bevinsee Billet Coolant Port Flange Fitting w/ O-ring Clamp For BMW N54 N52 3.0L
Bevinsee Billet Aluminum Coolant Port Fitting Upgrade With Clamp For BMW N20/N26/N51/N52/N54/N55 Engines. The N54 engine sees failure at the plastic cylinder head outlet adapter connecting the cylinder head to the thermostat hose.