SKF 7556 Manual Transmission Seal - Front or Inner

Manual Transmission Seal for Ford and Mercury Applications

SKF 7556 is a manual transmission seal built around a nitrile sealing surface and precise dimensional sizing for the shaft and housing interface. It is designed for Ford, Mercury, Lincoln, Jaguar, and Jeep manual transmission applications where reliable fluid retention and contamination control matter.

With a 0.750 shaft diameter, 1.066 outside diameter, and 0.188 width, SKF 7556 supports a broad range of classic and late-model drivetrain service needs. This part number is commonly searched for Ford F-150, Mustang, Ranger, and Bronco manual transmission seal replacement work.

Key Features

• Manual transmission seal from SKF
• Nitrile sealing surface for fluid sealing performance
• 0.750 shaft diameter for matched fitment
• 1.066 outside diameter and 0.188 width
• Engineered for lubricant retention and contaminant exclusion
• Fits a wide range of Ford, Mercury, Lincoln, Jaguar, and Jeep vehicles

Detailed Description

SKF 7556 is a transmission sealing component for manual gearbox service, using premium materials and application-specific dimensions to help maintain proper sealing at the shaft interface. SKF has a long history in seal design, and this part reflects that focus on controlled fit, material selection, and durability in demanding driveline environments. This part cross-references 156846R91 and D5AZ7B498A for the same application.

Compatible vehicle coverage includes Fits 1996-2004 Ford Mustang, N/A; Fits 1975-2009 Ford F-150, N/A; Fits 1983-2008 Ford Ranger, N/A; and Fits 1973-1996 Ford Bronco, N/A. It also appears in manual transmission service for Ford Crown Victoria, Mercury Grand Marquis, Lincoln Town Car, and Ford Explorer applications.

What It Helps Address

• Transmission fluid seepage at the shaft seal area
• Contamination entering the manual transmission housing
• Wear-related sealing loss during drivetrain service
• Seal replacement during clutch or transmission repair
• Maintenance on older Ford, Mercury, Lincoln, and Jeep manual transmissions

Installation Notes and Tips

Verify shaft diameter, outside diameter, and width before installation to confirm the seal matches the transmission case and shaft. Inspect the shaft surface for scoring or wear, and clean the sealing bore thoroughly before pressing the seal into place. Confirm the application notes for inner-position or non-ZF and non-Borg Warner configurations where listed in the fitment data.

Quality Assurance

SKF manufactures seals to specific designs and quality standards, using materials selected for the application and operating environment. The brand’s seal engineering background and long production history support consistent fit and long service life in transmission repair.