Radium Engineering Fuel/Brake Line Retain Kit For Nissan S13/S14/S15/R32/R33/R34. Go Race Parts Presents.. Our Special on Radium Engineering Performance Products! This listing is for Radium Engineering Fuel/Brake Line Retain Kit For Nissan S13/S14/S15/R32/R33/R34. Since 2010, Radium Engineering’s goal has been to simply design and produce high quality aftermarket automotive performance products. Radium Engineering relies on a core team with a passion for innovation to lead the company toward advancement in the industry. Set of brackets to retain fuel lines and brake lines on underside of Nissan vehicles including S13, S14, R32, R33, R34 and more. Billet aluminum, with hardware. We pride ourselves in offering the best pricing and customer service on the internet!