ATP Parts LO-42 Automatic Transmission Extension Housing Seal

Automatic Transmission Extension Housing Seal for Ford Applications

ATP Parts LO-42 is an automatic transmission extension housing seal built as an exact-fit replacement for select Ford, Lincoln, and Mercury rear-wheel-drive applications. It is specified for vehicles with a 3/8" lip extension and is listed for transmissions including 4R70W, 4R75W, and select AODE-W applications.

Key Features

• Exact-fit replacement automatic transmission extension housing seal
• Designed for 3/8" lip extension applications
• Fits select 4R70W, 4R75W, and AODE-W transmission setups
• Direct replacement for common Ford, Lincoln, and Mercury driveline applications
• ATP Parts LO-42 for transmission sealing service

Detailed Description

ATP Parts LO-42 is a transmission seal and gasket component used at the extension housing to help maintain a proper seal between transmission sections. The ATP transmission seals and gaskets line is positioned as an exact-fit replacement solution, making this part a practical choice for service work on Ford Crown Victoria, Ford Mustang, Lincoln Town Car, Mercury Grand Marquis, and other listed applications. This part cross-references AMS Automotive 4764 for the same application.

Compatible vehicle coverage includes 1992-2011 Ford Crown Victoria, 1992-2005 Lincoln Town Car, 1992-2010 Mercury Grand Marquis, and additional Ford truck, van, SUV, and performance models listed below. The LO-42 part number is also referenced in transmission sealing searches for Ford Crown Victoria extension housing seal and Ford Mustang automatic transmission extension housing seal service.

Vehicle Fitment

• Fits 2011 Ford Crown Victoria, W/ 3/8" Lip Extension; Only Fits 4R70W, 4R75W
• Fits 2008-2010 Ford Crown Victoria, W/ 3/8" Lip Extension
• Fits 2006 Ford Crown Victoria, W/ 3/8" Lip Extension; Only Fits 4R70W
• Fits 1992-2005 Ford Crown Victoria, W/ 3/8" Lip Extension
• Fits 2007-2010 Mercury Grand Marquis, W/ 3/8" Lip Extension
• Fits 1992-2005 Mercury Grand Marquis, W/ 3/8" Lip Extension
• Fits 1992-2005 Lincoln Town Car, W/ 3/8" Lip Extension
• Fits 1994-2004 Ford Mustang, W/ 3/8" Lip Extension
• Fits 2003-2004 Mercury Marauder, W/ 3/8" Lip Extension
• Fits 1997-1999 Ford E-150 Econoline, W/ 3/8" Lip Extension
• Fits 1997-1999 Ford E-250 Econoline, W/ 3/8" Lip Extension
• Fits 1997-1999 Ford Expedition, W/ 3/8" Lip Extension
• Fits 1996-1999 Ford Explorer, W/ 3/8" Lip Extension
• Fits 1994-1999 Ford F-150, W/ 3/8" Lip Extension
• Fits 1997-1999 Ford F-250, W/ 3/8" Lip Extension
• Fits 1994-1998 Lincoln Mark VIII, W/ 3/8" Lip Extension
• Fits 1997-1999 Mercury Mountaineer, W/ 3/8" Lip Extension
• Fits 1994-1997 Ford Thunderbird, W/ 3/8" Lip Extension
• Fits 1994-1997 Mercury Cougar, W/ 3/8" Lip Extension
• Fits 1994 Ford F-250, W/ 3/8" Lip Extension; Only Fits 4R70W, AODE-W
• Fits 1992 Ford F-250, W/ 3/8" Lip Extension; Only Fits 4R70W, AODE-W
• Fits 1992-1993 Ford Thunderbird, W/ 3/8" Lip Extension; Only Fits 4R70W, AODE-W

Common Issues This Seal Can Address

• Transmission fluid seepage at the extension housing
• Leak repair during rear seal service
• Seal replacement after transmission removal or driveline service
• Maintenance on high-mileage Ford, Lincoln, and Mercury automatic transmissions
• Restoration of proper sealing at the tail housing area

Installation Notes and Tips

Verify the transmission family before installation, especially on 1992-1994 and 2006-2011 applications where fitment is limited to specific units such as 4R70W, 4R75W, or AODE-W. Confirm the vehicle uses the 3/8" lip extension noted in the fitment data. Clean the sealing surfaces thoroughly and inspect the extension housing for wear or damage before installing ATP Parts LO-42.

Quality Assurance

ATP Parts positions this transmission seal as an exact-fit replacement part for service-grade sealing performance. The LO-42 is built for direct replacement use in the listed Ford, Lincoln, and Mercury applications, with fitment coverage spanning 1992-2011 model years.