When you’re refreshing the cooling system on your Nissan Skyline R32 GT‑R but don’t require a full ancillary hose overhaul, the Samco Sport TCS37/H Heater Hose Kit is the perfect solution. This focused 4‑piece set replaces only the heater hoses on the firewall — the ones that most commonly fatigue, crack, and leak after decades of heat cycles on the RB26DETT.

Built with Samco Sport’s renowned multi‑layer silicone construction, these hoses deliver significant improvements in durability, heat resistance, and long‑term reliability compared to OE rubber. Whether you’re restoring a factory‑fresh cabin heater circuit or preventing unwanted coolant loss in a performance build, this kit offers a clean, targeted upgrade.

What the TCS37/H kit replaces:

• All four firewall‑mounted heater hoses
• Direct replacements for the OEM rubber heater lines feeding the interior heater core
• Ideal when bypass and auxiliary coolant hoses do not need replacing

These hoses are tucked tightly along the firewall — an area prone to radiant turbo heat — making them one of the first coolant components to degrade with age. Upgrading them early helps safeguard your GT‑R from small leaks that can quickly turn into larger issues.

Enthusiast‑focused benefits:

• High‑temperature, multi‑layer silicone for long‑term reliability
• Far more resistant to cracking, swelling, and softening than OE rubber
• Exact‑fit geometry ensures clean installation with factory clips and clamps
• Ideal for staged cooling system upgrades when a full hose kit isn’t required

Colour options:

• Available in multiple finishes to match the rest of your engine bay hoses
• Includes a Classic Black option for an OE‑style appearance with the durability of silicone

The TCS37/H Heater Hose Kit offers a simple, high‑value upgrade that restores confidence in your RB26’s cooling system without replacing every ancillary coolant line. Perfect for owners modernising their GT‑R one step at a time, or those maintaining a clean, factory‑faithful look.