The Radium Engineering Top Feed Fuel Rail Adapter for Ver 8/9 EJ207 2.5I EJ253 is designed so it upgrades the existing fuel-rail system with the additional hardware or plumbing needed for higher-flow performance use. It lets the supported application move beyond the stock fuel arrangement without replacing unrelated parts of the system.

Injector height, upper/lower O-ring diameter, and plumbing requirements vary by engine. Match the exact application and injector configuration.