Parts for your 2017 Mitsubishi Asx-Radiator hose

2017 Mitsubishi ASX Radiator Hose — Purpose, Care, and When to Replace

Radiator hoses are absolutely used and relevant on the 2017 Mitsubishi ASX. Technical references such as the Mitsubishi Motors Workshop Manual (Cooling System, Group 14) for the GA2W/CF series, the Mitsubishi ASA electronic parts catalogue, and aftermarket application data from brands like Gates and Dayco all list upper and lower radiator hoses for both the 2.0 petrol and 2.2 diesel ASX models. That confirms the ASX runs a conventional liquid-cooling system with dedicated hoses between the engine and radiator.

On this model, the radiator hoses move coolant from the engine to the radiator and back again, keeping temperatures in the sweet spot. Under the bonnet they cop heat, vibration, and pressure, so quality hoses and clamps are vital. If a hose gives out, the ASX can overheat quickly, risking head gasket damage and a very expensive day.

As part of routine servicing, the radiator hoses on a 2017 ASX should be checked every service interval (typically 10,000–15,000 km or 12 months). Look for soft spots, swelling near the ends, cracking, oil contamination, or crusty residue from minor leaks. In Aussie and Kiwi conditions with big temperature swings and plenty of stop–start driving, preventative replacement around 6–8 years or 100,000–150,000 km is a smart move, even if they still “look okay”.

• Replace at the first sign of bulging, splits, seepage, or if a hose feels spongy compared with new.
• Swap upper and lower hoses as a pair, and consider the bypass/heater hoses if access is easy.
• Use OEM-spec EPDM hoses and quality constant-tension (spring) clamps to maintain seal as temperatures change.

When changing hoses, only work on a cold engine. Drain and capture coolant, fit the new hoses without twisting, position clamps behind the bead on the necks, and refill with Mitsubishi Genuine Super Long Life Coolant (blue) premix or an equivalent silicate-free, phosphate OAT coolant meeting the correct spec. Don’t mix coolant types or colours. Bleed air properly (heater on hot, squeeze the hoses, and top up as needed), then pressure-test and check for leaks. A quick recheck after a few heat cycles helps catch any weeps early.

A little attention to the ASX’s radiator hoses keeps the cooling system honest, protects the alloy head, and saves headaches on long Kiwi and Aussie road trips.

Popular questions about 2017 Mitsubishi ASX radiator hoses

How often should radiator hoses be replaced on a 2017 ASX?
They should be inspected at every service and replaced immediately if there’s softening, swelling, cracking, or leakage. As preventative maintenance in local conditions, many workshops recommend replacement around 6–8 years or 100,000–150,000 km, whichever comes first.

What coolant should be used after replacing a hose?
Use Mitsubishi Genuine Super Long Life Coolant (blue) premix, or an equivalent silicate-free, phosphate OAT coolant that meets the correct Mitsubishi/JIS spec. Avoid mixing different coolant chemistries or colours to prevent gel and corrosion issues.

Is it safe to drive with a small radiator hose leak?
Not really. Even a small leak can turn into a split under pressure, causing sudden overheating. If a hose is weeping or damaged, it’s best to stop, top up only if safe, and arrange a proper repair rather than risking engine damage.