... stock Bearing steel or stainless steel Water pump bearings are primarily used in automotive water pumps, basically consisting of standard double row ... two rows of balls; WIB, BWF, WS, WK, 885000 series, etc.2) Ball-roller: with one row of balls, one ... , WKH, 665000 series,etc.1) Ball-ball water pump bearings:2) Ball-roller water pump bearings: ball-ball or ball-roller water pump bearing 665003 /885094S ...