ATP Parts TO-55 Automatic Transmission Extension Housing Seal - Outer

Automatic Transmission Extension Housing Seal

ATP Parts TO-55 is an automatic transmission extension housing seal made for exact-fit replacement on a wide range of Chrysler, Dodge, Plymouth, and select Toyota applications. It is built for drivers servicing transmission leaks at the extension housing and output area, with fitment that spans many 1981-2000 vehicles.

Key Features

• Exact-fit replacement seal for automatic transmission extension housing service
• Paraphrased from ATP’s product line: built as a direct replacement part with no compromise on fit
• Fits Outer and N/A positions across confirmed applications
• Used on Chrysler, Dodge, Plymouth, and Toyota models listed in the fitment data
• Part number TO-55 for catalog and cross-reference lookup

Detailed Description

ATP Parts TO-55 is an automatic transmission extension housing seal for vehicles that need a precise sealing surface at the transmission tail housing or output area. This seal is listed for applications such as 2000 Chrysler Sebring, 1997-2000 Dodge Caravan, 1997-2000 Dodge Grand Caravan, and 1997-2000 Plymouth Voyager, along with many earlier Chrysler, Dodge, and Plymouth platforms. It also includes select Toyota Pickup output applications. This part cross-references Timken 3459S for the same application.

What This Seal Helps Address

• Transmission fluid seepage at the extension housing
• Leakage around the output shaft area
• Sealing wear from age, heat, and fluid exposure
• Service needs during transmission tail housing repair
• Replacement of a damaged or hardened original seal

Installation Notes and Tips

Verify the transmission family and position before ordering, especially on Chrysler A604/41TE-related applications noted in the fitment data. Confirm whether your vehicle uses the Outer or Output configuration listed for the exact model year. Clean the sealing bore and shaft surface thoroughly before installation, and inspect the housing for wear or scoring that could affect sealing performance.

Quality Assurance

ATP Transmission Seals and Gaskets are positioned as exact-fit replacement parts for transmission sealing service. Use the confirmed vehicle fitment and transmission notes to match the correct application before installation.