Upgrade the cooling backbone of your Nissan 370Z Z34 or Skyline (C)V36 370GT with the Samco Sport Silicone TCS430/C Radiator Hose Kit — a premium silicone replacement for the VQ37VHR’s upper and lower radiator hoses. Whether your GT‑R is a cherished classic or a track‑day regular, these hoses bring the reliability, durability, and performance that only motorsport‑grade silicone can deliver.

For decades, Samco Sport has earned its reputation as the global leader in high‑performance silicone hose technology. Their multi‑layer reinforced construction resists swelling, hardening, and heat‑soak far beyond what factory rubber can handle — giving your RB26 cooling system the stable pressure and consistent flow it needs when temperatures rise.

What the TCS430/C radiator kit replaces:

• Upper radiator hose (engine to radiator)
• Lower radiator hose (radiator to water pump inlet)
• Direct OE‑geometry replacements for a clean, precise fit

These hoses see heavy thermal cycling and pressure fluctuation, making them some of the first rubber components to age, crack, soften, or leak. Replacing them with silicone is one of the most effective and preventative cooling upgrades for any VQ37‑powered 370Z or (C)V36 — preserving both daily drivability and high‑load confidence.

Enthusiast‑benefit highlights:

• Motorsport‑grade, multi‑layer silicone construction for maximum heat resistance
• Improved pressure stability for better cooling efficiency under boost
• Long‑term resilience against cracking, collapsing, and internal deterioration
• Ideal for restorations, elevated power levels, or spirited driving
• Exact OE routing ensures straightforward installation with factory hardware

Colour options:

• Available in multiple colour variations to suit your engine bay aesthetic
• Includes a Classic Black option for those who prefer an OE rubber appearance with the benefits of silicone

Pairing the TCS430/C Radiator Hose Kit with the Samco Sport ancillary water hose set brings your VQ37VHR’s entire cooling network up to modern standards — a simple, high‑impact upgrade that keeps your Nissan 370Z Z34 or Skyline (C)V36 370GT running cool, clean, and ready for whatever you throw at it.