Ford F450 Differential Seal Kit - Rear - Yukon Gear & Axle - Inner Axle Seal - `99-`12. A direct-fit rear inner axle seal kit engineered for Ford F450 (and F550) models from 1999 through 2012, designed to replace worn or leaking differential seals and restore proper axle sealing.

This Yukon Gear & Axle inner axle seal kit (YMS710454) uses modern design and manufacturing methods to provide a precision fit for rear axle applications. It’s intended as an OEM-style replacement for the rear inner axle shaft seal on many F450/F550 trucks, helping prevent gear oil leaks and contamination while maintaining drivetrain reliability. The kit’s construction focuses on long service life and consistent sealing performance under typical highway and towing conditions.

Features

• Precision-molded sealing lip for tight fit and reduced leakage
• Durable elastomer and metal components for long service life
• Direct-fit for 1999–2012 Ford F450/F550 rear inner axle applications
• OEM-style replacement by Yukon Gear & Axle (part YMS710454)
• Ideal for rebuilds, axle repairs, or routine maintenance

If you have questions about fitment, compatibility with your axle, or installation, call us directly — we’re happy to help. We operate two service locations offering installation and customization in Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) • 562-981-6800 (CA)

If you plan to purchase multiple items, contact us for shipping discount options. We provide on-premises installation services at both locations.

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