SKF 20706A Automatic Transmission Adapter Housing Seal - Rear

SKF 20706A Transmission Seal Overview

SKF 20706A is an automatic transmission adapter housing seal built for the 6L80 transmission applications listed below. It is engineered with a polyacrylate sealing surface and precise dimensions to help maintain a tight seal where the transmission housing meets the mating component.

For Chevrolet, GMC, and Cadillac vehicles with the 6L80 transmission, this seal supports clean, reliable sealing performance in rear-drive applications and other listed configurations. The SKF 20706A part number is a direct reference for buyers searching for an OE-style transmission seal replacement.

Key Features

• Automatic transmission adapter housing seal for 6L80 applications
• Polyacrylate sealing surface type for durable sealing performance
• Outside diameter: 3.007 in.
• Shaft diameter: 2.063 in.
• Width: 0.394 in.
• SKF 20706A part number for accurate ordering and cross-reference lookup

Detailed Product Description

SKF has a long history in seal engineering, and this adapter housing seal reflects that focus on material selection and dimensional accuracy. The seal is designed to help retain transmission fluid at the housing interface while keeping outside contaminants away from critical internal components. Its measured dimensions and polyacrylate sealing surface make it a precise service part for the listed 6L80 transmission vehicles, including Chevrolet Corvette, Silverado 1500, Tahoe, and GMC Sierra 1500 applications.

This part cross-references National 200865 for the same application. If you are replacing a worn or leaking transmission adapter housing seal, SKF 20706A provides a direct-fit service option for the specified Chevrolet, GMC, and Cadillac models.

Common Problems This Seal Can Address

• Transmission fluid seepage at the adapter housing seal area
• Contamination entering the transmission housing interface
• Seal wear from age, heat, and fluid exposure
• Leak-related maintenance on 6L80-equipped Chevrolet and GMC trucks and SUVs
• Service replacement during transmission repair or rebuild work

Installation Notes and Tips

Confirm the transmission is a 6L80 application before ordering. Match the seal dimensions and sealing surface type to the original part, and inspect the housing and shaft surfaces for wear, scoring, or debris before installation. Clean all mating surfaces thoroughly so the new seal seats evenly and maintains proper contact.

Use the SKF 20706A part number during verification to avoid ordering errors, especially when servicing Chevrolet Caprice, Corvette, Silverado 1500, Tahoe, or GMC Yukon applications.

Quality Assurance

SKF designs and manufactures seals to specific application requirements using premium materials and controlled production standards. The brand’s seal engineering background supports consistent fit and long service life in demanding transmission environments.