Yukon Gear Ford 9in Differential Dropout Assembly 31 Spline 3.70 Ratio

Yukon Gear & Axle is known for building solid drivetrain components, and this Ford 9-inch differential dropout assembly is no exception. If you're working on a classic Ford truck, muscle car, or Bronco and need to replace or upgrade your rear differential's third member, this unit is built to get the job done. It's designed to fit a wide range of Ford vehicles, including models like the Ford Bronco, Ford F-150, and Ford Mustang, making it a versatile option for many projects.

What sets this dropout assembly apart is that it comes fully assembled and set up by expert Yukon technicians. This means it's properly shimmed and the backlash is set to spec right out of the box. Your job is simply to install the third member into your existing differential housing, attach your differential cover, add the proper gear oil, and you're ready to go. The nodular iron case is a key feature here; it's stronger than standard cast iron, which improves rigidity and helps handle more power. This reduced deflection means the gears maintain consistent contact, which is crucial for smooth operation and a long service life.

This assembly features a 3.70 gear ratio, which is a popular choice for a good balance between off-the-line acceleration and highway cruising. It's also built with 31 splines, a common and strong spline count for many Ford 9-inch rearends. Keep in mind that this unit does not include the yoke, so you'll need to reuse your existing one or purchase a compatible one separately. With this complete, pre-set dropout, you're getting a well-built core component that simplifies a complex driveline job.