FAG HC6181 Automatic Transmission Output Shaft Seal - Right

FAG HC6181 Output Shaft Seal Overview

FAG HC6181 is an automatic transmission output shaft seal built for specific right-side applications across a wide range of GM, Ford, Lincoln, Buick, Cadillac, and related vehicles. It uses a metal and spring seal design with polyacrylate sealing material to help maintain sealing performance at the transmission output shaft.

For shoppers searching for a transmission output shaft seal for a 2013-2019 Cadillac XTS right side, a 2017-2019 GMC Acadia right side, or a 2007-2018 Lincoln MKX right side, HC6181 provides a direct-fit service part reference.

Key Features

• Part number: FAG HC6181
• Automatic transmission output shaft seal for right-side applications
• Metal and spring seal type for stable sealing contact
• Polyacrylate sealing material
• Bore diameter: 2.795 in. / 70.993 mm
• Seal outside diameter: 2.808 in. / 71.323 mm
• Seal width: 1.377 in. / 34.976 mm
• Cross-reference part numbers include 4136181100 and OSC 13786

Detailed Description

FAG HC6181 is engineered to meet vehicle-specific sealing requirements for the transmission output shaft. The seal dimensions, material selection, and spring-loaded metal construction are designed for precise fitment where the output shaft passes through the transmission housing. This helps maintain the sealing interface under normal operating conditions while supporting long-term protection at the shaft opening.

Compatible vehicle coverage includes applications such as 2012-2019 Chevrolet Impala right, 2017-2019 Buick Envision right, 2010-2016 Cadillac SRX right, 2009-2017 Chevrolet Traverse right, and 2007-2017 Ford Edge right. The HC6181 part number is also used in searches for Lincoln MKZ, GMC Terrain, and Buick Enclave right-side transmission seal service.

This part cross-references 4136181100 and OSC 13786 for the same application.

What It Helps Address

• Transmission fluid leakage at the output shaft seal area
• Contamination entering the transmission through a worn seal opening
• Seal wear from age, heat, and normal drivetrain operation
• Loss of sealing tension at the shaft interface
• Service replacement for right-side output shaft seal applications

Installation Notes and Tips

Verify the vehicle year, make, model, and position before ordering. This seal is listed for right-side and front-right applications only, so match the original seal location exactly. Inspect the shaft surface and housing bore for wear, scoring, or contamination before installation, and confirm the bore and outside diameter match the service specification for the application.

For fitment-based searches, HC6181 is commonly referenced for 2007-2018 Lincoln MKX right, 2008-2017 Buick Enclave right, and 2017-2018 Ford Fusion front right applications. Always compare the original part number and seal dimensions during service.

Quality Assurance

FAG designs seals using high-quality materials and application-specific specifications to meet vehicle manufacturer requirements. The sealing design is intended to protect drivetrain components from dirt, dust, and moisture while helping retain lubricant at the bearing or shaft interface over the service life of the part.