Nissan Fairlady/300ZX Z32 Radiator Cap, 1.2 Bar

Terra Firma Automotive supplies genuine Nissan cooling system components that keep your Z32 Fairlady or 300ZX operating at the exact pressure and temperature range Nissan engineered for reliable long-term performance. This 1.2 Bar radiator cap is the exact OEM replacement designed to maintain proper system pressure, allowing the coolant to reach optimal operating temperature while preventing boil-over and cavitation in the high-heat environment of both naturally aspirated and twin-turbo VG30 engines. It features precise valve calibration and a high-quality sealing gasket that ensures consistent pressure regulation and a leak-free seal even under demanding conditions.

Z32 owners understand how a worn or incorrect radiator cap can cause overheating, coolant loss, premature water pump failure, or inconsistent temperatures that affect engine efficiency and longevity. Replacing it with this authentic 1.2 Bar cap instantly restores factory cooling system pressure, improving heat dissipation during spirited driving, track use, or hot-weather cruising. Its durable construction and exact pressure rating deliver dependable performance that generic caps often fail to match, protecting your investment whether you drive a daily twin-turbo or preserve a low-mileage naturally aspirated example.

At Terra Firma Automotive, we are the trusted premium source for hard-to-find OEM cooling parts that serious enthusiasts and restorers rely on. Whether you are performing a full cooling system refresh, replacing hoses and thermostat, addressing overheating issues, or completing a detailed engine bay restoration on your 1989–1996 Fairlady Z or 1990–1996 300ZX, this radiator cap upholds the precise engineering and thermal management standards that define these legendary Nissan sports cars.

• Fits 21430 Location
• Genuine Nissan OEM 1.2 Bar radiator cap (21430-54P00)
• Direct replacement for all Z32 models 1989–1996 (NA & TT)
• Maintains factory cooling system pressure for optimal performance
• High-quality sealing gasket prevents leaks and boil-over
• Essential for cooling system service, overheating prevention, or full restorations
• Ideal for daily drivers, performance builds, and show-quality cars
• Critical for protecting the engine and cooling components long-term
• USDM 300ZX (Z32): 1990–1996 (VG30DE & VG30DETT – NA or TT)
• JDM Fairlady Z (Z32): 1989–1996 (VG30DE & VG30DETT – NA or TT)
• Engine Compatibility: Fits all VG30DE and VG30DETT engines (Naturally Aspirated or Twin-Turbo)
• Note: Genuine Nissan 1.2 Bar (17.4 psi) radiator cap