Radiator Coolant Silicone Hose Kit for Nissan 350Z & Infiniti G35 (2003-2007) 3.5L

High-Pressure Radiator Coolant Silicone Hose Kit for 2003-2007 Nissan 350Z & Infiniti G35 (VQ35DE / Z33, V35)

Direct replacement 3-ply silicone hose kit engineered to eliminate the failure-prone factory rubber hoses, preventing catastrophic coolant loss and overheating under high-stress driving conditions.

The Stock VQ35DE Coolant Hose Vulnerability

Factory EPDM rubber coolant hoses on the Z33 and V35 chassis degrade rapidly from continuous heat cycling and exposure to engine bay contaminants. Over time, the stock rubber dries out, swells, and develops micro-cracks at the clamping points. When pushed during track days, drifting sessions, or aggressive canyon carving, the elevated coolant temperatures and increased system pressure often lead to sudden blowouts. A ruptured upper or lower radiator hose on the VQ35DE immediately introduces air pockets, resulting in severe heat soak, blown head gaskets, or warped aluminum cylinder heads.

The Silicone Engineering Solution

This upgraded radiator hose kit is constructed from premium 4.5mm thick, 3-ply reinforced silicone, replacing the restrictive and fragile OEM lines. Designed specifically for the VQ35DE cooling system, these hoses withstand extreme temperature variances ranging from -65°F up to 500°F. The multi-layer silicone reinforcement ensures maximum structural integrity, handling working pressures up to 0.9Mpa and boasting a bursting pressure of 245 PSI. By eliminating volumetric expansion under pressure, coolant flow remains consistent, optimizing thermal management. The kit features a precise +/-0.5mm size tolerance for a direct-fit installation, ensuring leak-free performance and superior heat dissipation without modifying the factory radiator necks or thermostat housing.

Technical Specifications

Compatibility

• 2003-2007 Infiniti G35 (All Models, VQ35DE)
• 2003-2006 Nissan 350Z (All Models, VQ35DE)
• Note: Excludes models equipped with the VQ35HR engine.

The Nissan & Infiniti Tuning Standard

Built for the rigors of VQ performance, this silicone hose kit guarantees the reliability and thermal stability demanded by the JDM tuner community, ensuring your cooling system holds pressure when you need the power most.