Stant MO78

Stant / MotoRad MO78 is a crankcase breather cap, used as a valve cover or oil filler breather. It is not a PCV valve; it is a ventilation element that allows the crankcase ventilation system to work with proper airflow.

Application / fitment

Typical applications are classic and older engine ventilation systems where the valve cover or oil filler requires a push-fit breather cap. Select the part by seating diameter, height and mounting style.

• valve covers with a breather cap opening
• crankcase ventilation systems
• push-fit installation
• applications depending on hole diameter and valve cover style

Before installation, check the valve cover opening diameter and cap seating stability. A loose breather cap can cause oil seepage or allow dirt to enter the engine ventilation system.

Technical information

• type: crankcase breather cap
• shell diameter: approx. 2.30” / approx. 58.42 mm
• height: approx. 2.50” / approx. 63.50 mm
• material: metal
• mounting style: push-fit
• finish: gold