Radiator Coolant Silicone Hose Kit for Nissan 370Z Z34 & Infiniti G37 (2009-2012) 3.7L

Reinforced Radiator Coolant Silicone Hose Kit for 2009 - 2012 Nissan, Infiniti 370Z, G37 (VQ37VHR / Z34 & V36)

Designed for high-temperature and high-boost applications, this silicone coolant hose kit replaces standard OEM rubber hoses to prevent cooling system failures under sustained loads.

The Stock 370Z, G37 Cooling System Vulnerabilities

The factory EPDM rubber coolant hoses on the VQ37VHR engine deteriorate over time due to the high under-hood temperatures characteristic of the Z34 and V36 chassis. Repeated thermal cycling causes standard factory rubber to harden, become brittle, and eventually crack. During aggressive driving, track days, or in forced-induction builds, these limitations become a serious mechanical liability. Expanding beyond their structural limits increases the risk of a blown hose, sudden pressure loss, and catastrophic engine overheating that threatens the integrity of the aluminum block.

The Engineering Solution

This upgraded coolant hose kit uses premium-grade silicone reinforced with 3-ply nylon, achieving a full 4.5mm wall thickness. Unlike standard rubber, silicone maintains flexibility and structural integrity across extreme thermal variations, specifically engineered for operating environments ranging from -65°F up to 500°F. The heavy-duty 3-ply nylon reinforcement drastically increases burst resistance, supporting an 85 PSI continuous working pressure and a 245 PSI peak burst pressure. This prevents wall ballooning under high stress and ensures consistent coolant flow dynamics. The kit includes properly sized clamps for a direct, drop-in installation, permanently resolving OEM hose vulnerabilities.

Technical Specifications

Compatibility

• 2009 - 2012 Nissan 370Z Z34 (3.7L VQ37VHR)
• 2009 - 2012 Infiniti G37 V36 (3.7L VQ37VHR)

The VQ37VHR Reliability Standard

Upgrading to reinforced silicone is an essential preventative measure for high-revving JDM platforms, ensuring stable engine temperatures and reliable cooling performance during spirited driving or boosted builds without the risk of unexpected pressure drops.