ATP Parts HO-8 Automatic Transmission Extension Housing Seal - Rear

Automatic Transmission Extension Housing Seal for Long Extension Applications

ATP Parts HO-8 is an exact-fit automatic transmission extension housing seal for select rear-drive trucks, vans, and SUVs with a long extension housing. It is built for vehicles with a 2.5-inch outer diameter and no boot, helping restore a proper seal at the transmission tail housing.

Compatible with applications such as Ford F-150, Dodge Ram 2500, and Jeep Grand Cherokee, this seal supports a direct replacement repair for common extension housing leak concerns. ATP Parts HO-8 is also cross-referenced with National 7038SA for the same application.

Key Features

• Exact-fit automatic transmission extension housing seal
• For long extension housings over 133-inch wheelbase applications
• 2.5-inch outer diameter specification
• Fits no-boot configurations
• Direct replacement for select Ford, Dodge, Jeep, Lincoln, and Mitsubishi applications
• ATP Transmission Seals and Gaskets are exact fit replacement parts

Detailed Description

ATP Parts HO-8 is a transmission sealing component used at the extension housing to help maintain a secure seal where the driveshaft area meets the transmission tail section. It is specified for vehicles with a long extension, more than 133-inch wheelbase, no boot, and a 2.5-inch outer diameter. Confirmed applications include 1989-2004 Jeep Grand Cherokee, 1989-2003 Dodge Dakota, 1990-2001 Ford F-150, and 1994-2001 Dodge Ram 1500, along with many other Ford, Dodge, Lincoln, and Mitsubishi models.

This part number, HO-8, is intended for repair work where the original extension housing seal has worn, hardened, or begun leaking. It cross-references National 7038SA for the same application.

What It Helps Fix

• Transmission fluid seepage at the extension housing
• Leaks around the tail housing seal area
• Seal wear from age, heat, and driveline movement
• Fluid loss that can lead to low transmission fluid level
• Service issues on long-extension rear-drive applications

Installation Notes and Tips

Verify the transmission configuration before ordering. This seal is listed for long extension applications over 133-inch wheelbase with a 2.5-inch outer diameter and no boot. Confirm the vehicle year, make, model, and transmission setup against the fitment list, especially on Dodge Ram, Ford Econoline, and Jeep Grand Cherokee applications.

Inspect the extension housing surface for wear, scoring, or contamination before installation. Clean the sealing area thoroughly and replace any damaged components that could affect seal performance.

Quality Assurance

ATP Parts positions this seal as an exact-fit replacement part for transmission service work. The HO-8 is built to match the listed application requirements for a direct repair on select automatic transmission extension housings.