This is on the 1kz-te. I was looking for a place to mount a water temp sender in the block under the intake and ended up with a leak. I think the leak is from a small metal pipe coming out of the block that runs coolant (via rubber hose) to the throttle body. The second coolant hose coming from the throttle body runs to the head, slightly higher and farther back on the motor. That connection is not leaking.