Parts for your 2025 Mitsubishi Eclipse cross-Sump plug washers

2025 Mitsubishi Eclipse Cross sump plug washers

Yes — the 2025 Mitsubishi Eclipse Cross is fitted with a sump plug washer. This is confirmed in Mitsubishi’s Eclipse Cross Workshop Manual (GK/GL series, Group 13A – Engine Lubrication), which specifies replacing the drain plug gasket at each oil change, and in the Mitsubishi ASA Electronic Parts Catalogue that lists a “GASKET, OIL PAN DRAIN PLUG” (commonly MD050317, 14 mm aluminium crush type) for GK/GL Eclipse Cross variants, including the 1.5L turbo-petrol (4B40) and markets that carry a 2.2 diesel. Mitsubishi dealer parts catalogues for MY25 carry the same requirement.

The sump plug washer (often called a crush washer) is a small aluminium ring that sits between the sump plug and the sump. When the plug is tightened, the washer deforms slightly to create a reliable oil-tight seal. That soft metal “crush” is by design — it’s what prevents weeping and drips once the engine’s hot and oil is under pressure and splash.

Because it’s a single‑use seal, Mitsubishi’s service literature calls for fitting a new washer every time the oil is changed. Reusing the old one can lead to tiny leaks, dust build-up around the plug, or the need to overtighten the plug — none of which is great for the sump threads or the driveway. The good news is they’re inexpensive, easy to replace, and they help keep the Eclipse Cross tidy and leak‑free.

For servicing the 2025 Eclipse Cross, the routine is simple: drain the oil, clean the sump face and plug, fit a fresh washer, and refit the plug tightened to the workshop manual’s torque spec. A magnetic aftermarket plug is fine too, but it still needs the correct crush washer. If in doubt on sizing or part numbers, a quick VIN check at a Mitsubishi dealer parts counter will confirm the right washer for that specific build and market.

• Replace the sump plug washer at every oil change or any time the plug is removed.
• Watch for faint oil dampness around the plug — a classic sign an old washer has flattened out.
• Don’t add sealants or PTFE tape, the crush washer is the designed seal.
• Use the torque spec from the Eclipse Cross workshop manual to avoid overtightening.

Technical sources referenced: Mitsubishi Eclipse Cross Workshop Manual (GK/GL, Group 13A – Engine Lubrication) and Mitsubishi ASA Electronic Parts Catalogue listing the oil pan drain plug gasket (e.g., MD050317) for Eclipse Cross GK/GL, carried into MY25.

FAQs

Does the 2025 Mitsubishi Eclipse Cross have a sump plug washer?
It does. Mitsubishi’s workshop manual calls for replacing the drain plug gasket at each oil change, and the ASA parts catalogue lists a dedicated oil drain plug gasket for GK/GL Eclipse Cross models, which carry through to MY25.

How often should the sump plug washer be replaced on a 2025 Eclipse Cross?
Every oil change. The washer is a one‑time crush seal, so it should be renewed whenever the plug is removed to keep the sump leak‑free.

What size or part number is the Eclipse Cross sump plug washer?
Commonly an M14 aluminium crush washer (often referenced as MD050317 in Mitsubishi catalogues). Always verify against the VIN, as engine and market differences can change the exact washer spec.