Radium Engineering for Toyota Supra JZA80 Fuel/Brake Line Retainer Kit. FUEL BRAKE LINE RETAINER KIT, MKIV SUPRA CNC machined and anodized. Uses OEM mounting studs and hardware. With over 20+ years of experience in the automotive industry and in business since 2004, we strive to provide you with the best products and customer service. Our strong relationship with manufacturers and suppliers allows us to get you the parts you want fast and at the best prices possible. Most e-mails are answered within 24 hours, including weekends and holidays. Processing begins as soon as an order has been placed, therefore we cannot change, cancel or modify orders once they have been confirmed.