BCHD PT9449 Automatic Transmission Extension Housing Seal - Rear

Automatic Transmission Extension Housing Seal

Part number PT9449 is an automatic transmission extension housing seal for a wide range of domestic and luxury applications. It is used where the transmission extension housing needs a sealing surface to help control fluid leakage at the rear of the transmission assembly.

Key Features

• Automatic transmission extension housing seal for service and repair work
• Application coverage includes Chevrolet, GMC, Bentley, Rolls-Royce, Jaguar, Jeep, Pontiac, Cadillac, Buick, Oldsmobile, Aston Martin, Hummer, and AM General models
• Fits rear-position applications where listed in the fitment data
• Supports long-tail fitment searches such as Chevrolet Silverado 2500 HD automatic transmission extension housing seal and GMC Sierra 1500 transmission seal
• Part number PT9449 for catalog matching and ordering

Detailed Description

PT9449 is a transmission sealing component for vehicles that use an automatic transmission extension housing seal at the rear of the transmission. The fitment data covers many Chevrolet and GMC trucks and SUVs, including Silverado, Sierra, Suburban, Tahoe, Yukon, and Express models, along with selected Bentley, Rolls-Royce, Jaguar, Jeep, Pontiac, Cadillac, Buick, Oldsmobile, Aston Martin, Hummer, and AM General applications. This part number PT9449 is also listed for specific rear applications with notes such as 32 spline, New Process 208, New Process 241C, and shaft-size requirements where applicable.

What It Is Used For

• Stopping transmission fluid seepage at the extension housing
• Replacing a worn or damaged rear transmission seal
• Restoring sealing performance after service on the transmission tail housing
• Addressing leaks on listed Chevrolet Silverado and GMC Sierra applications
• Supporting repair work on PT9449 fitments with rear-position notes

Installation Notes and Tips

Verify the exact year, make, model, position, and notes before ordering. Several applications require attention to drivetrain details such as 32 spline, New Process transfer case references, shaft size, or GVW notes. Confirm the transmission and housing configuration on the vehicle before installation. Professional installation is recommended for proper seal seating and leak prevention.

Quality Assurance

Use PT9449 as a catalog-matched replacement seal for the listed applications. Review the fitment notes carefully to confirm the correct transmission housing configuration before installation.