FAG SS2852 Differential Pinion Seal - Rear or Rear Rearward

FAG SS2852 Differential Pinion Seal

The FAG SS2852 differential pinion seal is built for rear axle service where keeping gear oil contained and contaminants out is critical. It is a direct-fit sealing solution for a wide range of Ford and Lincoln rear differential applications, including F-150, F-250 Super Duty, Expedition, Navigator, and Transit models.

With a nitrile sealing material, metal case, spring, and auxiliary lip design, this seal is engineered to maintain a tight seal at the pinion area and support long-term drivetrain protection. FAG SS2852 is a practical replacement for worn or leaking rear differential pinion seals.

Key Features

• Part number: SS2852
• Differential pinion seal for rear axle service
• Seal type: metal, spring, auxiliary lip
• Sealing material: nitrile
• Bore diameter: 3.092 in. / 78.537 mm
• Seal outside diameter: 3.096 in. / 78.638 mm
• Seal width: 1.813 in. / 46.05 mm
• Designed for rear and rearward axle positions listed in fitment

Detailed Description

FAG SS2852 is a rear differential pinion seal designed to help maintain proper lubrication at the pinion shaft while limiting dirt, dust, and moisture intrusion. The nitrile sealing element is paired with a metal shell, spring tension, and auxiliary lip to support consistent sealing performance in demanding driveline environments. This makes it a strong match for vehicles that rely on a stable rear axle seal to protect differential components.

Compatible applications include many Ford F-150 rear axle setups, Ford F-250 Super Duty and F-350 Super Duty rear applications, Ford Expedition rear and rearward positions, Lincoln Navigator rear axles, and Ford Transit rear axle listings. This part cross-references AMS Automotive 4278 and Baldwin 18024 for the same application.

What It Helps Fix

• Rear differential pinion seal leaks
• Gear oil loss at the pinion area
• Contamination from road dirt, dust, and moisture
• Seal wear from age, heat, and drivetrain use
• Noise or driveline concerns related to low differential fluid

Installation Notes and Tips

Verify axle ratio, ring gear size, and rear axle configuration before ordering, since fitment varies by application. Confirm the seal dimensions against the original part and inspect the pinion yoke and sealing surface for wear or grooves before installation. Proper cleaning of the housing and sealing surfaces helps the new seal seat correctly.

Fits 2007-2019 Ford Expedition, Rear; 2015-2019 Ford Transit-150, Rear; 2015-2019 Ford Transit-350, Rear; 2015-2019 Ford Transit-350 HD, Rear; 2000-2019 Lincoln Navigator, Rear; 2015-2018 Ford Mustang, Rear; 2012-2016 Ford Expedition, Rear Rearward; 2015-2016 Ford Mustang, Rear; 2016 Ford Transit-150, Rear Rearward; 2015-2016 Ford Transit-250, Rear; 2016 Ford Transit-250, Rear Rearward; 2016 Ford Transit-350, Rear Rearward; 2016 Ford Transit-350 HD, Rear Rearward; 2012-2014 Ford F-150, Rear; 1999-2009 Ford F-150, Rear; 2011 Ford F-150, Rear; 2010 Ford F-150, Rear; 1999-2010 Ford F-250 Super Duty, Rear; 2010 Ford F-350 Super Duty, Rear; 1999-2010 Ford F-350 Super Duty, Rear; 2008-2010 Ford F-350 Super Duty, Rear; 2006-2010 Ford Ranger, Rear; 1999 Ford Ranger, Rear; 2000-2009 Ford F-250, Rear; 1999-2009 Ford F-250, Rear; 2001-2009 Ford F-250 Super Duty, Rear; 2000-2009 Ford F-250 Super Duty, Rear; 2008-2009 Ford F-350 Super Duty, Rear; 2004-2008 Ford F-150, Rear; 2007-2008 Ford F-150, Rear; 2004-2005 Ford F-150, Rear; 2006-2008 Lincoln Mark LT, Rear; 1997-2006 Ford Expedition, Rear; 2006 Ford F-150, Rear; 2003-2005 Ford E-150, Rear; 2003-2005 Ford E-150 Club Wagon, Rear; 2000-2005 Ford Excursion, Rear; 2000-2005 Ford Explorer, Rear; 2001-2005 Ford Explorer Sport Trac, Rear; 2000-2005 Ford Ranger, Rear; 2000-2003 Ford F-150, Rear; 1999-2002 Ford E-150 Econoline, Rear; 1999-2002 Ford E-150 Econoline Club Wagon, Rear; 2002 Lincoln Blackwood, Rear; 2000 Ford F-250 Super Duty, Rear; 1999 Ford Explorer, Rear; 1999 Ford F-250, Rear; 1985-1999 Ford F-250, Rear; 1999 Ford F-250 Super Duty, Rear; 1999 Ford F-350, Rear; 1985-1997 Ford F-350, Rear; 1999 Ford F-350 Super Duty, Rear; 1985-1998 Ford E-250 Econoline, Rear; 1985-1991 Ford E-250 Econoline Club Wagon, Rear.

Quality Assurance

FAG specifies this seal using high-quality materials and application-specific engineering to meet vehicle manufacturer requirements. The design focus is on sealing performance, contamination control, and grease or fluid retention over the service life of the bearing and driveline components.