Nissan DDSEN STD 2007 Manual Diesel Datsun Diesel Engine YD25 Spare Parts Salvage And there is a gearbox with a problem in the third gear only. The engine head is clean and a few months ago I replaced the valve seals and lapped the valves for 800 SAR. And the cylinder is cone 10, new pistons, and new piston rings. The oil pump and timing cover are new original factory parts, installed, bought for 800 SAR. Diesel pump, injectors, turbo, and starter are not good and not working. The starter motor has been sold. Air pump is excellent.