PowerTrax No-Slip Traction System Differential Lock Assembly F-100 57-79 Drop-In 9” 31-Spline

Upgrade your 1957-1979 F-100’s traction capabilities with PowerTrax's No-Slip Traction System drop-in differential lock assembly! By locking both axle shafts together, it makes sure both rear tires spin at the same speed. It fits 9” Ford differentials and 31-spline axles.

Features and Benefits:
- Installs in stock open differential carrier housing with side gears
- Designed to fit 9” Ford differentials
- Fits 31-spline axles
- Locks both axle-shafts together
- Durable steel construction

Made from durable steel, this differential lock assembly provides lasting superior traction in off-road conditions. For a more straightforward integration, it fits into your stock open differential carrier with stock side gears. Since it also replaces the spider gears without affecting your ring and pinion settings, you won’t need extensive modifications.

Please Note: Professional installation is recommended for this part.