44mm (1 3/4") Blue Silicone Radiator/Intercooler Hose

At 44 mm (1 3/4") the range moves into radiator territory. This is the first of the mid bores that carry real coolant volume, so it turns up on top and bottom hose repairs, factory-size boost piping and machinery cooling. Keep it away from fuel and oil transfer, which the supplier explicitly rules out — this hose is for coolant and charge air.

Key features

• 44 mm (1 3/4") bore
• Complies with SAE J20R1, Class A
• Wall of high performance silicone on 4-ply polyester fabric
• Working range -55°C to 180°C
• Unaffected by ozone and by oil splash in the bay
• SILRH-175 cut to 250 mm or 500 mm; SILRH-175X36 is the metre

Applications

• Radiator hose joins on cars and light trucks
• Factory-size boost piping between intercooler and throttle
• Cooling circuits on machinery and pumps
• Sectional repairs to a failed moulded hose
• Charge air plumbing on small diesels

Compatibility and fitting

• Clamp choice matters on this wall thickness: a smooth band or T-bolt spreads the load, while a perforated band cuts a groove into the silicone. See the hose clamps.
• Ordered on bore, so 44 mm hose fits 44 mm pipe
• Sits between 38 mm and 48 mm in the range if the spigot measures in between
• Fuel and oil work belongs on automotive fuel hose

How do I measure the bore I need?

Measure the outside diameter of the metal spigot or pipe, not the old hose. A tired hose has usually stretched, and ordering from it lands you a size too big.

Can I reuse the old clamps?

Only if they are smooth band or T-bolt and the band is straight. A perforated clamp that has already been on rubber will bite into silicone at the same tension.

The rest of the sizes are in the blue silicone radiator and intercooler hose collection.

Dispatched from our Brisbane warehouse. Australia-wide delivery, or collect from the warehouse once your order is confirmed ready.