FAG SS2678 Drive Axle Shaft Seal - Front, Front Left or Front Right

Drive Axle Shaft Seal for Front Wheel End Service

FAG SS2678 is a front drive axle shaft seal built for wheel-end sealing performance on a wide range of Chevrolet, GMC, and Hummer applications. It is engineered with a nitrile sealing material and a metal spring design with an auxiliary lip to help keep contaminants out and grease in.

Use this seal when servicing front axle and wheel-end components on vehicles such as the Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, and Hummer H2. FAG SS2678 is sized for the specified bore and outside diameter requirements and is built to match the application-specific demands of heavy-duty driveline service.

Key Features

• Part number: SS2678
• Drive axle shaft seal for front wheel-end applications
• Seal type: metal, spring, auxiliary lip
• Sealing material: nitrile
• Bore diameter: 2.402 in. / 61.011 mm
• Seal outside diameter: 2.407 in. / 61.138 mm
• Seal width: 1.614 in. / 40.996 mm
• Designed to help block dirt, dust, and moisture from wheel-end components
• Helps retain grease at the bearing over the service life of the seal

Detailed Description

FAG SS2678 is a front drive axle shaft seal for vehicles that require precise wheel-end sealing dimensions and durable sealing materials. The nitrile construction, spring-loaded sealing design, and auxiliary lip work together to support consistent sealing at the axle shaft and bearing area. This part is used in front positions on applications including Chevrolet Suburban 2500, Chevrolet Silverado 1500, GMC Sierra 1500, and Hummer H2, along with additional Silverado and Sierra HD models listed in the fitment data. This part cross-references Bosch 16123 for the same application.

What It Helps Address

• Grease loss at the wheel bearing or axle seal area
• Contamination from road dirt, dust, and moisture
• Seal wear in front axle service on heavy-duty trucks and SUVs
• Leak-related driveline maintenance on Chevrolet Silverado and GMC Sierra platforms
• Front wheel-end sealing issues on Hummer H2 applications

Installation Notes and Tips

Confirm the seal dimensions, position, and vehicle configuration before installation. This part is listed for front applications, including front left and front right on Hummer H2, and front on the other confirmed vehicles. Clean the bore and shaft sealing surfaces thoroughly, and inspect the hub, bearing, and axle components for wear before installing the new seal. Verify the application notes for brake package or ring gear requirements where listed.

Quality Assurance

FAG designs these wheel seals using high-quality materials and application-specific specifications to meet vehicle manufacturer requirements. The seal is built to the dimensional and material standards needed for front wheel-end service on the listed Chevrolet, GMC, and Hummer applications.

Compatible Vehicles

• Fits 2000-2012 Chevrolet Suburban 2500, front, w/ JH6 Brks.
• Fits 2000-2012 GMC Yukon XL 2500, front, w/ JH6 Brks.
• Fits 2001-2010 Chevrolet Silverado 2500 HD, front.
• Fits 2007-2010 Chevrolet Silverado 3500 HD, front.
• Fits 2001-2010 GMC Sierra 2500 HD, front.
• Fits 2009-2010 GMC Sierra 3500 HD, front.
• Fits 2007 GMC Sierra 3500 HD, front.
• Fits 2003-2009 Hummer H2, front right.
• Fits 2003-2009 Hummer H2, front left.
• Fits 2007 Chevrolet Silverado 2500 HD Classic, front.
• Fits 2007 Chevrolet Silverado 3500 Classic, front.
• Fits 2007 GMC Sierra 2500 HD Classic, front.
• Fits 2007 GMC Sierra 3500 Classic, front.
• Fits 2002-2006 Chevrolet Avalanche 2500, front.
• Fits 2002-2006 Chevrolet Silverado 1500, front, 9.25" ring gear.
• Fits 2005-2006 Chevrolet Silverado 1500 HD, front, 9.25" ring gear.
• Fits 2002-2003 Chevrolet Silverado 1500 HD, front, 9.25" ring gear.
• Fits 2001-2006 Chevrolet Silverado 3500, front.
• Fits 2006 GMC Sierra 1500, front, 9.25" ring gear.
• Fits 2005-2006 GMC Sierra 1500 HD, front, 9.25" ring gear.
• Fits 2002-2003 GMC Sierra 1500 HD, front, 9.25" ring gear.
• Fits 2001-2006 GMC Sierra 3500, front.
• Fits 1999-2004 Chevrolet Silverado 2500, front.
• Fits 1999-2004 GMC Sierra 2500, front.
• Fits 1997-2000 Chevrolet K2500, front, w/ 8,600 lb GVW.
• Fits 1997-2000 Chevrolet K3500, front.
• Fits 1997-2000 GMC K2500, front, 8600 lb. G.V.W.
• Fits 1997-2000 GMC K3500, front.
• Fits 1997-1999 Chevrolet K2500 Suburban, front, 8600 lb. G.V.W.
• Fits 1997-1999 GMC K2500 Suburban, front, 8600 lb. G.V.W.