Parts for your 2015 Mitsubishi Asx-Radiator hose

2015 Mitsubishi ASX radiator hose — fitted, important, and worth checking

Radiator hoses are absolutely used on the 2015 Mitsubishi ASX. This is confirmed by Mitsubishi Motors’ ASX/RVR/Outlander Sport service manual (GF/GA platform, Cooling System group), the Mitsubishi ASA electronic parts catalogue, and aftermarket catalogues from Gates Australia and Dayco New Zealand, all of which list upper and lower radiator hoses for 2015 ASX engines. So yes — the radiator hose is relevant and factory-fitted on this model.

On a 2015 ASX, the upper and lower radiator hoses move coolant between the engine and radiator, helping the thermostat and water pump keep the engine in its sweet spot for temperature. They also absorb engine movement and hold system pressure, so the cooling system can do its job on hot summer runs and cold morning commutes.

As part of regular servicing, the radiator hoses deserve a quick look each time the bonnet’s up. A sensible approach is visual and squeeze checks every 10,000–15,000 km, or at least once a year. Many workshops recommend replacing hoses around the 5–7 year mark (or sooner if they show wear), especially if the vehicle tows, sees lots of short trips, or lives in hotter climates.

• What to watch for: soft spots, cracks, glazing, swelling, oil contamination, bulges near the ends, and white or coloured crust from dried coolant. Sweet coolant smell, rising temps, or dampness around hose joints are all red flags.
• Best practice: if one main hose is tired, replace both upper and lower together, plus the clamps. It’s also smart to align hose replacement with a coolant service, radiator change, or water pump/thermostat job.

When replacing, let the ASX cool completely, relieve pressure carefully, and drain the coolant appropriately. Fit quality OEM-spec EPDM hoses, position clamps correctly (spring clamps fully seated, worm-drive clamps snug but not crushing), then refill with Mitsubishi-approved coolant meeting the spec in the owner’s manual. Use the correct mix if using concentrate, bleed the system of air, and recheck for leaks. After a couple of heat cycles, inspect clamp tension and coolant level again. Avoid mixing coolant types, and dispose of used coolant safely — it’s toxic to pets and the environment.

Look after the hoses and they’ll quietly protect the head gasket, keep the heater working, and help the ASX run cool and happy across Aussie and Kiwi roads.

Popular questions about 2015 Mitsubishi ASX radiator hoses

How often should the radiator hoses be replaced on a 2015 ASX?
There’s no single expiry date, but a 5–7 year window is common guidance if condition is unknown. Inspect at every service, replace immediately if there’s swelling, softness, cracks, leaks, or bulges. In hotter regions or with towing, expect earlier replacement.

Which coolant should be used after a hose change?
Use Mitsubishi-approved Long Life or Super Long Life coolant that meets the specification in the owner’s manual. If using concentrate, mix to the recommended ratio with demineralised water. Don’t mix different coolant chemistries.

Is it safe to drive with a swollen or leaking radiator hose?
No. A swollen or leaking hose can burst without warning, causing rapid overheating and possible engine damage. If a hose looks suspect, it’s best to park the car and arrange replacement before driving further.