Koyo VH020241 36mm Radiator for 1990-1996 Nissan 300ZX NA / 1989-1994 Maxima MT

Vehicle Fitment

• 1990-1996 Nissan 300ZX Non-Turbo (Z32, VG30DE 3.0L DOHC V6, RWD, MT)
• 1989-1994 Nissan Maxima (J30, VG30E 3.0L SOHC V6, FWD, MT)

Fitment Notes

• Manual Transmission (MT) ONLY for both applications. Automatic transmission vehicles require a separate external transmission cooler.
• Does NOT fit the 1990-1996 Nissan 300ZX Twin Turbo (VG30DETT) - this radiator is for Naturally Aspirated (Non-Turbo) 300ZX models only.
• The OEM factory radiator cap is compatible with this radiator. The Koyorad SK-C13 deep plunger-style cap is also an optional compatible upgrade (sold separately).
• Retains all OEM fan shroud mounts, coolant hose positions, and factory mounting locations - no drilling, cutting, or chassis modification required.
• Nissan Maxima fitment covers the J30 third-generation (1989-1994) with the VG30E engine and manual transmission.

Features

• Hyper V-Core Series 36mm high-density core - engineered specifically for vehicles with limited space and restricted airflow where traditional N-Flo dual-pass designs are not feasible due to inlet/outlet positioning.
• Specially designed fin and tube pitch significantly increases core surface area while maintaining excellent air circulation through the radiator - delivering meaningful thermal gains within a compact footprint.
• Full aluminum construction replaces the OEM plastic end-tank / aluminum core radiator, eliminating the failure modes associated with plastic tank cracking, warping, and seal degradation.
• Direct bolt-in fit with OE-specific mounting locations for all fan shrouds, inlet and outlet hoses, and upper and lower mounting pins - true plug-and-play installation with no modifications.
• Nocolok furnace brazing bonds all tubes, fins, headers, and tank brackets for long-term resistance to vibration, thermal cycling, and sustained high-temperature operation.
• Hand-crafted Heliarc (TIG) welds on every radiator produce the strongest possible aluminum-to-aluminum bond at all tank-to-core junctions.
• Triple pressure tested during manufacturing to verify structural integrity and confirm leak-free performance before leaving the factory.
• OEM coolant hoses are retained - no hose replacement required at installation.
• Manufactured in Koyorad's privately owned, ISO 9001-certified Japanese facilities with in-house quality oversight at every stage of production.

Specifications

• Part Number: VH020241
• Series: Hyper V-Core (VH Series)
• Core Thickness: 36mm (1.417")
• Core Height: 15.50"
• Core Width: 27.00"
• Core Type: High-density Hyper fin and tube pitch, single-pass
• Material: Full aluminum construction - tanks, core, filler neck
• Brazing Method: Nocolok furnace brazed
• Welding Method: Hand TIG (Heliarc) welded
• Pressure Testing: Triple pressure tested
• Radiator Cap: OEM factory cap compatible; Koyorad SK-C13 also compatible (sold separately)
• Hose Compatibility: OEM coolant hoses retained
• Transmission Compatibility: Manual Transmission (MT) only; AT requires external cooler
• Weight: Approximately 12.9 lbs
• 300ZX Platform: Nissan Z32 (RWD) - Non-Turbo only
• Maxima Platform: Nissan J30 (FWD)

Included Components

• 1x Koyo VH020241 Full Aluminum Hyper V-Core Radiator

Product Description

The Koyo VH020241 is a 36mm full-aluminum Hyper V-Core Series radiator engineered for two distinct manual transmission applications: the 1990-1996 Nissan 300ZX Non-Turbo (Z32, VG30DE) and the 1989-1994 Nissan Maxima (J30, VG30E). This radiator is part of Koyorad's Hyper V-Core lineup - a series developed specifically for vehicles where limited engine bay space and factory inlet/outlet positioning make a traditional dual-pass N-Flo configuration impractical. The Hyper V-Core's specially engineered fin and tube pitch increases core surface area beyond what a conventional core of the same thickness could achieve, delivering strong thermal performance gains in a compact package. For the naturally aspirated Z32 300ZX in particular, this is the correct Koyo racing radiator - the Twin Turbo model is not supported by this part and requires a separate unit.

Installation is a true bolt-in process on both supported platforms. The VH020241 retains all factory fan shroud mounts, OEM coolant hose connection points, and stock mounting pin locations - no drilling, cutting, or modification is required. Unlike several other Koyorad racing radiators, the OEM factory radiator cap is compatible with this unit, making the installation even more straightforward. Owners who want to upgrade the cap can optionally use the Koyorad SK-C13, which is also compatible and provides a 1.3 bar deep plunger-style seal for slightly elevated system pressure. The full aluminum construction directly addresses the most common failure point on these platforms - the OEM plastic end-tank / aluminum core radiator - replacing it with a significantly more durable all-aluminum assembly that withstands repeated heat cycling without tank cracking or seal failure.

Every VH020241 is hand-assembled, Nocolok furnace brazed, individually Heliarc TIG welded, and triple pressure tested at Koyorad's privately owned, ISO 9001-certified facilities in Japan before shipment. This radiator is a manual transmission-only application for both the 300ZX and the Maxima - automatic transmission vehicles on either platform require the addition of a separate external transmission cooler. For Z32 300ZX owners running track days, autocross, or spirited street driving on the naturally aspirated platform, the VH020241 is the correct Koyo drop-in upgrade that provides meaningful cooling headroom over the stock unit while retaining full OEM compatibility.