9in Ford Housing Seal Purple

The WINTERS 9-inch Ford Housing Seal Purple (Part Number 3485) is an inner axle housing seal engineered for precision fit on Ford 9-inch differentials with 2.700-inch ID steel axle tubes. This aluminum O-ring style seal features purple anodized protection and meets OEM tolerances for leak-free operation in high-performance and daily-driven applications. The seal's compact design and verified dimensional accuracy make it a critical component for maintaining differential integrity during extended use.

Dimensioned at 2.68 inches outer diameter, 1.15 inches inner diameter, and 1.64 inches thick, this seal is sized specifically to prevent fluid weepage at the axle tube interface. The aluminum construction combined with purple anodized finish provides corrosion resistance in both road salt and moisture-heavy environments. Proper installation of this seal is essential to prevent differential lubricant loss, which directly impacts gear wear rates and overall drivetrain longevity. The 0.47-pound weight reflects its compact, precision-engineered design.

This seal is essential for Ford 9-inch differential rebuilds, axle tube replacements, and routine maintenance on street rods, muscle cars, off-road vehicles, and classic truck restorations. Technicians and enthusiasts rebuilding a Ford 9-inch commonly replace seals during disassembly to ensure a fresh barrier against leakage. Whether replacing a failed seal or performing preventive maintenance, this WINTERS component delivers the OEM-equivalent fit and finish required for professional-grade results.