Espar Airtronic D2

Black rubber fuel hose with a 3.5mm ID., sold by the foot.

Black rubber fuel hose 5mm ID sold by the foot.

Black Plastic Fuel Line 2mm, sold by the meter.  Used on D2 & B/D4 heaters on the inlet side of the Fuel metering Pump (Fuel tank to Pump).

Fuel line 1.5mm ID. This 1.5mm ID fuel line is used on D2 & B/D4 heaters on the outlet side of the Fuel Metering

Pump (Fuel pump to Heater).