The 1301-231 companion flange is designed for Toyota mid-ship applications and features a square pattern. It has a spline count of 23 with a spline diameter of 0.990 inches, ensuring compatibility with various driveline configurations.
The hub diameter measures 1.500 inches, with a thru hole of 1.530 inches. It has a pilot diameter of 1.808 inches and a bolt circle diameter of 3.340 inches, with 4 bolt holes for secure mounting.
Classified as light duty (LD), the face-to-end measurement is 2.234 inches. Originally designed to replace the 2WD trucks, it can also be used on 4x4s with slight machining of the hub diameter. The 1301-231 flange works in conjunction with the 1353-231 and 1353-232, and it pilots up to the 1302-15, 3102-15, or 3102-183CV components.
