New silicone thermostat by-pass hose, Mazda MX5 & Eunos Roadster 1.6 & 1.8 mk1 1989-98.
This is the small hose that comes out of the left hand side of the thermostat housing and goes to the water pump inlet on the front left (exhaust manifold) side of the engine.
Silicone hose, far exceeds OEM spec.
NM00370.
