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Killer B’s Water Pump Housing is a much more robust design. Designed using state of the art 3-D CAD software to assure maximum flow with minimum turbulence for the best performance possible!
Install note: The inlet is slightly longer than the stock one, so you will have to trim the lower radiator hose accordingly.
Specify just the inlet, or a full kit that includes the lower radiator hose, cut-proof clamps, and gasket.
Fits all 2008-2014 Subaru WRX, and all 2008-2021 WRX STI.
