Installation time is approx. 6.0 hours. Installation time is roughly 6.0 hours. If the fan has to be replaced, this will Should it be necessary to replace increase the installation time by the fan, the installation time increases approx. 0.75 hours. On vehicles with N55 by roughly 0.75 hours. On vehicles with engines, replacing the right engine the N55 engine, replacement of the right engine support block will increase the engine support block increases installation installation time by approx. 1.5 hours. This time by roughly 1.5 hours. These figures may vary, depending on the condition and may vary according to the condition and equipment specification of the vehicle. equipment level of the specific vehicle. ***** *****