National 711033 Differential Pinion Seal - Rear Outer

National 711033 Differential Pinion Seal

National 711033 is a metric differential pinion seal built for rear outer applications that need a precise shaft and housing fit. It uses a fluoro-elastomer sealing material and a clockwise-spiral lip design to help maintain sealing performance in demanding driveline service.

Compatible with select Chevrolet Silverado 1500, GMC Sierra 1500, GMC Yukon, and Nissan TITAN rear outer applications, this seal is sized for specific AAM axle and MA248 axle configurations. National 711033 is a direct-fit oil seal solution for vehicles that require accurate dimensions and dependable differential sealing.

Key Features

• Part number: 711033
• Part description: oil seal / differential pinion seal
• Metric unit of dimension for accurate service matching
• Fluoro-elastomer material for sealing durability
• Clockwise-spiral lip design
• Inside diameter: 2.087 in. / 53.000 mm
• Outside diameter: 3.197 in. / 81.200 mm
• Flanged outside diameter: 3.452 in. / 87.000 mm
• Thickness: 0.610 in. / 15.500 mm
• Overall width with side lip: 0.748 in. / 19.000 mm
• Housing bore: 3.189 in. / 81.000 mm

Product Details

National has supplied sealing solutions for more than 75 years, and the 711033 reflects that focus on dimensional accuracy and modern driveline requirements. This differential pinion seal is designed for rear outer use and is listed for applications including 2014-2018 Chevrolet Silverado 1500, 2014-2018 GMC Sierra 1500, 2014-2018 GMC Yukon, 2015-2018 GMC Yukon XL, 2017-2018 Nissan TITAN, and 2016-2018 Nissan TITAN XD, along with additional Cadillac, Chevrolet, GMC, and Tahoe/Suburban/Yukon XL coverage shown in the fitment data.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Differential gear oil seepage at the pinion area
• Fluid loss around the rear outer seal location
• Contamination entering the differential through a worn seal
• Noise or driveline issues caused by low lubricant level
• Service needs on AAM axle and MA248 axle rear differential assemblies

Installation Notes and Tips

Verify the axle type, ring gear size, and seal dimensions before installation. This seal is listed for rear outer positions only, so match the vehicle configuration exactly to the fitment notes, especially on 9.5-inch and 9.76-inch AAM axle applications and Nissan TITAN / TITAN XD models with the American 248 mm ring gear and MA248 axle.

Inspect the pinion surface and housing bore for wear, scoring, or corrosion before installing the new seal. Proper seating depth and clean mating surfaces are important for a reliable seal on Chevrolet Tahoe, GMC Yukon, and related rear differential service jobs.

Quality Assurance

National designs sealing products with current vehicle service requirements in mind and backs the 711033 with the brand’s long-standing focus on premium sealing solutions. The fluoro-elastomer construction and engineered lip profile are selected to support consistent differential sealing performance in the specified applications.