I purchased the 2003 Toyota 4Runner brake pump master cylinder. The part was ~$700, much cheaper than the $2000 Toyota part.
Well you get what you pay for. The Jcarpart doesn’t work correctly- motor/pump is loud, ABS actuators for know reason, don’t know what’s going to happen when you press the brakes. The warranty folks wanted me to swap the motor of the new part with the original Toyota part - not an easy task. They offered a 25% refund. Total fail!!