Parts for your 2018 Mitsubishi Eclipse cross-Egr valve

Does the 2018 Mitsubishi Eclipse Cross have an EGR valve?

Short answer for Australia and New Zealand: no, the 2018 Eclipse Cross as sold locally (1.5L turbo petrol, engine code 4B40, model code GK1W) is not fitted with an external EGR valve. This is supported by the Mitsubishi Motors Eclipse Cross (GK) 2018MY Service Manual — Engine (4B40) and Emission Control sections, which list no EGR valve or cooler on the petrol engine, the Mitsubishi ASA Electronic Parts Catalogue (EPC) for GK1W/4B40, which shows no EGR assemblies, and Mitsubishi technical training material for the 4B40 engine describing MIVEC cam phasing, stoichiometric combustion and a three‑way catalytic converter without referencing external EGR. Note that some overseas diesel variants (e.g., GK9W with the 4N1x/2.2 DI‑D) do use an EGR valve and cooler per their respective workshop manuals and EPC listings.

Why it’s not used on the local 1.5T petrol: the 4B40 GDI turbo runs a stoichiometric air‑fuel ratio with a three‑way cat to handle NOx, CO and HC. It also uses MIVEC variable valve timing that provides internal exhaust gas recirculation via valve overlap when needed, helping manage combustion temperatures and efficiency without an external EGR circuit. That setup meets ADR 79/04 (Euro 5/6 aligned) emissions and keeps the hardware simpler, lighter and more reliable. External EGR can be brilliant on diesels for knocking NOx down, but on a small modern petrol turbo like this it adds complexity with limited gain, can slow catalyst light‑off when cold, and isn’t required to meet the standards.

What that means for servicing the 2018 Eclipse Cross petrol in Aus/NZ:

• No EGR valve to clean, test or replace as part of routine maintenance.
• If you’re chasing “EGR‑like” symptoms (rough idle, hesitation, pinging), look to common petrol GDI items: intake valve carbon build‑up, PCV system, boost/charge leaks, dirty throttle body, or outdated ECU calibration.
• Stick to quality fuel, regular oil changes, and occasional intake/throttle cleaning to keep combustion tidy. A spirited highway run now and then helps the cat stay healthy.
• Got a grey‑import diesel Eclipse Cross? Different story — those typically have an EGR valve and cooler that can carbon up and need periodic inspection and cleaning.

Technical sources referenced: Mitsubishi Motors Eclipse Cross (GK) 2018MY Service Manual — Engine (4B40) and Emission Control sections, Mitsubishi ASA Electronic Parts Catalogue for GK1W (4B40) and GK9W diesel, Mitsubishi Motors 4B40 New Model/Technical Training materials describing MIVEC, stoichiometric GDI, and three‑way catalyst control.

Popular questions

Does my 2018 Eclipse Cross in Australia or New Zealand have an EGR valve?

No. The locally delivered 1.5L turbo petrol (4B40) doesn’t have an external EGR valve or cooler. Emissions are handled by internal EGR via MIVEC valve timing and a three‑way catalytic converter, as laid out in Mitsubishi’s service and training literature for the 4B40.

How can I tell if a grey‑import diesel Eclipse Cross has an EGR valve?

Diesel variants generally have an EGR valve and cooler mounted off the exhaust side with coolant and vacuum/electrical connections. Check the build plate for engine code (e.g., 4N1x/2.2 DI‑D) and consult the diesel section of the Eclipse Cross workshop manual or EPC for the exact layout.

What symptoms might feel like a bad EGR on the petrol model?

On the petrol 4B40, EGR‑type symptoms are usually from something else: intake valve deposits (common on GDI), a dirty throttle body, boost leaks, or old plugs. If it’s idling rough or hesitating, start with those checks and scan for fault codes before swapping parts.