ROTOR KIT, 700R4 / 4L60E / 200-4R, 13 VANE, 1982-UP 0.7069″, FITS ALL 700R4 / 4L60E.700R4 / 4L60E high performance / high volume pump rotor kits. Turn your seven or ten vane pump into a thirteen vane pump. This kit will eliminate irregular pump pressure above 5,000 RPM. Transmission must be removed to install this kit. (When using a 13 vane pump don’t raise the motor speed above idle until the transmission is full of fluid, doing so may break the pump rotor.