Parts for your 2017 Mitsubishi Outlander-Radiator

2017 Mitsubishi Outlander Radiator

Technical sources confirm the 2017 Mitsubishi Outlander is fitted with a conventional liquid-cooling radiator. Mitsubishi Motors’ Outlander Service Manual (2016–2018, Group 14 – Cooling), the 2017 Outlander Owner’s Manual (Maintenance – Engine coolant), and the Mitsubishi Electronic Parts Catalogue (Radiator assembly for GF/GP Outlander, including CVT/V6 variants) all specify an aluminium crossflow radiator with electric fans and a pressurised cap. That makes the radiator a relevant, essential component on this model, including petrol and PHEV variants.

On the 2017 Outlander, the radiator’s job is to shed engine heat by circulating coolant through an aluminium core while twin electric fans and vehicle airflow do the hard yards under the bonnet. Many trims also route transmission fluid through a built-in heat exchanger to keep the CVT or auto in its comfort zone. Healthy coolant and good airflow protect the head gasket, keep emissions in check, and help the air-con condenser up front do its thing more efficiently.

For servicing, it’s smart to follow the vehicle’s scheduled intervals from the owner’s manual. Use Mitsubishi-approved long-life ethylene-glycol coolant, typically mixed 50/50 with demineralised water if not supplied pre-mixed. A proper vacuum fill or careful bleeding helps avoid air locks. When replacing a tired radiator, choose a quality unit that matches OE specs, including correct hose necks, fan shroud mounts, and any integrated trans cooler fittings. It’s good practice to renew the cap, upper and lower hoses, and spring clamps at the same time, then pressure-test the system.

• Look for early signs: rising temp gauge, coolant smell, pink/green/blue residue on tanks, damp undertrays, or fans running constantly.
• Keep the fin stack clean: gently rinse bugs and road grime from the radiator and A/C condenser to restore airflow.
• If towing, tackling long hills, or driving in hot or coastal conditions, inspect more often for corrosion and fin damage.

If the Outlander is a CVT model, any milky or discoloured transmission fluid is a red flag for an internal cooler leak—stop driving and get it checked. PHEV models still use an engine radiator, and may have additional cooling circuits for EV components, so correct coolant type and bleeding are especially important.

Popular questions about 2017 Mitsubishi Outlander radiators

What coolant should be used?
Mitsubishi specifies a long-life, ethylene-glycol coolant that meets the manufacturer’s spec (often supplied as a blue Super Long Life type). Using the correct coolant chemistry protects the alloy radiator and water pump and helps prevent internal corrosion. Stick with a 50/50 mix if not pre-mixed and avoid tap water.

How often should the coolant be changed?
Follow the interval in the owner’s manual for the exact engine/variant. Many long-life coolants run extended intervals, but harsh use (towing, heat, frequent short trips) can justify earlier changes. Coolant test strips or a hydrometer can help check condition between services.

Is it safe to drive with a small radiator leak?
Not recommended. Small leaks can turn into big ones quickly, leading to overheating and expensive engine damage. Stop-leak is only an emergency get-you-home measure, the proper fix is repair or replacement and a system pressure test.