Billet D20 Transfer Case Main Shaft Retainer, 66-77 Ford Bronco SKU: 8570F

Billet Aluminum Dana 20 Transfer Case Main Shaft Retainer

Add strength and style to your Early Bronco Dana 20 transfer case with this precision-machined Billet Aluminum Main Shaft Retainer. Whether you're tackling a full drivetrain rebuild or just replacing a worn-out part, this billet retainer is designed to handle the torque and stress that classic Broncos are known to throw down.

Made to fit 1966–77 Ford Broncos, this retainer replaces the factory cover with a component built from solid aluminum for increased durability and long-term reliability. Not only does it reinforce a critical point in your transfer case, but it also gives your undercarriage a clean, performance-inspired look.

• Fits Dana 20 transfer case: Direct replacement for main shaft retainer on 1966–77 Ford Broncos

• CNC-machined billet aluminum: Engineered for added strength and long service life

• Essential drivetrain component: Improves stability and load-bearing at the main shaft

• Great for restorations or upgrades: Boosts durability without altering fit

• Adds visual appeal: Clean billet finish looks sharp on any build

Made with billet aluminum, this Dana 20 main shaft retainer isn’t just tough - it adds a high-performance look that stands out under any early Bronco build.