National 710474 Differential Pinion Seal - Rear Outer

National 710474 Differential Pinion Seal

The National 710474 differential pinion seal is an oil seal built for rear outer applications that need a precise shaft-to-housing seal. It is sized for a 1.732 in. shaft diameter and 2.657 in. outside diameter, making it a direct-fit sealing component for select Chevrolet, GMC, Buick, Isuzu, Oldsmobile, and Pontiac driveline applications.

Key Features

• Part number: National 710474
• Part description: oil seal for differential pinion sealing applications
• Inside diameter: 1.732 in. / 44.000 mm
• Outside diameter: 2.657 in. / 67.500 mm
• Housing bore: 2.653 in. / 67.390 mm
• Width: 0.375 in. / 9.530 mm
• Material: polyacrylate
• Series: 710400
• Type: 85

Detailed Description

National has supplied sealing solutions for more than 75 years, and the 710474 reflects that focus on dimensional accuracy and modern vehicle coverage. This differential pinion seal is engineered around the listed shaft, bore, and width measurements to help maintain a proper seal at the rear outer position on supported driveline assemblies. It is a strong match for owners searching for a rear outer differential pinion seal for 2004-2013 Chevrolet Colorado, 2004-2012 GMC Canyon, and other listed GM and Isuzu platforms with the specified axle and ring gear configurations. This part cross-references Bosch 17407 for the same application.

What This Seal Helps Address

• Gear oil seepage at the differential pinion area
• Contamination entering the pinion seal interface
• Seal wear from age, heat, and driveline use
• Leaks affecting rear axle lubrication levels
• Noise or driveline concerns associated with low lubricant condition

Installation Notes and Fitment

Fits 2004-2013 Chevrolet Colorado, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2004-2012 GMC Canyon, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002-2009 Chevrolet Trailblazer, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002-2009 GMC Envoy, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2003-2008 Isuzu Ascender, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2007-2008 Isuzu i-290, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2007-2008 Isuzu i-370, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2004-2007 Buick Rainier, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002-2006 Chevrolet Trailblazer EXT, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002-2006 GMC Envoy XL, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2006 Isuzu i-280, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2006 Isuzu i-350, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002-2005 Chevrolet Astro, rear outer; 7.625 inch ring gear and AAM axle. Fits 2002-2005 Chevrolet Blazer, rear outer; 7.625 inch ring gear and AAM axle. Fits 2004-2005 GMC Envoy XUV, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002-2005 GMC Jimmy, rear outer; 7.625 inch ring gear and AAM axle. Fits 2002-2005 GMC Safari, rear outer; 7.625 inch ring gear and AAM axle. Fits 2002-2004 Chevrolet S10, rear outer; 7.625 inch ring gear and AAM axle. Fits 2002-2004 GMC Sonoma, rear outer; 7.625 inch ring gear and AAM axle. Fits 2002-2004 Oldsmobile Bravada, rear outer; manual transmission input shaft bearing, with 8 inch ring gear and AAM axle. Fits 2002 Chevrolet Camaro, rear outer; 7.625 inch ring gear and AAM axle. Fits 2002 Pontiac Firebird, rear outer; 7.625 inch ring gear and AAM axle. Fits 2001 Chevrolet Astro, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 Chevrolet Blazer, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 Chevrolet Camaro, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 Chevrolet S10, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 GMC Jimmy, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 GMC Safari, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 GMC Sonoma, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 Oldsmobile Bravada, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter. Fits 2001 Pontiac Firebird, rear outer; 2nd design, with 7.625 in. ring gear, 0.375 in. width, AAM axle, 2.657 in. outside diameter.

Quality Assurance

National is recognized for sealing products backed by decades of engineering experience and ongoing development for current vehicle platforms. The 710474 uses polyacrylate construction and published dimensional specifications to support accurate replacement selection for the listed applications.