Collection: Crankcase ventilation valves

Crankcase breather valves – selection and replacement

Crankcase ventilation valves regulate blow-by gas flow into the intake system. The correct version depends on engine design; compare technical references before ordering.

Signs of a possible problem

Rough running, leaks, increased oil consumption or incorrect crankcase pressure require diagnosis. Other components can cause similar symptoms.

How to choose a breather valve

Check OE number, engine code, diaphragm type, connections and housing. Different variants can be fitted depending on production date and equipment.

Installation

Inspect mountings, seals and related parts. Follow manufacturer service procedures and required tests. See engine parts.