Aluminum. Black anodized. With O-ring.
Radium Engineering anodized billet aluminum adapter fittings can be used in any application using a 7/16"-20 O-ring port. This is the same thread pitch used in -4AN (ORB=O-Ring Boss). They all feature FKM O-rings for all oil and fuel types.
CNC billet aluminum round plug; Uses internal hex
Radium Engineering 8AN Orb Plug CNC billet aluminum round plug; Uses internal hex
Radium Engineering 10An Orb Plug CNC machined Aluminum; Black anodized; low profile socket head plug
Radium Engineering specializes in high-quality aftermarket automotive performance products for racing and high-performance applications. The company's core product lineup features revolutionary fuel delivery systems, fuel cells, and PCV oil catch can systems, all designed with meticulous attention to both functionality and engineering detail. Through extensive R&D, computer simulation, and rigorous testing, Radium delivers an expanding collection of motorsport parts and application-specific accessories trusted by top competitors and enthusiasts worldwide who demand products that exceed expectations and outperform low-quality alternatives.
