Most 2JZ water pump delete brackets are never flow tested. Ours is. We cut the flow restriction through our 2JZ water pump delete bracket by 47% before it went anywhere near a customer's engine. Here is the work. A 2JZ water pump delete removes the belt driven mechanical pump and replaces it with a remote electric pump, using a bracket that blanks the pump housing and routes coolant into the block. On the 1JZ and 2JZ the same part usually carries the alternator, which is why

A billet vs welded coolant tank breakdown - why welded seams fail under heat, and how our GR Yaris tank avoids that failure point entirely.