Advance Adapters 50-3901 6R80 10R80 to Bronco Dana 20 Transfer Case Adapter Kit

The Advance Adapters 50-3901 is an aluminum transfer case adapter kit designed to mate the Ford 6R80 or 10R80 automatic transmission to the classic Bronco Dana 20 transfer case. This kit is a purpose-built solution for engine and transmission swap builds, allowing builders to run a modern Ford automatic transmission while retaining the iconic Dana 20 transfer case.

The Ford 6R80 six-speed automatic is a robust, torque-capable transmission found behind Ford V6 and V8 engines, and is a popular choice for Coyote and small-block swaps. The 10R80 ten-speed automatic can also be used with this adapter, as it shares the same rear bolt pattern as the 6R80. The adapter assembly is compatible with any 1966–1977 Bronco Dana 20 transfer case, making it an ideal fit for classic Early Bronco restoration and restomod projects.

Key Features:

• Mates Ford 6R80 or 10R80 automatic transmission to the Bronco Dana 20 transfer case
• Compatible with all 1966–1977 Early Ford Bronco Dana 20 transfer cases
• 10R80 compatible — shares the same bolt pattern as the 6R80
• Constructed from high-quality aluminum for strength and reduced weight
• Sold as a complete kit with all necessary hardware for installation
• Allows retention of the Dana 20 transfer case during a modern transmission swap
• Engineered and manufactured by Advance Adapters — an industry leader in drivetrain conversion solutions

The Advance Adapters 50-3901 is sold as a complete adapter kit, simplifying the conversion process for custom builds and engine swap projects. Advance Adapters has decades of experience engineering precision drivetrain adapters, making this kit a trusted choice for builders seeking reliable, performance-proven fitment.