41mm water pump wrench used on older GM (Vauxhall/Opel) engines where the water pump is used to adjust the cambelt tension. Size: 41mm x 1/2D. Engines: 1.2, 1.4, 1.4 16v, 1.5, 1.6d, 1.6 16v. Equivalent to OEM KM421A (J42492). These engines…View more
41mm water pump wrench used on older GM (Vauxhall/Opel) engines where the water pump is used to adjust the cambelt tension. Size: 41mm x 1/2D. Engines: 1.2, 1.4, 1.4 16v, 1.5, 1.6d, 1.6 16v. Equivalent to OEM KM421A (J42492). These engines can also be found in some Chevrolet (Daewoo) vehicles.