Forklift Engine Relief Valve 32A36-05011 – S4Q2 S4S S4L S6S

Forklift Engine Relief Valve 32A36-05011: OEM Engine Oil Pressure Relief for Mitsubishi S4Q2 S4S S4L S6S

The 32A36-05011 is an engine oil pressure relief valve specifically designed for Mitsubishi S4Q2, S4S, S4L, and S6S diesel engines commonly found in counterbalance forklifts. This valve regulates engine oil pressure by bypassing excess oil back to the sump when pressure exceeds the spring-calibrated set point — protecting main bearings, connecting rod bearings, and turbocharger oil feeds from overpressure damage during cold starts and high-RPM operation.

As a 100% new OEM-compatible component, this relief valve matches the factory spring rate and seat geometry for proper pressure regulation across the full engine RPM range. Installation requires draining engine oil, removing the old valve from the engine block port, and torquing the replacement to factory specification. A sticking relief valve can cause either low oil pressure (valve stuck open from debris) or excessively high pressure (valve stuck closed from varnish buildup), both of which lead to catastrophic engine bearing failure within hours. Each unit ships in neutral export packaging and is backed by a 6-month warranty. Sea, express, and air shipping options available.

Browse all pressure relief valves. Visit Mitsubishi Heavy Industries for engine specifications.