National 710548 Drive Axle Shaft Seal - Front

Drive Axle Shaft Seal for Front Axles

National 710548 is a metric drive axle shaft seal built for front axle applications that require a 40.000 mm shaft diameter and a 69.200 mm outside diameter. It uses nitrile sealing material and is specified for vehicles with a 7.6 in ring gear and AAM axle carrier unit independent front axle setups.

Compatible with select Chevrolet Colorado, GMC Canyon, Hummer H3, Hummer H3T, and Isuzu i-370 front axle applications, this seal is engineered to help maintain proper lubrication at the axle shaft interface. National 710548 is also referenced by Quality-Built 15691 for the same application.

Key Features

• Drive axle shaft seal / oil seal for front axle service
• Nitrile sealing material for durable sealing performance
• Metric dimensions: 40.000 mm shaft, 69.200 mm outside diameter, 15.400 mm width
• Housing bore: 69.000 mm
• Series 710500, Type 32
• National 710548 part number for direct identification

Detailed Description

National 710548 is a front drive axle shaft seal designed around precise metric dimensions to match the axle housing and shaft interface. The seal’s nitrile construction and 15.400 mm width support a controlled sealing surface for driveline service where oil retention and contamination control are critical. This part is listed for 2004-2013 Chevrolet Colorado, 2004-2012 GMC Canyon, 2006-2010 Hummer H3, 2009-2010 Hummer H3T, 2007-2008 Isuzu i-370, and 2006 Isuzu i-350 front applications with a 7.6 in ring gear and AAM axle carrier unit independent configuration.

National has supplied sealing solutions for more than 75 years, and this part reflects that focus on dimensional accuracy and application-specific fitment. If you are servicing a front axle leak on a Chevrolet Colorado or GMC Canyon, National 710548 provides the correct sealing profile for the listed driveline setup.

What It Helps Address

• Front axle oil seepage at the shaft seal area
• Contamination entering the axle housing
• Loss of lubricant from the axle assembly
• Seal wear from age, heat, and driveline use
• Service replacement for the listed Chevrolet Colorado, GMC Canyon, and related front axle applications

Installation Notes and Tips

Verify shaft diameter, housing bore, and axle configuration before installation. This seal is specified for 40.000 mm shafts and 69.000 mm housing bores, so the axle housing and sealing surface should be inspected for wear, scoring, or corrosion before assembly. Clean the bore and shaft thoroughly, and confirm the vehicle uses the listed front axle configuration with a 7.6 in ring gear and AAM axle carrier unit independent setup.

For fitment confirmation, match the vehicle year, make, model, and front axle notes exactly to the application data for National 710548.

Quality Assurance

National is a long-established sealing brand with a focus on premium sealing solutions and application-specific engineering. National 710548 is built to the published metric dimensions and cross-references Quality-Built 15691 for the same application.