●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 1/2"D. ●Engines: 1.2, 1.4, 1.4 16v, 1.5, 1.6d, 1.6 16v, these engines can also be found in some Chevrolet (Daewoo) vehicles. ●OEM: KM421A / J42492
