looking on toyota diy glanzas didnt come with them its listed on the uk spec but says not applicable just a different banjo bolt by the looks of it that stop polisation in the rail. just been having a read about them and found this Fuel Pulsation Damper Fuel Pulsation Damper. What is it? A fuel pulsation damper is a device used to regulate the oscillation of fuel caused by the injectors opening and closing and smooth this out. Sometimes referred to as a FPD. At this time I do not have a diagram to show you, so you will need to use your imagination as I describe it the best I can. Sorry.