Three 1 metre products: standard silicone in 6mm to 152mm in blue, black and red; Fuel & Oil fluorolined silicone in 6mm to 63mm in black; and Classic Wrapped fluorolined silicone in 13mm to 51mm in black with a period cloth-wrapped finish.

Standard silicone to SAE J20 R3 for coolant, water and air. Fuel & Oil to SAE J30 R6 for petrol, diesel, oil and fuel vapour, including breather lines carrying oil mist. Classic Wrapped where the hose is visible on a classic and a glossy modern finish would look wrong.

No - it swells and breaks down in contact with petrol, diesel and oil. The failure is internal and gradual, so it does not announce itself. Use the Fuel & Oil version, which has a fluorosilicone inner liner and handles E5 and E10 pump fuel.

Order by internal diameter, matched to the outside diameter of the pipe stub it slides over. Measure the pipe with vernier callipers, not the old hose - hose stretches in service and reads large. If the two ends are different sizes, you need a reducer.

Only gently. Straight hose has a minimum bend radius and the larger the bore the larger it is. Forcing it tighter kinks the bore, restricts flow and creates a stress point. For a real change of direction use a moulded elbow - we stock 45, 90, 135 and 180 degrees.

Use a sharp blade or a dedicated hose cutter and cut square in one decisive stroke. Never use a hacksaw - it drags the reinforcement plies and leaves a frayed edge that will not seal. If you have several cuts to make, a proper cutter pays for itself.