SKF 13786 Automatic Transmission Output Shaft Seal - Left or Right

SKF Automatic Transmission Output Shaft Seal

SKF Part Number 13786 is an automatic transmission output shaft seal built for specific vehicle applications that need reliable fluid retention at the transmission output. With a polyacrylate sealing surface and precise dimensions, it is designed to help maintain proper sealing at the shaft interface in Ford, Chevrolet, Lincoln, and related 6T70 transmission applications.

Key Features

• Automatic transmission output shaft seal for the transmission sealing system
• Polyacrylate sealing surface type for controlled contact at the shaft
• Outside diameter: 2.808 in.
• Shaft diameter: 1.377 in.
• Width: 0.433 in.
• SKF Part Number 13786 for direct identification
• Cross-reference: Ford 7T4Z1177B for the same application

Detailed Description

SKF 13786 is engineered for output shaft sealing in automatic transmissions where fluid control and contamination resistance are critical. SKF has a long history in seal design and uses application-specific materials and manufacturing methods to match the operating environment. This seal is listed for a wide range of vehicles, including Ford Edge, Ford Explorer, Ford Flex, Ford Taurus, Lincoln MKX, Lincoln MKT, Lincoln MKZ, Chevrolet Impala, and Chevrolet Malibu, with coverage that includes right-side and selected left-side applications.

Compatible With 2007-2017 Ford Edge, right; 2011-2017 Ford Explorer, right; and 2008-2015 Chevrolet Malibu, right, this seal also appears in 6T70 transmission applications across multiple platforms. If you are servicing a Ford Taurus, Lincoln MKS, or Chevrolet Impala transmission output seal, SKF Part Number 13786 provides a direct replacement reference for the listed fitments.

What It Helps Address

• Transmission fluid leakage at the output shaft seal
• Contamination entering the transmission through a worn seal area
• Seal wear from age, heat, and fluid exposure
• Drips or seepage around the transmission output shaft
• Service replacement for damaged OE-style sealing surfaces

Installation Notes and Tips

Verify the transmission side and position before installation, since this part is listed for right-side and selected left-side applications. Confirm the shaft diameter, outside diameter, and width against the original seal before pressing the new seal into place. Inspect the shaft and sealing surface for scoring or wear, and clean the bore thoroughly so the seal seats evenly. For vehicles such as Ford Edge, Chevrolet Impala, and Lincoln MKZ, confirm the transmission variant and notes shown in the fitment data before ordering.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using premium materials and controlled bonding methods. The brand’s seal engineering heritage dates back to the first integrated shaft seal, and its products are built to meet high manufacturing standards for long service life and dependable sealing performance.