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Crankcase Breathers

Find crankcase breathers and oil separators for the engine and ventilation system fitted to your truck. Compare Cummins X15, Detroit DD13/DD15, Volvo D11/D13, Mack MP7/MP8 and International reference families.

Choose by OE number and ventilation design

Match the installed assembly number, engine serial number and open (OCV) or closed (CCV) ventilation layout. Early and later breathers can share an engine name while using different housings.

5417366 / 5679573 later-style breather · 4974922 early-design breather · Ask for fitment help