FAG SS2780 Differential Pinion Seal - Front

FAG SS2780 Differential Pinion Seal

The FAG SS2780 differential pinion seal is built for front axle applications that need reliable sealing at the pinion area. It helps keep gear oil contained while blocking dirt, dust, and moisture from entering the driveline.

• Metal, spring, and auxiliary lip seal design
• Polyacrylate sealing material for demanding driveline service
• Bore diameter: 2.921 in. / 74.193 mm
• Seal outside diameter: 2.922 in. / 74.219 mm
• Seal width: 1.72 in. / 43.688 mm
• Direct-fit replacement for select Dodge Durango, Dodge Dakota, Chrysler Aspen, and Mitsubishi Raider front applications

Fitment Coverage

• Fits 2011 Dodge Durango, front
• Fits 2000-2009 Dodge Durango, front
• Fits 2011 Ram Dakota, front
• Fits 2000-2010 Dodge Dakota, front
• Fits 2007-2009 Chrysler Aspen, front
• Fits 2006-2009 Mitsubishi Raider, front

FAG SS2780 is engineered to match vehicle-specific sealing requirements for the differential pinion location. Its metal-and-spring construction with an auxiliary lip supports consistent sealing performance, while the polyacrylate sealing material is selected for driveline environments where oil retention and contamination control matter. This part cross-references National 710476 for the same application.

What It Helps Address

• Gear oil seepage at the differential pinion seal area
• Contamination from road dirt, dust, and moisture
• Seal wear that can lead to driveline fluid loss
• Noise or driveline concerns related to low lubricant level
• Service replacement on front differential applications for Dodge Durango, Dodge Dakota, Chrysler Aspen, and Mitsubishi Raider

Installation Notes and Tips

Confirm bore diameter, seal outside diameter, and seal width before installation. Inspect the pinion surface and surrounding housing for wear, scoring, or contamination, and clean the sealing area thoroughly before pressing the new seal into place. Verify the application by year, make, model, and front position for the vehicle being serviced.

Quality Assurance

FAG seals are produced to meet vehicle manufacturer specifications and are designed with application-specific sealing requirements in mind. The SS2780 follows those standards for front differential pinion service on listed Dodge, Ram, Chrysler, and Mitsubishi vehicles.