300ZX (Z31) Upper Coolant Bulkhead VG30 Vacuum Ports: (2x) 1/8" NPT

Vacuum Ports: (2x) 1/8" NPT

The CNC-machined billet intake flange provides tighter dimensional control at the runner inlets

Please read our warranty for more information

25 exhaust studs and the larger M10x1

300ZX (Z31) Upper Coolant Bulkhead VG30 Vacuum Ports: (2x) 1/8" NPTEucadian Performance is proud to offer a replacement upper coolant bulkhead for your Z31! The factory units have been exposed to water, coolant, and various chemicals for over 30 years, making them susceptible to rust and deterioration. These degraded residues can circulate within the cooling system and can lead to leaks and subpar cooling. Using Eucadian Performance's innovative solution, our replacement bulkheads are manufactured from high quality