Welcome to Dr. Björn's Auto!
This is the hose we have used for both SVO and coolant for years now, it is diesel fuel line. Use only for low pressure systems. Meets spec SAE-30R-7. Price is per foot.
(NOTE: If you intend to use biodiesel, you must use a more expensive product (Viton). Contact us if you require that, we can special order it for you. We can quote a price when you contact us. )