2026-10-08 · 5 min read
Mitsubishi Outlander Rocker Cover Gasket Malaysia
The rocker cover gasket (valve cover gasket) seals the top of the engine and is a common source of oil leaks on higher-mileage Outlanders. The gasket is made of rubber that hardens and shrinks with age and heat cycles. A weeping rocker gasket typically shows up as a thin film of oil around the valve cover perimeter, sometimes burning off on the exhaust manifold with a faint smell. Replacement is a relatively straightforward job — the timing chain and MIVEC components at the top of the engine do not need to be disturbed for this repair.
Outlander Valve Cover Gasket
- Inspect at 80,000 km for oil seepage around valve cover — common on aging 4J11 engines
- Seepage staining the engine bay is cosmetically undesirable but a small leak is not immediately critical — monitor closely
- Replace gasket and clean area thoroughly — use Mitsubishi-spec gasket or equivalent silicone compound