Size approx: ID 42mm, OD 56mm, H 25mm. Water inlet Stainless steel Radiator Filler Neck. 1 x Filler Neck. Breather thread:NPT1/16. High Standard 6061 Aluminum. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
This product would be ideal for vehicles that require a silver aluminum filler neck replacement with an ID of 42mm and an OD of 56mm.