CSF 13+ BRZ / 13-20 Toyota 86 / 22+ GR86 Aluminum Filler Neck w/ High Pressure Radiator CapReplace the weak plastic auxiliary filler neck of your FRS BRZ 86 with an all aluminum 100% TIG welded and mirror polished upgraded version from CSF. Complete with a 1. 4bar high pressure cap with a high quality "mini style" radiator cap, embossed with the CSF logo. This cap style is most commonly used with high performance aftermarket caps if you wish to replace the CSF cap with another brand. Easy drop in replacement with no modifications can be