Large Ford/Olds Axle Bearing Sealed bearings 3.150" O.D. x 44mm x 1.774" I.D. Sold as a pair Includes lock rings For 40-spline axles. Sealed bearings 3.150 inch O.D., 1.774 inch I.D. Includes lock rings. For all housing ends that utilize the large Ford, Olds, Pontiac type bearings, and Modular Housing end bells with 3.150 inch outside diameter. The bearings retain the original inboard shield that helps preserve the factory pre lubed grease. For 40 spline axles.