<p>The invention refers to an adjustable mechanical coolant pump (10) for an internal combustion engine. The pump (10) comprises a pump rotor wheel (14) with an axial inlet. The pump rotor wheel (14) pumps a coolant radially outwardly. The pump comprises numerous variable pump stator blades (40) being pivotably arranged radially outwardly of and concentrically with the pump rotor wheel (14), A control ring (32) is provided which simultaneously pivots the blades (40) when the control ring (32) is rotated. The control ring (32) is rotated by an actuator, thereby pivoting the blades (40) between an open and a closed position. A pump housing body (12) supports the pump stator blades (40) and the control ring (32). According to the invention, the pump stator blades (40) and the control ring (32) are captively mounted at a separate static blade holding frame (18) which is mounted to the pump housing body (12).</p>
