Genuine Original Equipment Jaguar water pumps. This means that the water pump components have been made to original Jaguar drawings and conform with all material and dimensional specifications. All Jaguar water pump castings are leak-tested prior to final assembly. The components are assembled to specification (exacting tolerances determined by Jaguar) e.g. pulleys are assembled to the correct height to minimise drive belt wear. Jaguar water pump Impellers are assembled to the correct height to ensure optimum performance and avoid a potentially disastrous foul condition. Jaguar water pump bearings and seals are designed to withstand loads and forces prescribed by Jaguar as a result of exhaustive testing under extreme conditions. Assembly processes use load-monitoring to ensure Jaguar water pump components will not fail prematurely.