Radium Engineering Fuel/Brake Line Retainer Kit Applications: Toyota Supra JZA80 The Radium Engineering retainer kit supports large aftermarket fuel lines under the MKIV (JZA80) Toyota Supra. The retainers are made from 6061 aluminum and anodized to resist oxidation. Features CNC Anodized Aluminum Retainers Uses OEM Studs and Hardware No Drilling Required Notes: 1. This kit does not include aftermarket fuel lines. There is no way of determining what size fuel lines can be used with these retainers as there are many different types (rubber, braided, PTFE, aluminum, steel, etc). Reference the dimensions illustrated above to determine fuel line compatibility. Images of item are shown above may be actual or for product reference only.