Fits 1999-2009 Ford F-250, rear
• Fits 2005-2008 Ford F-350 Super Duty, rear, Dual Rear Wheels, SOHC 24 Valve
• Fits 2005-2008 Ford F-350 Super Duty, rear, Dual Rear Wheels
• Fits 2005-2008 Ford F-350 Super Duty, rear, Dual Rear Wheels, SOHC
• Fits 2000-2005 Ford Excursion, rear
• Fits 2001-2004 Ford F-350, rear, 10.50" Ring Gear

Installation Notes and Tips

Verify axle and wheel-end dimensions before installation, including bore diameter, seal outside diameter, and seal width. Clean the hub and sealing surface thoroughly, and inspect the bearing, spindle, and hub for wear or scoring before installing the new seal. Confirm the vehicle configuration, including rear wheel setup and ring gear specification where listed, to ensure the correct application.

Quality Assurance

FAG designs wheel seals to meet vehicle manufacturer specifications and works with suppliers to maintain FAG quality standards. The seal is engineered to protect wheel-end components from contamination and help preserve grease retention during service.