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Performance Radiator for Nissan 370Z (2010-2020) 3.7L



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High-Capacity Aluminum Performance Radiator for 2010-2020 Nissan 370Z

Direct-fit replacement cooling solution designed to prevent thermal breakdown during high-stress driving. Replaces the degradation-prone OEM plastic-tank radiator with a full aluminum core and condenser combo to lower coolant temperatures and maintain optimal thermal efficiency.

The Stock Z34 Cooling Weakness

The factory radiator on the VQ37VHR is adequate for standard commuting but struggles under sustained load, spirited canyon runs, or track days. The OEM design relies heavily on plastic end tanks crimped to a thin aluminum core. Over time, heat cycling causes the plastic to become brittle, leading to stress cracks and sudden coolant pressure loss. Furthermore, the limited fluid capacity and restrictive flow dynamics of the stock core quickly result in heat soak, triggering ECU power-pulls to protect the engine when coolant temperatures spike beyond safe operating thresholds.

The Engineering Solution

This 1-row high-performance aluminum radiator and condenser combo directly addresses the Z34's thermal limitations. Featuring an expanded 25 1/8-inch by 18-inch core, this unit drastically increases surface area and coolant capacity. The all-aluminum construction eliminates the failure-prone plastic end tanks, substituting them with fully TIG-welded aluminum for superior structural integrity against high-pressure spikes. By optimizing internal fluid dynamics and increasing thermal transfer efficiency, this setup accelerates heat dissipation. The result is stabilized engine operating temperatures, reduced risk of heat soak, and consistent horsepower delivery from the VQ37VHR even under demanding high-RPM conditions.

Technical Specifications

Fitment 2010-2020 Nissan 370Z (Automatic Transmission)
Engine / Chassis VQ37VHR / Z34
Stock Output 332 hp / 270 lb-ft (Approx)
Part Number 21460-JK90B, 21460-JK20A, 21460-JK90A, 21460-JK20B
Core Dimensions 25 1/8 in. Height x 18 in. Width
Port Sizes 1.31 in. Inlet / 1.38 in. Outlet

Compatibility

  • 2010 370Z 40th Anniversary Edition Automatic Transmission
  • 2010-2020 370Z Base Automatic Transmission
  • 2018-2019 370Z Heritage Edition Automatic Transmission
  • 2015-2017, 2019-2020 370Z Nismo Automatic Transmission
  • 2015-2020 370Z Sport Automatic Transmission
  • 2019-2020 370Z Sport Touring Automatic Transmission
  • 2010-2019 370Z Touring Automatic Transmission
  • 2015-2018 370Z (submodel: Nismo Tech, Sport Tech, Touring Sport) Automatic Transmission

The Nissan Z Caliber

Engineered for the demands of high-revving VQ engines, this cooling upgrade ensures consistent power delivery and proven JDM reliability, preventing heat soak so you can push your chassis to the limit without triggering protective limp modes.


Engine Safety Rating
Difficulty 


Fitment

Make

Nissan

Engine Size

  • 3.7L

Year

  • 2010
  • 2011
  • 2012
  • 2013
  • 2014
  • 2015
  • 2016
  • 2017
  • 2018
  • 2019
  • 2020

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]

Performance Radiator for Nissan 370Z (2010-2020) 3.7L

$249.95