<ul> <li>This water pump is 100% new and designed to meet exact original equipment specifications. All water pumps are also 100% tested to ensure proper functionality.</li> <li> Torque testing is performed to verify the proper impeller- shaft mating. Torque testing can detect loose impeller- shaft press fits.</li> <li> Bosch utilizes OE mating parts and accessories to verify proper fitment. Component mating such as pulley, brake plate, housing and tensioners are included in this fitment verification.</li> <li> Water pumps are vacuum leak tested to ensure proper sealing. This test can detect leaks throughout the housing, seals, tube binding and plug leakage.</li> </ul>