SKF 19939 Automatic Transmission Oil Pump Seal - Front

SKF Automatic Transmission Oil Pump Seal 19939

SKF 19939 is an automatic transmission oil pump seal built with a nitrile sealing surface and precise dimensions for front pump sealing service. It is designed for applications that need reliable fluid retention and contamination control in the transmission assembly.

• Nitrile sealing surface for transmission fluid sealing
• Width: 0.368 in.
• Outside diameter: 2.884 in.
• Shaft diameter: 2.000 in.
• Front-position transmission oil pump seal
• SKF part number 19939 for direct identification

Application Details

Compatible with a wide range of GM trucks, vans, and SUVs, including Chevrolet Express 2500, Chevrolet Silverado 2500 HD, GMC Savana 3500, and Chevrolet Tahoe front applications. This part cross-references 24209839 and 145819939 for the same application. The SKF 19939 is also used across Chevrolet C/K, GMC C/K, Suburban, Yukon, Sierra, and related front transmission pump seal applications from 1991 through 2009.

What This Seal Helps Address

• Transmission fluid seepage at the front pump area
• Contamination entering the transmission through a worn seal
• Leak-related low fluid condition during service diagnosis
• Seal wear from age, heat, and fluid exposure
• Front pump sealing issues during transmission rebuild or repair

Installation Notes and Tips

Verify shaft diameter, outside diameter, and seal width before installation. Clean the sealing bore and shaft surface thoroughly, and inspect the pump and mating surfaces for wear or scoring. Proper alignment during installation helps prevent damage to the nitrile sealing lip and supports a correct seal on front pump applications.

Quality Assurance

SKF has a long history in seal engineering and manufactures seals to specific designs using premium materials for the intended application and operating environment. The brand’s sealing products are built to high quality standards for durability, fluid control, and safe operation.