Parts for your 2012 Mitsubishi Outlander-Head gasket

2012 Mitsubishi Outlander head gasket: what it does and when to tackle it

Based on technical references including the 2012 Mitsubishi Outlander Factory Service Manual (covering 4B12 2.4‑litre and 6B31 3.0‑litre petrol engines), the Mitsubishi 4B1/6B3 engine workshop manuals, and the Mitsubishi ASA electronic parts catalogue, the 2012 Outlander is fitted with a cylinder head gasket. These sources specify a multi‑layer steel (MLS) head gasket installed between the cylinder head and engine block on all primary Outlander powertrains of that year, including markets with the 2.2‑litre turbo‑diesel.

On the 2012 Outlander, the head gasket’s job is to keep the high‑pressure combustion gases sealed inside the cylinders while also separating engine oil and coolant passages. The MLS design used by Mitsubishi gives strong clamping and thermal stability, important for daily driving, towing and long Kiwi and Aussie road trips alike. Whether it’s the 2.4 petrol four‑cylinder, the 3.0 V6, or the 2.2 diesel, the gasket is a quiet workhorse that maintains compression, prevents cross‑contamination of fluids, and helps the engine run efficiently and cleanly.

There’s no scheduled replacement interval for a head gasket