Radiator - 1991 300ZX Z32

The Nissan Z32 300ZX Twin Turbo utilizes heavy-duty cooling components, specifically radiator part numbers 21410-40P00 (1990-1993 production) and 21410-40P01 (1994-1996 supersession) to manage VG30DETT thermal loads. Interchangeability spans 1990-1996 exclusively for twin-turbo models; naturally aspirated VG30DE variants employ thinner single-row cores with incompatible hose geometries and mounting brackets. When junkyard hunting, inspect plastic end tanks for characteristic stress cracks common after 100,000 miles, verify automatic transmission cooler fittings match your specific AT or MT configuration, and confirm all four fan shroud mounting tabs remain unbroken. Installation requires removing the front bumper support assembly, transferring the original bleed screw hardware, and meticulous coolant bleeding via the heater control valve to eliminate air pockets. While aftermarket aluminum replacements exist, genuine Nissan units maintain precise sensor port placement for the twin turbo's dual temperature switches and auxiliary fan control systems.