Avensis radiator drain *****

Hi 

does anyone know the dimensions of the o ring seal on the radiator drain ***** on a Avensis mk3 ?

Topic moved to the Avensis forum

its better not to do so from the plug drain because it will damage and\or leak after.

do it from the pipe, take the lower pipe out and all will come out.

When I had to replace the water pump on my Avensis Valvematic, I drained the coolant from the radiator plug. I Srewed the drain plug back, though I am not sure if I replaced the rubber seal! I have lots of seals and washers of various sizes. They are cheap to buy in many places like B&Q or try Toyota or other car places. I have not lost any coolant since the replacement back in 2020 - 4 years.